CN208521482U

CN208521482U - A kind of rural power grids distribution business work skill operation training cabinet

Info

Publication number: CN208521482U
Application number: CN201820310686.8U
Authority: CN
Inventors: 赵军; 黄桂斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-06
Filing date: 2018-03-06
Publication date: 2019-02-19
Anticipated expiration: 2028-03-06

Abstract

The utility model belongs to electrical technology field.A kind of rural power grids distribution business work skill operation training cabinet, including cabinet body, the bottom surface of cabinet body are equipped with 3 or more traveling wheels；It is characterized by: the front of cabinet body is equipped with the first tool drawer, the second tool drawer, the first Tool Cabinet, the second Tool Cabinet；Installation connection circuit, the direct current method for stopping power transmission operating device, dedicated transformer terminal and electric energy metering device equipped with instrument and meter cabinet, distribution transformer behind cabinet body judge the positive and negative control circuit installation circuit of principle of polarity connection circuit, the motor of current transformer, the single-phase steering controling circuit installation circuit of two places operation motor, the single-phase steering controling circuit installation circuit of the motor with overload protection；Reversible crawl service meter control circuit installs circuit.Power grid enterprises' production station skill operation specification and base's practitioner's real work can be effectively combined, to solve the difficulty of basic-level power supply bureaus business skills training, improves equipment teaching practicability.

Description

A kind of rural power grids distribution business work skill operation training cabinet

Technical field

The utility model belongs to electrical technology field, is related to power grid enterprises, rural area, enterprise's electrician's business skills training, especially It is a kind of rural power grids distribution business work skill operation training cabinet.

Background technique

The competition of modern enterprise is the competition of people after all.The talent is emerging, then cause is emerging；Of strong troops, then enterprise is strong.Electricity Enterprise is netted as technology-intensive type and talent's intensive enterprise, personnel quality directly determines the quality of enterprise, affects enterprise Reform and development.There is no high-quality talent team's support, the development of enterprise is as water without a source, it is difficult to for after.Reinforce troop to build It is that enterprise development is very important " this investment of people " if promoting peopleware, is the fundamental way for improving enterprise development ability. Currently, as the acceleration of power system reform and energy revolution promotes, the quickening of smart grid pace of construction, newly established sale of electricity Company constantly pours in power sales, will increasingly improve to power business demand for talent intensity, to multi-disciplinary, can take on a variety of properties The demand of the inter-disciplinary talent of work is more and more obvious.Power grid enterprises only build skills training in province, city-level Utilities Electric Co. at present Training base, especially base-level countryside power supply station of power supply company at county level is due to fund, place and equipment and other reasons, base's working Personnel want to pursue one's vocational study, and wanting to sharpen one's skills but cannot achieve.Tissue base practitioner focuses on province, company of city training base takes off Training is produced, grass-roots unit's routine work, but also a large amount of human and material resources of waste had not only been influenced, and cannot achieve learning by doing, does middle religion, The business skill that base practitioner can not be improved is horizontal.Strong smart grid development is maked rapid progress, and is mentioned to strengthening its contingent New requirements at the higher level are gone out, there is an urgent need to cultivate one to adapt to the outstanding personnel team that reform needs, meets demand for development 5.

Summary of the invention

The purpose of this utility model is to provide a kind of rural power grids distribution business work skill operation training cabinets, can effectively combine electricity Enterprise's production station skill operation specification and base's practitioner's real work are netted, to solve the training of basic-level power supply bureaus business skill The difficulty of instruction improves equipment teaching practicability.

The purpose of this utility model is achieved through the following technical solutions: a kind of rural power grids distribution business work skill operation is real Cabinet, including cabinet body are instructed, the bottom surface of cabinet body is equipped with 3 or more traveling wheels；It is characterized by: the front of cabinet body is equipped with the first tool Drawer, the second tool drawer, the first Tool Cabinet, the second Tool Cabinet；

Instrument and meter cabinet is equipped with behind cabinet body, distribution transformer stops power transmission operating device, dedicated transformer terminal and electricity Installation connection circuit, the direct current method of energy metering device judge that principle of polarity connection circuit, the motor of current transformer are just countercharged It is single-phase that circuit processed installs circuit, the single-phase steering controling circuit installation circuit of two places operation motor, the motor with overload protection Steering controling circuit installs circuit；Reversible crawl service meter control circuit installation circuit and common transformer concentrator peace Dress, debug circuit, single-phase, three-phase intelligent table installation, commissioning device and three-phase socket.

The left side of the cabinet body is equipped with distribution transformer insulation measurement equipment, distribution transformer direct current resistance m easurem ent Equipment uses earth resistance tester measuring transformer ground resistance, distribution transformer tap switch adjustment equipment, and operation Platform.

The right side of the cabinet body is equipped with grounding copper bar, conducting wire in the fixed equipment of pin insulator inverted draw cut, conducting wire in needle The fixed equipment of formula insulator neck slot, NUT wire clamp production bracing wire, wedge type clamp production bracing wire, 1-10KV power cable insulation electricity Resistance measuring device, 1-10KV cable hot shrinkage terminal making apparatus, hydraulic method conducting wire docking subsequent operations equipment, forcipressure are led Line docks subsequent operations equipment.

The right side of the cabinet body, which is equipped with, judges the correctness of three-phase and four-line electric energy metering device wiring, with short with disconnected platen press Connection judges the correctness of three-phase and four-line electric energy metering device wiring, judges three-phase and four-line electric energy metering device with voltage cross method The correctness equipment of wiring.

The beneficial effects of the utility model are: this skill operation training cabinet is practical by power grid enterprises' rural power grids distribution, business work Work and verification of professional technical ability effectively combine, and on the one hand solve the difficulty of basic-level power supply bureaus business skills training, another party Face improves the practicability of equipment teaching, training, solves base practitioner verification of professional technical ability practical operation training.This reality It include that training project is more with novel training cabinet, flexibly and easily, the business skill for not only having improved base practitioner is horizontal, but also improves Basic-level power supply bureaus good service ability, improves base of power grid enterprises practitioner's total quality.

Detailed description of the invention

Fig. 1 is the main view (face a view) of the utility model.

Fig. 2 is the rearview (face b view) of the utility model.

Fig. 3 is the left side view (face c view) of the utility model.

Fig. 4 is the right side view (face d view) of the utility model.

Fig. 5 is the utility model three-phase and four-line active electric energy meter through TA access type voltage, electric current separated time connection wiring diagram.

Fig. 6 is the principle of polarity wiring diagram that the utility model direct current method judges current transformer.

Fig. 7 is the positive and negative control circuit installation of the utility model motor, motor forward/backward rotation control circuit key wiring diagram.

Fig. 8 is the positive and negative control circuit installation of the utility model motor, motor forward/backward rotation control circuit element arrangements ginseng Examine figure.

Fig. 9 is the single-phase steering controling circuit installation of the utility model two places operation motor, and it is single-phase that two places operate motor Steering controling circuit key wiring diagram.

Figure 10 is the single-phase steering controling circuit installation of the utility model two places operation motor, and it is single-phase that two places operate motor Steering controling circuit element arrangements are with reference to figure.

Figure 11 is the single-phase steering controling circuit installation of motor of the utility model with overload protection, the electricity with overload protection The single-phase steering controling circuit key wiring diagram of motivation.

Figure 12 is the single-phase steering controling circuit installation of motor of the utility model with overload protection, the electricity with overload protection The single-phase steering controling circuit element arrangements of motivation are with reference to figure.

Figure 13 is the reversible crawl service meter control circuit installation of the utility model, reversible crawl service meter control Circuit theory wiring diagram.

Figure 14 is the reversible crawl service meter control circuit installation of the utility model, reversible crawl service meter control Circuit element is arranged with reference to figure.

Figure 15 is the utility model common transformer concentrator installation elementary diagram.

Figure 16 is the utility model distribution transformer insulation measurement, distribution transformer Insulation test wiring diagram --- High-low test wiring diagram (lower is top view).

Figure 17 is the utility model distribution transformer insulation measurement, distribution transformer Insulation test wiring diagram --- around Group path testing wiring diagram (lower is top view).

Figure 18 is the utility model distribution transformer insulation measurement, distribution transformer Insulation test wiring diagram --- High-low and ground test wiring diagram (lower is top view).

Figure 19 is the utility model distribution transformer insulation measurement, distribution transformer Insulation test wiring diagram --- Low -20 ground test wiring diagram (lower is top view).

Figure 20 is the utility model distribution transformer direct current resistance m easurem ent-transformer phase resistance wiring diagram.

Figure 21 is the utility model distribution transformer direct current resistance m easurem ent-transformer wire resistor wiring figure.

Figure 22 is the utility model using earth resistance tester measuring transformer ground resistance, and four terminal ground resistances are surveyed Try instrument wiring diagram.

Figure 23 is the utility model using earth resistance tester measuring transformer ground resistance, and three terminal ground resistances are surveyed Try instrument wiring diagram.

Figure 24 is fixation of the utility model conducting wire in pin insulator inverted draw cut, insulator top hypodesmus step exploded pictorial Figure.

Figure 25 is fixation of the utility model conducting wire in pin insulator inverted draw cut, the shape after the binding of inverted draw cut " single cross " method Figure.

Figure 26 is fixation of the utility model conducting wire in pin insulator neck slot, insulator neck hypodesmus step exploded pictorial Figure.

Figure 27 is fixation of the utility model conducting wire in pin insulator neck slot, the shape after the binding of neck slot " single cross " method Figure.

Figure 28 is the utility model NUT wire clamp production bracing wire figure.

Figure 29 is the utility model wedge type clamp production bracing wire figure.

Figure 30 is the utility model 1-10KV power cable insulation resistance measurement, tests the wiring of single-core cable insulation resistance Figure.

Figure 31 is the utility model 1-10KV power cable insulation resistance measurement, tests the wiring of multicore cable insulation resistance Figure.

Figure 32 is the utility model 1-10KV power cable insulation resistance measurement, U relatively insulation resistance wiring diagram.

Figure 33 is the utility model 1-10KV power cable insulation resistance measurement, and test multicore cable U phase insulation resistance connects Line chart.

Figure 34 is the utility model 1-10KV power cable insulation resistance measurement, and test multicore cable phase insulation resistance connects Line chart.

Figure 35 is the utility model 1-10KV power cable insulation resistance measurement, test cable inner sheath insulation resistance wiring Figure.

Figure 36 is the utility model 1-10KV cable hot shrinkage terminal production figure.

Figure 37 is the utility model hydraulic method conducting wire docking subsequent operations figure；(a) the hydraulic connecting of aluminum stranded conductor；(b) copper core aluminium Twisted wire connects.

Figure 38 is the utility model forcipressure conducting wire docking subsequent operations figure.

Figure 39 is the utility model direct-flow double bridge basic circuit diagram.

In figure: 1- the first tool drawer, 2- the second tool drawer, the first Tool Cabinet of 3-, the second Tool Cabinet of 4-, 5- instrument and meter Cabinet, 6- distribution transformer stop power transmission operating device, the installation connection circuit of 7- dedicated transformer terminal and electric energy metering device, 8- Direct current method judges the principle of polarity connection circuit of current transformer, and the positive and negative control circuit of 9- motor installs circuit, the reversible point of 10- Dynamic service meter control circuit installation circuit and the installation of common transformer concentrator, debug circuit, 11- is single-phase, three-phase intelligence The installation of energy table, commissioning device, 12- three-phase socket, 13- distribution transformer insulation measurement equipment, 14- distribution transformer direct current Resistivity-measuring devices, using earth resistance tester measuring transformer ground resistance, distribution transformer tap switch adjustment equipment, Station, 15- grounding copper bar, 16- conducting wire is in the fixed equipment of pin insulator inverted draw cut, and 17- conducting wire is in pin insulator neck slot Fixed equipment, 18-NUT wire clamp make bracing wire, 19-1-10KV power cable insulation resistivity-measuring devices, 20- ground lead, 21- earthing pole draws band iron, and 22- brachycephaly, 23- disk line end, 24- neck outside, 25- neck inside, 26- is small to debate, the port 27- Line, 28- central identification line, 29- aluminum pipe, 30- steel core, 31- steel pipe, 32- steel-core-aluminium streakline.

Specific embodiment

The bottom surface of the work skill operation training cabinet as shown in Figure 1, a kind of rural power grids distribution is done business, including cabinet body, cabinet body is equipped with 3 The traveling wheel of (such as 3-4) above；The front (face a) of cabinet body be equipped with the first tool drawer 1, the second tool drawer 2, the first Tool Cabinet 3, Second Tool Cabinet 4 (Tool Cabinet puts real training managing security tools and instruments and operation Work tool)；

As shown in Fig. 2, (face b) is equipped with instrument and meter cabinet 5 (placing test instrument and meter), distribution transformer behind cabinet body Device stops installation connection circuit (see attached drawing 5) 7, the direct current method of power transmission operating device 6, dedicated transformer terminal and electric energy metering device Judge that principle of polarity connection circuit 8 (attached drawing 6), the motor of current transformer positive and negative control circuit installation circuit 9 are (attached drawing 7, attached Fig. 8), the single-phase steering controling circuit of two places operation motor installs circuit (attached drawing 9, attached drawing 10), the motor with overload protection Single-phase steering controling circuit installs circuit (attached drawing 11, attached drawing 12)；Reversible crawl service meter control circuit installation circuit is (attached Figure 13, attached drawing 14) and the installation of common transformer concentrator, debug circuit 10 (attached drawing 15), the installation of single-phase, three-phase intelligent table, Commissioning device 11 and three-phase socket 12.

As shown in figure 3, the left side (face c) of cabinet body is equipped with distribution transformer insulation measurement equipment 13 (attached drawing 16, figure 17, Figure 18, Figure 19), distribution transformer direct current resistance m easurem ent equipment (attached drawing 20, Figure 21), measured using earth resistance tester Transformer grounding resistance (attached drawing 22, Figure 23), distribution transformer tap switch adjustment equipment and station 14.

As shown in figure 4, the right side (face d) of cabinet body be equipped with grounding copper bar 15, conducting wire pin insulator inverted draw cut fixation Equipment 16 (attached drawing 24, Figure 25), conducting wire make in the fixed equipment 17 (attached drawing 26, Figure 27) of pin insulator neck slot, NUT wire clamp Bracing wire 18 (attached drawing 28), wedge type clamp make bracing wire (attached drawing 29), 19 (attached drawing of 1-10KV power cable insulation resistivity-measuring devices 30, attached drawing 31, Figure 32, Figure 33, Figure 34, Figure 35), 1-10KV cable hot shrinkage terminal making apparatus (attached drawing 36), hydraulic method Conducting wire docks subsequent operations equipment (attached drawing 37), forcipressure conducting wire docks subsequent operations equipment (attached drawing 38), direct-flow double bridge Schematic circuit (attached drawing 39), the electrification through TA access four line electric energy meter of low voltage three-phase exchange (attached drawing 15), access three-phase four through TA Metering device failure (attached drawing is investigated and prosecuted in the case of the installation of line electronic type multifunctional meter and its auxiliary terminal wiring (attached drawing 15), electrification 15) correctness (attached drawing 15) of three-phase and four-line electric energy metering device wiring, is judged with disconnected platen press, judges three-phase and four-line with the method for short circuit The correctness (attached drawing 15) of electric energy metering device wiring is judging the wiring of three-phase and four-line electric energy metering device just with voltage cross method True property equipment (attached drawing 15).

The utility model includes distribution transformer direct current resistance m easurem ent；Distribution transformer tap switch is adjusted；Distribution transformer Device stops power transmission operation；Distribution transformer insulation measurement；Distribution transformer earthing resistance measurement；Hydraulic method wire-connection；Pincers Platen press wire-connection；Fixation of the conducting wire in pin insulator inverted draw cut；Fixation of the conducting wire in pin insulator neck slot；10KV tension-resistant rod Monolithic insulator replacement operation；1-10KV power cable insulation resistance measurement；1-10KV power cable direct current is than test；1-10KV The production of cable hot shrinkage terminal；Electromotor control circuit installation and debugging；Dedicated transformer terminal and electric energy metering device are existing Field installation, debugging；23 operation items such as site inspection, analysis, processing of common transformer acquisition system failure.

As shown in Figure 5 (the installation connection circuit 7 of dedicated transformer terminal and electric energy metering device):

(1) Work tool, material

(1) Work tool: wire stripper, bolt clipper, electric drill (match 2,12.5mm drill bit), adze-eye hammer, socket wrench, and tape measure is low Pressure electroscope, clamp on amperemeter 1,1, multimeter, 500V insulation resistance meter 1.

(2) material: 3 × 1.5 (6) A three-phase and four-line active electric energy meters 1,150/5 current transformer 3 combine line wiring 1, box, low voltage isolation switch 1, low-voltage circuit breaker 1, low-tension fuse 3, BV-1 × 25mm²Conducting wire is several, and BV-1 × 25mm²Yellow, green, red conducting wire is several, BV-1 × 4mm²Yellow, green, red conducting wire is several, and direction set is several, and nylon cable tie is several, once Property sealing lead is several, fine sandpaper, 21 sets of the bolt of M4 × 10, and 24,5mm gasket, 600mm × 700mm × 1 piece of 20mm plank.

2, operating procedure

(1) primary circuit wiring.According in given current transformer, attaching single electric current no-load voltage ratio requirement, complete wiring, wire length Measurement, conducting wire intercept, core exploitation is connect with production, insulation recovery, core, bundle and remaining line is handled.

(2) the installation wiring of secondary circuit.Secondary circuit refers to Current Transformer Secondary terminal to connection box of electric energy meter terminal Between current loop.In voltage, electric current separated time connection, the voltage circuit including electric energy meter.Wherein current loop conductor cross-section Respectively it is not less than 4mm², other return wire sectional areas are not less than 2.5mm², using the insulated conductor of 500V.

1) electric energy meter is to the wiring between terminal box.Electric energy meter is general to the voltage circuit sectional area of wire between terminal box Not less than 2.5mm²Sub-thread be responsible for core wire, current loop sectional area of wire is typically no less than 4mm²Sub-thread steel core wire.It is installed Operation is divided into wire length measurement and interception, core exploitation, conductor wiring, electric energy meter tail inlet-outlet line terminal connections, terminal box electric energy Five steps of table side outlet terminal wiring.

When wire core is connect with table tail wiring hole, phase point, voltage and current terminal are distinguished, is sequentially ingressed by label, That is ampere wires (or the correspondence label of yellow, green, red three kinds of colors is successively injected in table tail 1 and 3,4 and 6,7 and No. 9 wiring holes Connecting terminal) core, 2,5,8 successively inject voltage conductor (or connecting terminal of corresponding label) line of yellow, green, red three kinds of colors Core, No. 10 are injected black neutral conductor conducting wire (or connecting terminal of corresponding label) core, and are fixed with screw needle pressure type.Every is led Wire core fasten when, first tighten one screw of line end, after tighten inside one screw, tighten two screws uniformly, guarantee to lead Line does not loosen.

2) terminal box is to current transformer current circuit connections.According to DL/T825-2002, " electric energy metering device installation is connect Line rule " regulation, current transformer to the current loop conducting wire between terminal box should be generally not small using single cord sectional area In 4mm².It is mutual with interception, core exploitation, connecting terminal label mark, conductor wiring, electric current that its installation wiring is divided into wire length measurement The wiring of sensor connecting terminal, the outlet terminal wiring of terminal box mutual inductor side, the wiring of terminal box voltage circuit, conducting wire binding eight steps Suddenly.

After peelling off each wire the end of a thread insulating layer, it is inserted in direction set, and according to the number on wiring diagram, each direction is covered It is numbered.

When using voltage, electric current separated time connection, the S2 connecting terminal of three Current Transformer Secondary sides end is with identical Conducting wire is shorted, and is connected on batch meter on ground terminal bolt.When connection conllinear using voltage, electric current, Current Transformer Secondary Side does not allow to be grounded.

When wire core is connect with terminal box wiring hole, phase sequence is distinguished, is sequentially inserted into the input terminal of terminal box.

3) when using voltage, electric current separated time connection, terminal box voltage should take from the power switch of batch meter (cabinet).

As shown in Figure 6 (the principle of polarity connection circuit 8 that direct current method judges current transformer):

One, it constructs

(1) Work tool, material

(1) Work tool: screwdriver, DC ammeter or pointer multimeter, electrician's personality kit.(2) material: monopole is opened Pass, conducting wire, 1.5V battery.(3) equipment: low-voltage current mutual inductor.

(2) safety requirements

(1) range that should be noted that instrument when instrument is used, prevents electric current is excessive from burning out gauge outfit.(2) using has insulation handle Tool, and with good insulating glove, it is necessary to wear caftan work.(3) it should be noted that correct differentiation current transformer one, two when wiring Secondary winding.

(3) operating procedure and requirement

1, operating procedure

(1) wiring diagram is drawn.(2) material is selected, checks meter.(3) circuit is connected.(4) circuit is checked.(5) by general-purpose The change-over switch of table is placed on DC current stroke voltage and blocks.(6) it closes a switch, observes the deflection of multimeter.(7) it turns on the switch, Observe the deflection of multimeter.(8) it draws a conclusion, judges polarity, mark polarity.(9) job note is filled in.

2, operation requires

(1) the graphical symbol regulation in circuit diagram.Shown in connection principle.(2) selection of cell voltage.(3) meter gear Selection.

As Figure 7-8 (the positive and negative control circuit of motor installs circuit 9):

One, it constructs

(1) Work tool, material, equipment

(l) Work tool: multimeter, electrician often use personality kit.

(2) material: conducting wire BV-2.5mm²、BV-4mm², each several rice of BVR type multiply copper core flexible cord, nylon cable tie, band cap It is each several to pad bolt, special pipe (coding casing).

(3) equipment: A.C. contactor 2, electrothermal relay 1,1, button, plug fuse 5, JF5-25/5 terminal Arrange 3 sections, 1 piece of HH-30/20 power switch, 22kW threephase asynchronous l platform.

(2) safety requirements

(l) when each component is installed, it should be noted that whether bottom plate is smooth, if bottom plate is uneven, should be added gasket below component, with Component is damaged when anti-installation.

(2) it should be noted that the proper use of of tool when operating, do not damage tool and component.

(3) when energizing test, operating method should be correct, it is ensured that the safety of the person and equipment.

(4) phenomenon that notes abnormalities when test run or peculiar smell should parking checkings immediately.

(3) construction procedure and requirement

1. construction procedure

(l) preparatory work before installation (select tools, material and component).(2) according to control electrical principle wiring diagram Or element arrangements carry out the installation of electrical component in designated position with reference to figure.(3) line arrangement is carried out by technique requirement.(4) lead to Electric test.

The requirement of 2 techniques

(1) electrical principle wiring diagram is as shown in Figure 7.

(2) conducting wire and element selection are correct, reasonable；Major loop and control loop conductor cross-section should meet load requirement, also It should be distinguish using different colours.The rated current that each element selection should all meet electric appliance huge rock in load requirement major loop is answered It is selected by motor rated current is greater than or equal to, motor rated current can be by finding, to 380V motor in nameplate It can be estimated by 2A/kW, and coil voltage should then be selected by supply voltage used in control circuit.

(3) by element arrangements with reference to figure reasonable Arrangement, installation elements, element is fixed neat, secured, and remains intact, nothing Damage, each element arrangements are with reference to as shown in Figure 8.

(4) press drawing correct wiring, figure is consistent in kind connect, line arrangement is smooth vertical and horizontal, face without intersection, across When major loop and control loop separate, trend is reasonable, neat appearance.

(5) conductor compression jointing fastens, and screw does not press insulating layer, do not hurt core, and core is exposed to be not more than 1mm, Joining Technology matter It is best, clockwise about to the binding of, nylon cable tie, securely, uniformly (80-l00mm-), direction are consistent, terminal plate (terminal block) arrives Button uses multiply copper core flexible cord, contact wiring impulse- free robustness, and same contact is no more than 2 conducting wires, and coding casing is complete, and label is just Really.

(6) melt selection and installation are correct；The rated current of major loop melt should be specified not less than 1.5-2.5 times of motor The rated current of electric current, control loop melt is considered by 2A.It, should be clockwise about to screw crimping is elastic appropriate when fuse is installed. When installing fusion tube, upward, upper cap should screw the side with point, and each section contact is good.

(7) electrothermal relay adjusting is correct, and the action current of electrothermal relay is fixed by 11-1.5 times of control of motor rated current.

(8) wiring of motor and power supply line and the clearing sequence after energization operate correct, specification before being powered.Be powered examination When testing, it should close a floodgate step by step from power supply to load, finally by starting, stop button test run.Behaviour after test run

As shown in figs. 9-10 (two places operate the single-phase steering controling circuit of motor and install circuit):

One, it constructs

(1) Work tool, material, equipment

(1) work device is lain prone: multimeter, electrician's personality kit, Chronograph.

(2) material: conducting wire BV-1.5mm²、BV-2.5mm², each several rice of BVR type multiply copper core flexible cord, nylon binding strap, Band cap pad bolt, special pipe (coding casing) are each several.

(3) equipment: A.C. contactor 1, electrothermal relay 1,1, button, plug fuse 5, HH-30/20 power supply 1 piece of switch, 2 section of JF5-2.5/5 terminal block, 2.2KW threephase asynchronous 1.

(2) safety requirements

(1) when each component is installed, should check whether bottom plate is smooth, if bottom plate is uneven, be added gasket under component, to prevent Component is damaged when installation.(2) it should be noted that the proper use of of Work tool when operating, do not damage Work tool and component.(3) it is powered When test, operating method should be correct, it is ensured that the safety of the person and equipment.(4) it is powered and operably notes abnormalities phenomenon or peculiar smell is answered Parking checking immediately.

(3) construction procedure and requirement

1, construction procedure

(1) by given drawing elder generation Work tool and component.(2) in specified position mounting related components.(3) it is wanted by technique Seek carry out line arrangement.(4) energizing test.

2, technique requirement

(1) shown in electrical principle wiring diagram.

(2) conducting wire and element selection are correct, reasonable；Major loop and control loop conductor cross-section should meet load requirement, also It should be distinguish using different colours.The selection of each element should all meet load requirement, and the rated current of electric appliance should be by major loop It is selected more than or equal to motor rated current, motor rated current can be found from nameplate, to 380V motor It can be estimated by 2A/KW, and coil voltage should then be selected by supply voltage used in control circuit.

(3) element quality checks correct that installation site is reasonable, and fixed neat, secured, element remains intact, each member Part arrangement is with reference to as shown in the figure.

(4) press drawing correct wiring, figure is consistent in kind connect, line arrangement it is horizontal it is flat it is hard directly, face without intersection, across When major loop and control loop separate, trend is reasonable, neat appearance.

(5) conductor compression jointing fastens, and screw do not press insulating layer, do not hurt core, and core is exposed to be not more than 1mm, annulus is high-quality, Clockwise about to securely, uniformly (80~100mm mono-), direction are consistent for nylon cable tie binding, and terminal plate (terminal block) arrives button Using multiply copper core flexible cord, contact wiring impulse- free robustness, same contact is no more than 2 conducting wires, and coding casing is complete, and label is correct.

(6) melt selection and installation are correct；The rated current of major loop melt should be not less than 1.5~2.5 times of motor volumes The rated current of constant current, control loop melt is considered by 2A.It, should be clockwise about to screw crimping is elastic suitable when fuse is installed When.When installing fusion tube, upward, upper cap should screw the side with point, and each section contact is good.

(7) electrothermal relay adjusting is correct, and the action current of electrothermal relay is whole by 1.1~1.5 times of motor rated current It is fixed.

(8) wiring of motor and power supply line and the clearing sequence after energization operate correct, specification before being powered.Be powered examination When testing, it should close a floodgate step by step from power supply to load, finally by starting, stop button test run.Operation order after test run is then opposite.

(9) after operating, station is cleared up, Work tool, material are put neatly, and no dangerous phenomenon occurs, and accomplish safety It carries out production strictly in line with rules and regulations.

As depicted in figs. 11-12 (the single-phase steering controling circuit of the motor with overload protection installs circuit):

One, it constructs

(1) Work tool, material, equipment

(1) Work tool: personal electrician tool, 1 piece of multimeter.

(3) equipment: A.C. contactor 1, electrothermal relay 1,2, button, plug fuse 5, HH-30/20 power supply 1 piece of switch, 2 section of JF5-2.5/5 terminal block, 2.2KW threephase asynchronous 1.

(2) safety requirements

(1) when each component is installed, should check whether bottom plate is smooth, if bottom plate is uneven, be added gasket under component, to prevent Component is damaged when installation.(2) it should be noted that the proper use of of Work tool when operating, do not damage Work tool and component.(3) it is powered When test, operating method should be correct, it is ensured that the safety of the person and equipment.(4) phenomenon that notes abnormalities when test run or peculiar smell should be immediately Parking checking.

(3) construction procedure and requirement

1, construction procedure

(1) two places are drawn and operate motor single-turn to control principle wiring diagram.(2) by given drawing elder generation Work tool and member Device.(3) in specified position mounting related components.(4) line arrangement is carried out by technique requirement.(5) energizing test.

As illustrated in figs. 13-14 (reversible crawl service meter control circuit installs circuit):

One, it constructs

(1) Work tool, material, equipment

(1) Work tool: electrician individual's common tool, 1 piece of multimeter.

(2) material；Conducting wire BV-1.5mm²、BV-2.5mm², each several rice of BVR type multiply copper core flexible cord, nylon cable tie, band It is each several that cap pads bolt, special pipe (coding casing).

(3) equipment: A.C. contactor 2, electrothermal relay 1,1, button, 5 JF5-25/5 terminal blocks of plug fuse 3 sections, HH-30/20 power switch l block, 22kW threephase asynchronous l platform.

(2) safety requirements

(1) when a element is installed, it should be noted that whether bottom plate is smooth, if bottom plate is uneven, should be added gasket and prevent below element Component is damaged when installation.

(2) it should be noted that the proper use of of tool when operating, do not damage tool and component.(3) when energizing test, operation side Method should be correct, it is ensured that the person and equipment safety.(4) phenomenon that notes abnormalities when test run or peculiar smell should parking checkings immediately.

(3) construction procedure and requirement

1. construction procedure

(l) preparatory work before installation (select tools, material and component).(2) according to control circuit key wiring diagram Or element arrangements carry out the installation of electrical component in designated position with reference to figure.(3) it is laid by technique requirement.

2. technique requires

(l) shown in reversible crawl service meter control circuit principle wiring Fig. 9.

(2) conducting wire and element selection are correct, reasonable；Major loop and control loop conductor cross-section should meet load requirement, also l It should be distinguish using different colours.The selection of each element should all meet load requirement, in major loop the rated current of electric appliance answer l by It is greater than or waits T- motor rated current to select, motor rated current can be found from nameplate, can also to 380v motor It is estimated by 2A/kW, and coil voltage should then be selected by supply voltage used in control circuit.

(3) by element arrangements with reference to figure reasonable Arrangement, installation elements, element is fixed neat, secured, and remains intact, nothing Damage, each element arrangements are with reference to as shown in Figure 10, and mounting arrangements finish element.

(4) press drawing correct wiring, figure is consistent in kind connect, line arrangement very it is flat vertically, face without intersection, across When major loop and control loop separate, trend is reasonable, neat appearance.Fastening is connect, screw does not press insulating layer, do not hurt core, line Core, ring quality be good, clockwise about to nylon cable tie binding is securely, uniformly (direction 80-l00mm is consistent, terminal plate (terminal block) Multiply copper core flexible cord is used to button, contact wiring impulse- free robustness, no more than 2 conducting wire t coding casings of same contact are complete, label Correctly.

(6) melt selection and installation are correct；The rated current of major loop melt should be not less than l.5~2.5 times motor volume The rated current of constant current, control loop melt is considered by 2A.It, should be clockwise about to screw crimping is elastic suitable when fuse is installed When.When installing fusion tube, upward, upper cap should screw the side with point, and each section contact is good.

(7) electrothermal relay adjusting is correct, and the action current of electrothermal relay is by the l.1-1.5 whole again of motor rated current It is fixed.

(8) motor and power supply and clearing sequence operation after being powered is correct, specification before being powered.When energizing test, answer It closes a floodgate from power supply to load fortune grade, by starting, stop button test run after wearing.Operation order after test run is then opposite.

As shown in figure 15 (installation of common transformer concentrator, debug circuit):

One, it constructs

(1) Work tool, material, equipment

(1) Work tool: electrician's personality kit, cable wire stripping pliers l handle, hacksaw 1, electric drill (matches 2,2.5 drill bit of Φ), small Hammer l handle, tape measure l handle, 1, low pressure electroscope, clamp on amperemeter 1,1, multimeter, l000V insulation resistance meter 1.

(2) material: the conducting wire of BV-1 × 6 5m, BV-1 × 2.5 are yellow, green, red, unlicensed tour guide's line each 2m, BV-1 × 4 is yellow, green, red, black Each 1m of conducting wire, 1 bag of 3mm × l50mm nylon binding strap, disposable seal is several, fine sandpaper, 6 sets of the bolt of M10 × 20, and Φ 12 is padded Piece 12,15 sets of the bolt of M4 × 10,12,5 gasket of Φ, Φ 32PVC pipe 3m.

(3) equipment: band 1 piece of mutual inductor plastic electricity box, 3 × 1.5 (6) A three-phase and four-lines take control intelligent electric energy meter 1,150/5 Current transformer 3, combined connection box 1, D247-603P C32 breaker 1, RTO-100 fuse 3.

(the safety requirements of two J construction

(l) scene setting cover bar, warning sign.

(2) in source side disconnecting switch wiring, disconnecting switch pile crown is possible to charge voltage circuit, it is necessary to electrical verification, and Safety measure is carried out, guarantees safe enough distance, with protection against electric shock.

(3) when secondary circuit uses the conducting wire of same color, each connecting terminal label must be marked correctly, to prevent occurring False wiring.

(3) construction requirement and step

L. construction requirement

(1) wiring diagram is distinguished.Voltage, electricity are generally preferably used through the four line electric energy metering device mode of connection of TA access type orchid phase Flow point line access type is primarily adapted for use in three-phase and four-line summary table, a load current is greater than 50A and (is equivalent to three-phase load to be greater than 25kW) the case where.The specification of electric energy funeral mainly has 3 × 380/220V of voltage, 3 × 1-5 of electric current (6) A.

(2) it checks.Dressing, the cleaning and inspection of Work tool, material, equipment, electric energy metering device erecting bed.It is checking When, it should be specifically noted that the inspection of current transformer.Content include: verification current transformer ratio whether on attaching list as defined in Unanimously；Polarity verification, the current transformer of single electric current ratio, first winding go out line segment head end and are designated as Pl, and end is designated as P2, it is secondary around Group leading-out terminal head end is designated as Sl, and end is designated as S2.When installation, flow into main circuit current from Pl, P2 outflow；Sl and electrical energy meter electricity Stream connecting terminal electric current input terminal connects, and S2 is connect with electric energy meter current connecting terminal current outlet terminal.Band joint wiring When box, it is necessary to pay special attention to the corresponding relationship of above-mentioned terminal, otherwise will result in false wiring and cause measuring error.

(3) it is familiar with installation wiring diagram.

2 construction procedures

(l) primary circuit wiring.According to given current transformer, attaching single electric current than requiring, wiring is completed, wire length is surveyed Amount, conducting wire intercept, the end of a thread exploitation is connect with production, insulation recovery, the end of a thread, bundle and remaining line is handled.

(2) the installation wiring of secondary circuit.Secondary circuit refers to Current Transformer Secondary terminal to connection box of electric energy meter terminal Between electric current go the same way.In voltage, electric current separated time connection, the voltage circuit including electric energy meter.Wherein current loop conductor cross-section Product is not less than 4mm², other return wire sectional areas are not less than 2.5mm², using the insulated conductor of 500v.

1) electric energy meter is to the wiring between terminal box.Electric energy meter is general to voltage, the current loop conducting wire between terminal box 4mm is not less than using sectional area²Sub-thread copper core.Its installation operation is divided into wire length measurement and interception, the end of a thread exploitation conducting wire are walked Line, electric energy meter tail inlet-outlet line terminal connections, terminal box electric energy table side outlet terminal five steps of wiring.

When conducting wire the end of a thread is connect with table tail wiring hole, phase color, voltage terminal and current terminal are distinguished, is successively connect by label People, i.e. table tail 1 and 3,4 and 6,7 and No. 9 wiring holes successively inject ampere wires (or the correspondence of yellow, green, red, black four kinds of colors The connecting terminal of label) the end of a thread, (or correspondence label connects 2,5, No. 8 voltage conductors for successively injecting yellow, green, red three kinds of colors Line terminals) the end of a thread, No. 10 tap into black neutral conductor conducting wire (or connecting terminal of corresponding label) the end of a thread, and solid with screw needle pressure type It is fixed.Each wire the end of a thread fasten when, first tighten a screw above, after tighten a following screw, guarantee that two screws are uniform It tightens, conducting wire does not loosen.

2) terminal box to current transformer current loop wiring.According to DL/T 825-2002 " electric energy metering device installation Wiring rules " regulation, current transformer to the current loop conducting wire between terminal box should be using the copper line of sub-thread insulation；Respectively mutually lead Line is yellow, green, red with being respectively adopted, and the neutral conductor should be using black line or using private cable, and sectional area of wire is typically no less than 4mm2.It is installed wiring and is divided into wire length measurement and interception, the end of a thread exploitation, connecting terminal label mark, conductor wiring, Current Mutual Inductance The wiring of device connecting terminal, the outlet terminal wiring of terminal box mutual inductor side, the impossible road wiring of terminal box voltage, conducting wire binding eight steps Suddenly.

After peelling off each wire the end of a thread insulating layer, set covers each direction from all directions to set, and according to the number on wiring diagram It is numbered.

When using voltage, electric current separated time connection, Current Transformer Secondary side reliable ground.At this point, 3 Current Mutual Inductances clamor two The S2 connecting terminal of secondary side is shorted with identical conducting wire, and is connected to meter and is taken the photograph on case on ground terminal bolt.It is total using voltage, electric current When line connection, Current Transformer Secondary does not allow to be grounded.When conducting wire the end of a thread is connect with terminal box wiring hole, to distinguish phase sequence according to The input terminal of secondary insertion wiring big belly.

4) Insulation test.Wiring install check wiring it is errorless after, in addition to carrying out line test, also cope with secondary circuit Insulation is tested.When Insulation test, 500v insulation resistance meter is selected, test resistance is no less than 0.5M Ω.Otherwise it needs again It is secondary to be gone through, point of debugging, until insulation resistance examines qualification.

5) put into operation inspection.After inspection meets safe power transmission condition, carries out trial line charging and check program.Have service condition, counts It measures device and dedicated seal is set.

As illustrated in figs. 16-19 (distribution transformer insulation measurement equipment):

One, it constructs

(1) Work tool, material

(1) Work tool: 1, multimeter, 500V or 1000,2500V insulation resistance meter each 1,0~100 DEG C of thermometer 1 Only, 1, hygrometer, 1, stopwatch, p-wire is several, and 1 group of short-circuit grounding wire, discharging rod 1,1,10KV electroscope, low pressure is tested 1 in electric appliance, insulating glove 2 pairs, shading ring 2,1 set of electrician's personality kit, 1 set of safety barrier, nameplate is " from this disengaging！" 1 piece, " halt, Keep Clear-High Voltage！" 4 pieces, 1 piece of felt pad.

(2) material: 1, pen, recording sheet 1 is opened, and emery cloth 1 is opened, and cleaning cloth is several.

(2) safety requirements

(1) scene setting cover bar, nameplate.

(2) outdoor construction should carry out under good weather, and indoor construction should have illumination, ventilation condition.

(3) in detection process, it is ensured that personal safety.

(3) construction requirement and step

1, construction requirement

(1) according to task, Work tool, equipment are selected.

(2) setting requirements of site safety facility are correct, complete.Safety barrier setting, it is outside in construction personnel's entrance Suspension is " from this disengaging！" nameplate, it hangs and " is halted, Keep Clear-High Voltage outward in cover bar surrounding！" nameplate.

(3) distribution transformer is tested, and is carried out under a cooperation personnel.

2, operating procedure

(1) insulation resistance meter is selected.Insulation resistance meter can be divided into self-action and hand-rail type according to working power classification；By work Make voltage and can be divided into 500,1000,2500,5000V and 10000V etc. it is several, scale unit is M Ω.Self-action is by battery And transistor DC voltage converter makees power supply, and hand-rail type is with hand generator as power supply, therefore hand-rail type insulate Ohmmeter is also known as " megger ".Since the application method of self-action insulation resistance meter is simpler, the application method of hand-rail type is covered The content of self-action insulation resistance meter.

1) external structure.There are three connecting terminals for hand-rail type insulation resistance meter: indicating the terminal of " route " or " L " (also referred to as Phase line), it is connected on the conductor of equipment under test；The terminal for indicating " ground " or " E " is connected to shell or the ground connection of equipment under test；It indicates The terminal of " G ", the electrode for needing to shield when being connected to measurement.

2) selection principle.The selection of insulation resistance meter is determined according to the voltage class of tested device.Voltage is in 1KV or less Person selects 500V or 1000V insulation resistance meter；Voltage selects 2500V insulation resistance meter in 1KV and the above person.Insulation resistance meter Range ability not walk out measured object resistance value excessively, in order to avoid generate biggish error.

3) meter check (hand-rail type insulation resistance meter level is firm to place).

A) pointer is in IIth area of dial.

B) open circuit rocking-turn generator, pointer is directed toward " ∞ " when reaching certain revolving speed (120r/min).

C) generator is shaken in short circuit slowly, and pointer is directed toward " 0 ".

When meeting above three condition, illustrate that the insulation resistance meter is normal.

When short-circuit detecting, pointer cannot reach " ∞ ", illustrate that p-wire defective insulation or insulation resistance meter itself make moist.It answers Foreign matter between " L ", " E " two connecting terminal is removed with dry cleansing soft cloth.When necessary by the rotating insulated pad of instrument, if can't reach To " ∞ ", then p-wire should be replaced.By " L ", " E " two terminal shortcircuit, generator is shaken slowly, and pointer cannot be directed toward " 0 ", illustrate p-wire It does not connect or insulation resistance meter is problematic.

The p-wire of insulation resistance meter should select the good multiply annealed copper wire of insulation, and two connecting terminal lead of " L ", " E " is answered It is independent to separate, it avoids being intertwined, to improve the accuracy of test data.

4) wiring is used.When shaking survey insulation, insulation resistance meter should be made to keep rated speed (generally 120~150/ Rmin), remain a constant speed, avoid neglecting fastly suddenly slow.Before test, first the test pole of " E " connecting terminal lead and equipment under test is collided, After referring to and stablizing (general 1min).Read resistance value.After test, first by the survey of " L " connecting terminal lead and equipment under test It tries pole to disconnect, then stops rocking handle rotation.In this way, mainly preventing the capacitor of equipment under test from damaging insulation resistance meter reverse charge Indicator.

(2) operating method

1) prepare before test.Cover bar, suspension nameplate are installed around distribution transformer.By distribution transformer high and low pressure Group casing and conducting rod wiped clean.Running distribution transformer answers checking apparatus dual number to mark unanimously with work；Have a power failure behaviour Meet related request as program；Before test, after identifying true no-voltage and being substantially discharged, be grounded, two sides lead is removed.

2) check that (level is firm to place: pointer be in IIth area of dial to insulation resistance meter integrity, pointer direction when open circuit " ∞ ", pointer is directed toward " 0 " when short-circuit).

3) distribution transformer megger test project.

A) oil-immersed transformer megger test project: height-low and ground, low-high and ground, height-are low.

B) dry-type transformer megger test project: height-low and ground, low-high and ground, height-are low, low core-ground.

Transformer carries out also carrying out high and low pressure side winding path testing respectively outside above-mentioned megger test.

4) wiring is tested

A) height-low and ground: distribution transformer low-pressure side conducting rod is reliably connected with p-wire, is grounded and and insulation resistance Table " E " connecting terminal lead is connected, and is reliably connected distribution transformer high-pressure side conducting rod with another p-wire, with insulated electro Table " L " connecting terminal lead is hindered to be connected.

B) low-high and ground: distribution transformer high-pressure side conducting rod is reliably connected with p-wire, is grounded and insulation resistance meter " E " connecting terminal lead is connected, and is reliably connected distribution transformer low-pressure side conducting rod with another p-wire, with insulation resistance Table " L " connecting terminal lead is connected.

C) high-low: to be reliably connected distribution transformer low-pressure side conducting rod and insulation resistance meter " E " terminals with p-wire Sub- lead is connected, and leads distribution transformer high-pressure side with another p-wire and is reliably connected, with insulation resistance meter " L " connecting terminal Lead is connected.

D) winding access: by ipsilateral winding conducting rod two-by-two respectively with insulation resistance meter " E ", " L " connecting terminal lead phase Even.

5) megger test.Before test, it is familiar with the wiring of each test item.As it is high-low and insulation measurement, first " E " connecting terminal lead is connected into step down side pile crown conducting rod connecting line and reliable ground, insulation resistance meter balance is put It sets, then shakes power generation cleaner handgrip, when shaking speed and reaching 120r/min, " L " connecting terminal lead contact transformer high-voltage pile crown is led Electric pole connecting line.The insulation resistance of electrical equipment is different with the length of testing time.Usually with the pointer after 1min It subject to instruction, reads, record data.Keep revolving speed that " L " terminal lead dialysis distribution transformer high-voltage pile is first led connecting line, Stop generator rotation again.

In testing, such as discovery pointer direction " 0 ", the rotation of generator should be stopped immediately, burnt out to prevent being overheated in table.

According to the above method, height-low, low-high and ground insulation resistance is measured respectively.

6) high and low pressure winding path testing.Since winding D.C. resistance is smaller, multimeter should be used to measure winding access. Respectively test high and low pressure winding line between, alternate conducting situation.

When he is measured with multimeter, low-resistance gear should be selected；When selecting insulation resistance meter measurement, generator should be shaken slowly.

7) measurement data record.Insulating resistance value is measured, in addition to record R reading, should also record environment temperature at that time, wet Degree and oil-immersed transformer upper layer oil temperature analyze measurement error reason convenient for comparing the measurement result of different condition.

8) p-wire is removed.It is completed, it, should be abundant to distribution transformer after " L " connecting terminal lead leaves subject Electric discharge, then removes other p-wires.

And transformer that capacity bigger longer for cable run, electromechanical testing insulation resistance, then it is longer to be grounded the time, one As no less than testing time (1min).

As shown in figures 20-21 (distribution transformer direct current resistance m easurem ent equipment):

One, it constructs

(1) Work tool, material

(l) Work tool；Single each 1 of (double) arm electric bridge, 1, hygrometer, calculator 1, is surveyed by 0~100 DEG C 1, thermometer Examination 2 groups of line, short-circuit grounding wire l group, discharging rod 1, insulating glove 2 pairs, 1, pen, safety lose 1 set of column, nameplate " from this into Out！" l block, " halt, Keep Clear-High Voltage！" 4 pieces, 1 piece of felt pad.

(2) material: recording sheet 1 is opened, and emery cloth l, cleaning cloth is several.

(2) safety requirements

(1) scene setting cover bar, nameplate.

(3) in detection process, it is ensured that personal safety.

(3) construction requirement and step

1, construction requirement

(l) according to task, Work tool, equipment are selected.

(3) distribution transformer is tested, and is carried out under the cooperation of a personnel.

2 operating procedures

(l) electric bridge is selected.Electric bridge is the electrotechnical measurement instrument with comparative method for measuring resistance.There are many type of electric bridge, measurement Medium resistance value (1~10⁶Ω) wheatstone bridge is selected to measure；The resistance of bigger resistance value is measured, high resistance electric bridge is generally used Or insulation resistance meter；The lesser resistance (ln or less) of resistance value is measured, using double bridge.Electric bridge accuracy is high, stability is good, extensively It is general to be used in electromagnetic measurement, automatic adjustment and automatic control.

(2) operating method.

1) preparation before testing.

(a) safety measure: the dual title of checking apparatus, installing cover bar, suspension nameplate；Running transformer should be carried out Power failure, electrical verification after being substantially discharged ground connection, remove two sides lead.

(b) technical measures: cleaning high and low pressure casing and conducting rod；Transformer nameplate relevant information is made a copy of.

2) distribution transformer D.C. resistance test item.

(a) high-pressure side: U (uv), V (vw), W (wu) in different gears.

(b) low-pressure side: uo, vo, wo.

3) wiring is tested.Distribution transformer direct current resistance m easurem ent should be hindered according to capacity and the high and low pressure side winding of measurement Value selects instrument.When winding resistance is in or more, wheatstone bridge should be selected, when winding resistance is in ln or less, is answered Select double bridge.Figure 20 is resistance value between measurement distribution transformer high-voltage winding uV, uses the measurement wiring circle of wheatstone bridge；Figure 21 be measurement distribution transformer low pressure winding vo resistance value, uses the measurement wiring diagram of double bridge.

4) D.C. resistance is tested.D.C. resistance test should carry out on all positions of each tap switch.Before test, it is familiar with Each test item, every measurement wiring are with the use and skill of single, double arm electric bridge.

(use earth resistance tester measuring transformer ground resistance) as shown in figs. 22-23:

One, it constructs

(1) Work tool, material

(1) Work tool: ZC-8 type earth resistance tester 1, table, p-wire l group (BVR-25mmz:5m long 2,20, 40m long each 1, connecting terminal is installed in one end, and the other end installs crocodile clip) ,+16mm × 700mm detector bar 2 (matches Ml2X30 2 sets of bolt), 1 group of inspection earthing line, safety barrier is several, and nameplate is " from this disengaging！" l block, " halt, Keep Clear-High Voltage！" 4 pieces, Insulating glove 2 pairs, 1 set of electrician's common tool, operation stick 1,1 piece of felt pad.

(2) material: emery cloth is several, and electric power answers that platform rouge is several, and cleaning cloth is several, and it is several that distribution transformer holds most board.

(2) safety requirements

(l) scene setting cover bar, nameplate.

(2) it drafts this transformer to have had a power failure, but pile crown and above section charge on l0kV fuse

(3) human body must not touch not grounded ground lead.

(4) in test process, it is familiar with the performance and use of instrument, it is ensured that the person and equipment safety.

(3) construction requirement and step

1. construction requirement

Resistance surveys tester

(a) three terminal, (b) four terminal

(l) Work tool, equipment are selected according to task.Earth resistance tester, if selecting four terminal ground resistances Tester should separate the short circuit piece of terminal C2, P2, two terminal leads are connect respectively in grounding body when ground resistance is less than l Ω On, and make terminal P2 close to grounding body an example.

(3) safety measure before testing: before disconnecting ground lead, after ground lead temporary grounding, then grounding lead is removed The connection bolt of line and earthing pole, and detector bar and distribution transformer system earth interpolar are away from greater than 5m.

(4) test of ground resistance, record.

2. operating procedure

(1) preparation before testing.

1) checking apparatus title.

2) distribution transformer has a power failure (containing the shared all distribution transformers for being grounded and pulling).

3) ground lead installs inspection earthing line, removes ground lead main line and grounding body tie point.

(2) test wire.

1) two detector bars are respectively further to the underground of earthing pole 20m and 40m, are inserted perpendicularly into, depth is not less than 400mm.

2) earth resistance tester inspection.It is steady to place, return to zero；When open circuit, jog generator throw of pointer；When short-circuit At the uniform velocity shake generator, pointer direction ".".

3) with 5m conducting wire connection earth resistance tester E terminal and grounding body.

4) with 40m conducting wire connection earth resistance tester C (CI) terminal and distal side detector bar.

5) with 20m conducting wire connection earth resistance tester P (Pl) terminal and nearlyr detector bar.Gallon stick lead and electricity When pressing detector bar lead parallel arrangement, line-to-line is away from not less than 1m.

It 6), should be by the short circuit piece of terminal C2, P2 when selecting four terminal earth resistance testers to measure 1 Ω or less ground resistance It separates, is connected on tested grounding body with conducting wire respectively, and connect terminal P2 close to grounding body side, C2 access is grounded band iron Ground lead connecting pin, P ' lead are connected with a current potential detection ∥, and C ' is connected with gallon stick.

(3) it tests.

1) earth resistance tester is steadily placed, and according to the resistance of earthing pole, adjusting initial adjustment knob, (typically grounded resistance is surveyed Trying instrument, there are three adjustable extents, select high times keep off first).

2) with l20-150r/min at the uniform velocity swinging handle, when needle deflection center line (i.e. " 0 "), the tune in swinging handle Section fine tuning turntable, until stopping generator rotation after pointer direction center line is stablized.

3) mobile P ' or C ' detector bar, test ground resistance again.

As shown in figures 24-25 (fixed equipment of the conducting wire in pin insulator inverted draw cut):

One, it constructs

(1) Work tool, material

(1) Work tool: 1 set of electrician's common tool, 1 set of safety barrier, nameplate is " from this disengaging！" 1 piece, " in this work Make！" 4 pieces.(2) material: LGJ-35 conducting wire is several, and diameter is several not less than 2.0mm aluminium wiring, and 10 × 1mm aluminium armor tape is several.

(2) safety requirements

(1) scene setting cover bar, nameplate.(2) outdoor construction should carry out under good weather, and indoor construction should have photograph Bright, ventilation, cooling conditions.(3) in work progress, it is ensured that personal safety.

(3) construction requirement and step

1, construction requirement

(1) according to task, Work tool, material are selected.

(2) setting requirements of site safety facility are correct, complete.Safety barrier setting, it is outside in construction personnel's entrance Suspension is " from this disengaging！" nameplate, it hangs and " is worked herein outward in cover bar surrounding！" nameplate.

(3) complete independently.

2, operating procedure

(1) fixed insulator.Before insulator installation, verification and visual examination are carried out.Model specification whether with construction drawing one It causes；Metal part has non-corroding, bending, and whether nut matches with screw rod button, if securely, is vertically mounted in porcelain piece；Glaze paint Whether smooth, whether there is or not breakages for porcelain facing.

Insulator should be fixedly attached on cross-arm or bar ceiling hold.Insulator inverted draw cut and straight line pole conducting wire, small angle tower bar turn Angular bisector is parallel.Every insulator should all use gasket, spring pad, and specification is greater than one grade of screw rod.In no spring pad In the case where, install an anti-skidding nut additional.

(1) aluminium armor tape is wound.To avoid to make because of Long-term Vibration at the binding of LGJ, LJ type conducting wire on the insulator At damage, LGJ, LJ type conductors before fixation, wind 10 × 1mm aluminium armor tape.

Take suitable length aluminium armor tape disk at roundel, by both ends to volume.Aluminium armor tape should be wound two layers, and internal layer is by conducting wire binding Place is intermediate to be wound to both ends respectively.

Behind internal layer one ends wound to corresponding position, then back to the winding of midpoint completion outer layer.After the completion of one ends wound, The winding of the other end is completed with same method.End redundance is cut off respectively, and broken end is pressed in conducting wire binding midpoint By the inside of insulator.

Shown in the requirement of aluminium armor tape winding, specific winding requires as follows:

1) aluminium armor tape winding direction is consistent with wire external layer twisting.

2) aluminium armor tape coiling length respectively exposes 20~30mm for two sides after conducting wire binding.

3) close-packed arrays, smooth are answered in aluminium armor tape winding.

4) aluminium armor tape tail end must be pressed on the inside of conducting wire and insulator contact position.

(3) wiring is selected.In, low-voltage distribution overhead line conductor it is fixed on straight line pole, small angle tower bar insulator, generally Using wiring winding method.

Wiring material is consistent with conducting wire.Its specification is depending on sectional area of wire.It binds linear diameter and is not less than 2.0mm.

(4) conducting wire binding.There are two types of the improving bud grafting of conducting wire on the insulator, i.e. inverted draw cut binding and the binding of neck slot.

When rod-type is straight line pole, conducting wire generally uses " 2,4,6 " rule, i.e. insulator top in insulator inverted draw cut improving bud grafting Slot, neck slot, both ends conducting wire bind 2,4,6 circles respectively, and 2 circles of inverted draw cut form spider.So inverted draw cut " 2,4,6 " rule is also known as pushed up Slot " single cross " method.

For convenience of operation, before conducting wire binding, wiring is coiled into lopping first, wiring is coiled into diameter not less than 2mm ringlet It covers on right hand thumb, sequentially by wiring, successively pitch of the laps, extra wiring are met the requirements when binding is let the hair grow by inside and outside.

1) conducting wire is as follows in the specific operation process of insulator inverted draw cut " single cross " method:

A) binding is reserved length is not less than 2/5 brachycephaly (or buttock line) of insulator neck slot perimeter, and binding wire, which is placed on, leads It is consistent with wire external layer process direction (referred to as " head is around three elements ") that station, winding direction are directed toward in line lower section, brachycephaly end.By disk Line end penetrates on the outside of self-insulating sub- neck below (head is around side) conducting wire on the right side of insulator, above conducting wire, twines on conducting wire Around 3 circles.

B) by arrow direction shown in figure, by disk line end by the neck outside of insulator under the conducting wire of the insulator other side Side winds 3 circles on conducting wire.

C) by arrow direction shown in scheming, by the inside of the self-insulating sub- neck of disk line end around head below the conducting wire of side, wear to On the outside of conducting wire upwards, conducting wire is pushed down by insulator top cross；Then downwards by conducting wire, by the outside of neck around head around side Below conducting wire, conducting wire is pushed down by insulator top cross.

D) by arrow direction shown in scheming, by disk line end through below conducting wire, on the inside of insulator neck around head around end, through conducting wire Underlying wound 3 encloses；Then disk line end is through through below left lead, winding 3 is enclosed on the outside of edge neck.

E) arrow direction shown in scheming is pressed, by disk line end through its neck inside, right side conducting wire lower section, insulation on the left of insulator On the outside of sub- neck, below insulator left lead around 1 circle, with brachycephaly on the inside of insulator neck an intermediate stubborn plait, more than cutting Wiring simultaneously flattens plait.

2) detailed process is as follows in insulator inverted draw cut " diesis " method for conducting wire: completing two-wire according to inverted draw cut " diesis " method After shown, continue shown progress in the direction of arrows, it is last according to progress and shown receipts pigtail shown in arrow direction.

As shown in figs. 26-27 (fixed equipment of the conducting wire in pin insulator neck slot):

One, it constructs

(1) Work tool, material

(1) Work tool: 1 set of electrician's common tool, 1 set of safety barrier, nameplate is " from this disengaging！" 1 piece, " in this work Make！" 4 pieces.

2) material: LGJ-35 conducting wire is several, and diameter is several not less than 2.0mm aluminium wiring, and 10 × 1mm aluminium armor tape is several.

(2) safety requirements

(3) construction requirement and step

1, construction requirement

(1) according to task, Work tool, material are selected.

(3) complete independently.

2, operating procedure

(2) aluminium armor tape is wound.To avoid to make because of Long-term Vibration at the binding of LGJ, LJ type conducting wire on the insulator At damage, LGJ, LJ type conductors before fixation, wind 10 × 1mm aluminium armor tape.

A) aluminium armor tape winding direction is consistent with wire external layer twisting.

B) aluminium armor tape coiling length respectively exposes 20~30mm for two sides after conducting wire binding.

C) close-packed arrays, smooth are answered in aluminium armor tape winding.

D) aluminium armor tape tail end must be pressed on the inside of conducting wire and insulator contact position.

In the rod-type that small angle tower, conducting wire are not cut-off, conducting wire should be rotated in insulator neck slot and exterior angle side.Its binding side Method generally uses " 2,6,7 " rule, i.e. the outer neck slot of insulator, interior neck slot, both ends conducting wire kidnaps prick 2,6,7 circles, outer neck slot respectively 2 circles formed spider.So neck slot " 2,6,7 " rule is also known as neck slot " single cross " method.

A) binding is reserved length is to be placed below conducting wire not less than 3/5 brachycephaly (or buttock line) of insulator neck slot perimeter, It is consistent with wire external layer process direction (referred to as " head is around three elements ") that station, winding direction are directed toward in brachycephaly end.By disk line end by It is penetrated below (head is around side) conducting wire from the outside of neck on the right side of insulator, above conducting wire, disk line end is made to wind 3 on conducting wire Circle.

B) by arrow direction shown in scheming, by under brachycephaly on the inside of the self-insulating sub- neck of disk line end, around insulator left lead Under around upwards, the Zha3Quan on conducting wire, as shown in figure two-wire.

C) on the inside of the self-insulating sub- neck of disk line end around head around side, intersection is pressed in conducting wire on the outside of neck from conducting wire above On, it is then worn below insulator left lead on the inside of insulator neck, first below the conducting wire of side, the intersection pressure on the outside of neck Conducting wire is drawn by top, as shown in figure two-wire.

D) disk line end is enclosed through below conducting wire, winding 3 on side, opposite side conducting wire in head respectively on the inside of insulator neck, As shown in figure two-wire.

E) disk line end is enclosed below the conducting wire of insulator neck around 1, finally by disk line end and brachycephaly in insulator neck A plait is twisted among side, is cut off redundance pressing, is completed binding, as shown in the figure.Shape after the binding of neck slot " single cross " method As shown in the figure.

2) detailed process is as follows in insulator inverted draw cut " diesis " method for conducting wire: neck slot " diesis " method completes figure two-wire After shown, continue shown progress in the direction of arrows, it is last according to progress shown in arrow direction and by shown receipts pigtail.

As shown in figure 28 (NUT wire clamp makes bracing wire):

One, it constructs

(1) Work tool, material

(1) Work tool: electrician's personality kit, bolt clipper, safety appliance, wooden mallet, marking pen, paintbrush.

(2) material: GJ-35 steel strand wires, NUT-1 wire clamp, No. 16 galvanized wires, No. 14 galvanized wires, anti-theft screw cap are red red Paint.

(2) safety requirements

(1) cover bar is installed in work-yard, and cover bar surrounding hangs nameplate outward.

(2) prevent steel strand wires rebound from hurting sb.'s feelings, one people helps line, a people to cut when disconnecting steel strand wires, it should be held when being bent steel strand wires, Galvanized iron wire tray is put at roundel in winding.

(3) using wooden mallet gloves are taken off when, steel strand wires main line is shouldered piggyback, and two legs separate, and wooden mallet impetus is lower than people's Arm prevents wooden mallet from falling off from hand and hurts sb.'s feelings.

(3) construction requirement and step

1, construction requirement

(1) Work tool, material are selected according to task.(2) setting requirements of site safety facility are correct, complete.(3) NUT wire clamp makes bracing wire, carries out under a cooperation personnel.

2, construction procedure

(1) blanking.It is required according to production, cuts certain length steel strand wires.It is first marked at cutting when cutting, and Away from label both ends 30mm or so place, using No. 16 iron wire binding 20mm+10mm and buttock line is tightened.Iron wire winding direction and steel twist Line outer layer twisting is consistent.Steel strand wires are cut under the assistance of support staff.

(2) it makes.

1) it prints.When NUT wire clamp makes bracing wire, the long motherwort of buttock line is generally wedge of emersion subexit 400mm ± 10mm (reference GB50173-2014 " electric device installing engineering 66KV and the construction of following overhead power line and acceptance specification ".Steel strand wires bending Point is generally buttock line length+chock length, i.e., measures 400mm ± 10mm+ bending point to exit length from steel strand wires end and print.

2) NUT wire clamp element is dismantled.It dismantles NUT wire clamp and adjusts bolt, chock.

3) steel strand wires are bent.Steel strand wires end is penetrated from NUT wire clamp osculum.Left or right foot tramples main line, right or left Tail ends are pulled, the left or right hand control steel strand wires place of printing is bent.By steel strand wires main line, buttock line in buttock line exit It is fabricated to horn mouth apperance.

4) chock is installed.Steel strand wires buttock line penetrates NUT wire clamp, and buttock line is made to be in the bulging direction of NUT wire clamp, main line position In the in-plane of NUT wire clamp, NUT wire clamp is pulled to after certain position and penetrates chock.

5) chock is firm.After chock tension is gathered, folder of breasting the tape is struck with wooden mallet makes steel strand wires, chock coincide in NUT wire clamp, and Knee is secured, seamless, no broken lot phenomenon.Close between steel strand wires and chock, gap is less than 2mm.

6) buttock line is bound.Thirty years of age of operator and support staff opposite, it is using the fixed buttock lines of No. 14 iron wires, buttock line is secured Binding is on main line.Binding wire winding direction is consistent with steel strand wires outer layer torsion line.Binding length is 50mm+10mm (reference GB50173-2014 " electric device installing engineering 66KV and the construction of following overhead power line and acceptance specification "), binding wire is tight Solid matter arranges, is smooth, not hurting line.Binding wire buttock line is lain in two lines (master, buttock line) joint close to 2~3 bouts are turned round.Binding wire Away from 30~50mm of tail ends.After buttock line is fixed, steel strand wires main line is parallel with buttock line, beautiful.

(3) preservative treatment.Red red paint is brushed at NUT wire clamp buttock line tie wire, buttock line cutting.

As shown in figure 29 (wedge type clamp production bracing wire):

One, it constructs

(1) Work tool, material

(2) material: GJ-35 steel wire, NX-1 wedge clamp, No. 16 galvanized wires, No. 14 galvanized wires, red silk paint.

(2) safety requirements

(1) cover bar is installed in construction site, and cover bar surrounding hangs nameplate outward.

(2) prevent steel strand wires rebound from hurting sb.'s feelings.One people helps line, a people to cut when disconnecting steel strand wires, should hold when being bent steel strand wires, Galvanized iron wire tray is put at roundel in winding.

(3) it prevents from wooden mallet from falling off from hand to hurt sb.'s feelings.Gloves are taken off when using wooden mallet；Steel strand wires main line is shouldered piggyback, wire clamp Angle is placed in front, and distance away the ground is above and below knee；When wooden mallet taps wire clamp, two legs are separated.

(3) construction requirement and step

1, construction requirement

(1) Work tool, material are selected according to task.

(2) setting requirements of site safety facility are correct, complete.

(3) wedge clamp makes bracing wire, carries out under a cooperation personnel.

2, construction procedure

(1) blanking.It is required according to production, cuts certain length steel strand wires.Before cutting, marked at cutting, and Distance label both ends 30mm or so place using No. 16 iron wire binding 20mm+10mm and tightens buttock line, iron wire winding direction and steel Twisted wire outer layer twisting is consistent, cuts steel strand wires under the assistance of support staff.

(2) it makes.

1) it prints.When wedge clamp makes bracing wire, buttock line length exposes chock outlet 300mm ± 10mm (reference GB50173-2014 " electric device installing engineering 66KV and the construction of following overhead power line and acceptance specification ").Steel strand wires are curved Song point is generally buttock line length+chock length, i.e., draws from from steel strand wires end measurement 300mm ± 10mm bending point to outlet director's motherwort Print.

2) wedge clamp element is dismantled.It dismantles wedge clamp and connects bolt, chock.

3) steel strand wires are bent.Steel strand wires end is penetrated from wedge clamp osculum.Left or right foot tramples main line, right or left Tail ends are pulled, the left or right hand control guiding principle twisted wire place of printing is bent.By steel strand wires main line, buttock line in buttock line exit It is fabricated to horn mouth apperance.

4) chock is installed.Steel strand wires buttock line penetrates wedge clamp, and buttock line is made to be in the bulging direction of wedge clamp, main line Positioned at the in-plane of wedge clamp, wedge clamp is pulled to after certain position and penetrates chock.

5) chock is firm.After chock tension is gathered, folder of breasting the tape is struck with wooden mallet makes steel strand wires, chock coincide in wedge clamp, And knee it is secured, it is seamless, without broken lot phenomenon.Close between steel strand wires and chock, gap is less than 2mm.

6) buttock line is bound.Thirty years of age of operator and support staff opposite use the fixed bracing wire buttock lines of No. 14 iron wires, binding wire Winding direction is consistent with steel strand wires outer layer torsion line.Binding length is 30mm ± 10mm (referring to GB50173-2014 " electric device peace Fill engineering 66KV and following overhead power line construction and acceptance specification "), binding wire close-packed arrays, it is smooth, do not hurt line.Binding Line buttock line is lain in two lines (master, buttock line) joint close to according to 2~3 bouts.Binding wire is away from 30~50mm of tail ends.Buttock line After fixation, steel strand wires main line is parallel with buttock line, beautiful.Wedge clamp connects bolt, closed pin assembling.

(3) preservative treatment.Red red paint is brushed at wedge clamp buttock line tie wire, buttock line cutting.

As shown in Figure 30-35 (1-10KV power cable insulation resistivity-measuring devices):

One, it constructs

(1) Work tool, material

(1) Work tool: 500v or 1000,2500V insulation resistance meter each 1,0~100 DEG C 1, thermometer, hygrometer 1 Only, p-wire is several, and 1 group of short-circuit grounding wire, discharging rod 1,1,1kV electroscope, 1, pen, paper l, shading ring 2, cleaning Cloth is several, electrician's common tool l set, and 2 sets of safety barrier, nameplate is " from this disengaging！" l block, " halt, Keep Clear-High Voltage！" 4 pieces, 1 piece of felt pad.

(2) material: YJL_V22- 0.6/1kV-4X50 cable 20m.

(2) safety requirements

(l) scene setting cover bar, nameplate.(2) outdoor construction should carry out under good weather, and indoor construction should have photograph Bright, ventilation condition.(3) reliable cover bar is arranged in cable testing, the other end, if special messenger guards.(4) in work progress, it is ensured that the person Safety.

(3) construction requirement and step

1. construction requirement

(l) according to task, Work tool, equipment are selected.(2) setting requirements of site safety facility are correct, complete.Peace Full cover bar setting is hung outward in construction personnel's entrance " from this disengaging！" nameplate, hung outward in cover bar surrounding " it halts, Keep Clear-High Voltage！" nameplate.(3) cable testing carries out under a cooperation personnel.

2. operating procedure

(l) insulation resistance meter is selected.

Insulation resistance meter can be divided into self-action and hand sowing formula according to working power classification；500 can be divided by operating voltage, 1000,2500,5000v and 10000v etc. is several, and scale unit is M Ω.Self-action is by battery and transistor DC voltage Converter makees power supply, and hand-rail type is to make power supply with hand generator, therefore hand-rail type insulation resistance meter x claims " megger ".By Relatively simple in the application method of self-action insulation resistance meter, the application method of hand-rail type covers self-action insulation resistance meter Content.

1) external structure.There are three connecting terminals for hand-rail type insulation resistance meter: indicating the end of " route " or " L " in (also referred to as Phase line), it is connected on the conductor of equipment under test；The terminal for indicating " ground " or " E " is connected to shell or the ground connection of equipment under test；It indicates The terminal of " G ", the electrode for needing to shield when being connected to measurement.

2) selection principle.The selection of insulation resistance meter is determined according to the voltage class of tested device.Voltage is in 1kV or less Person selects 500v or 1000V insulation resistance meter；Voltage selects 2500V insulation resistance meter in lkV and the above person.Insulation resistance meter Range ability not exceed measured object resistance value excessively, in order to avoid generate biggish error.

A) pointer is in IIth area of dial.B) open circuit rocking-turn generator, pointer refers to when reaching certain revolving speed (120r/min) To " ∞ ".C) generator is shaken in short circuit slowly, and pointer is directed toward " 0 ".

When meeting above three condition, illustrate that the insulation resistance meter is normal.When short-circuit detecting, pointer cannot reach " ∞ ", Illustrate that p-wire defective insulation or insulation resistance meter itself make moist." L ", " E " two connecting terminal are removed using dry cleansing soft cloth Between foreign matter, when necessary by instrument place felt pad on, if " ∞ " can't be reached, p-wire should be replaced.By " l.", " E " two Terminal shortcircuit shakes generator slowly, and pointer cannot be directed toward " 0 ", illustrates that p-wire does not connect or insulation resistance meter is problematic.Insulation resistance The p-wire of table should select the good multiply annealed copper wire of insulation, and two connecting terminal lead of " L ", " E " should be separated independently, avoid winding Together, to improve the accuracy of test data.

4) wiring is used.When shaking survey insulation, insulation resistance meter should be made to keep rated speed (generally 120-l50r/ Min), remain a constant speed, avoid neglecting fastly suddenly slow.Before test, first " E " connecting terminal lead is connected to the ground with equipment under test shell It connects.After swinging handle to rated speed, then the test pole of " L " connecting terminal lead and equipment under test collided, is stablized to pointer (general Imin) afterwards reads resistance value.It is first that the test pole of " I. " connecting terminal lead and equipment under test is disconnected after test It opens, then stops rocking handle rotation.In this way, mainly preventing the capacitor of equipment under test from damaging indicator to insulation resistance meter reverse charge.

(2) operating method.

1) preparation before testing.Cover bar is installed in cable ends respectively, hangs nameplate.Check oversheath, insulating layer Without it is damaged, without folding line, steel armour is clearly separated with conductor, by tested cable wiped clean, by cable conductor and cable metal sheath It is grounded, is substantially discharged, when necessary, special messenger is sent to guard.

2) check that (horizontal positioned firm: static pointer is directed toward IIth area to insulation resistance meter integrity, and open circuit pointer is directed toward " ∞ ", short-circuit pointer should be directed toward " 0 ").

3) prepare before wiring.Check cable jacket, insulating layer without it is damaged, without folding line；Steel armour is clearly separated with conductor；It will Tested cable wiped clean.

4) wiring is tested.

A) it surveys and takes the photograph single-core cable conductor insulation against ground resistance, " E " connecting terminal lead is connected with cable jacket, can be abutted against Ground, " L' connecting terminal lead is connected with cable conductor.Multiple-core cable conductor insulation against ground resistance is measured, by shielding line (steely Armour) it is connect with " E " connecting terminal lead of insulation resistance meter, reliable ground, " L. " connecting terminal lead and wireline test phase phase Even.

Resistor wiring circle

B) when commissioning test, U relatively megger test wiring.

C) it is the accuracy of guarantee test such as climate influence, lead should be held mutually to insulate with subject by insulation resistance meter " G " Part is connected, resistor wiring figure.

D) multicore cable phase insulation: by multicore cable test mutually respectively with " E " connecting terminal of insulation resistance meter and " L " connecting terminal lead is connected with measurement phase conductor respectively.U, the alternate megger test wiring of V two.

E) cable inner sheath insulate: by the shielded layer of cable and steel armour respectively with " E " connecting terminal of insulation resistance meter and " L " connecting terminal lead is connected with cable metallic screens layer, steel armour lead respectively.

5) megger test.Before test, it is familiar with the wiring of various measurements.First by " E " connecting terminal or " G " connecting terminal After lead connection is finished, checked correctly, insulation resistance meter is steadily placed, then shakes power generation cleaner handgrip, is shaken speed and is kept 120r/min When, " L " terminals lead is abutted against into subject phase conductor.The insulation resistance of electrical equipment is with the length of testing time and not Together, usually it is subject to the instruction of the pointer after 1min, out-of-date data are the measured object secondary test datas, are read, record data.It protects Revolving speed is held, the lead dialysis of " L " terminals is first tested phase conductor.

6) measurement data record.When power cable insulation resistance test records, should record simultaneously environment temperature at that time and Humidity, convenient for comparing the measurement result of different times, the reason of analyzing measurement error.In measurement insulating resistance value, should remember respectively Reading when 15,60s is recorded, to calculate the absorptance of subject.

7) p-wire is removed.It is completed, after " L " connecting terminal lead leaves subject, subject should be substantially discharged, Ground connection, then removes other p-wires.The equipment longer for cable run, capacity is bigger tests insulation resistance, then when discharging Between it is longer, the testing time generally be no less than 1min.

It is as shown in figure 36:

One, it constructs

(1) Work tool, material, equipment

(l) Work tool: electrician's personality kit, 1, serration steel handsaw, 1 set of gas blowout torch of liquefaction, Press Plier l, smooth file l , 2m steel tape l, canvas gloves l bis-, 1 handle of electric iron (500W), 1 set of electrician's personality kit, cable bearer (containing strain relief clamp Tool) l set.

(2) material: the cable of YJV22-3 × 25+1 × 16 3m, 1 set of lkV RST-4/1 thermal shrinkage cable joint, l bags of detergent, 0 Number gauze l, l volume of soldering tin bar, 1 box of solder(ing) paste, cable protection pipe and bolt (according to cable fixture selection).

(3) equipment: 1, multimeter, 1000V insulation resistance meter 1.

(2) safety requirements constructed

(1) scene setting cover bar, warning sign.

(2) production of cable terminal should be carried out by the trained personnel for being familiar with technique, or in the finger of aforementioned personnel Lead lower progress.

(3) construction site meets fire safety regulation, environment space needed for having construction.When making cable terminal, It should be carried out under the conditions of weather is good, and should have the measure for preventing dust and external dirt.

(4) for the production of lv power cable head, generally use SY type thermal shrinkage cable joint external member, by special producer according to The thermal shrinkage cable joint external member of different size production contains all material required for production, consumptive material and manufacture craft size letter Figure, the size indicated according to schematic diagram and sequence gradually carry out that production work can be completed.

(5) ensure the person and equipment safety in work progress.

(3) construction procedure and requirement

(1) confirmation cable model specification is consistent with assorted scheme is set.

(2) accessory of confirmation cable terminal is answered complete, and is met the requirements.

(3) specific size being connect according to cable with equipment, marks on cable, and four remove extra cable, according to The requirement of cable end set gauge size, strips cable jacket.

(4) saw removes armouring.It opens and interim binding is done at the sawed-off place of Steel armor of cable with thin wire or copper wire before sawing, steel when preventing from sawing Armour shaking loosens.Extended at 5mm again with serration hacksaw first of clamp position, steel armour is sawed into annular kerf, must not be sawed.With Flat mouth screw driver provokes the sharp corner of kerf steel armour, using pliers by steel armour along saw acne tear fracture, with plate smooth file by fracture Burr finishing is smooth.

(5) lv power cable generality is tested.The electrical test of power cable is the important of guarantee cable running safety One of measure.By test, it can be found that the variation of cable insulation characteristic and its internal defect that may be hidden.Dress table meets electrician Cable " commissioning test " part is related generally to, for the power cable of low-voltage crosslinked pe sheath insulation, commissioning test is only done Insulation measurement.When necessary, ac voltage withstanding test can also be done.

Select lkV insulation resistance meter, respectively between cable core, core wire megger test is done to Sheathed metal position. Before test, cable both ends core wire is peeled off to hanging, core wire exposed part holding certain space distance.

Insulating resistance of cable test is done to 4 core power cables, test data should be greater than 10M Ω.In GB 50303-2002 Provided in " building electric engineering construction quality accident specification " 18.1.2 money: low tension wire and cable, between line and line over the ground between Insulating resistance value have to be larger than 0.5M Ω.For new cable, commissioning test should be done according to the technical requirements of big dry 10M Ω.Electricity The Insulation test of power cable belongs to testing capacitor load, in addition to the application method to insulation resistance meter requires, is completed Afterwards, each core wire should sufficiently be discharged over the ground.Because of test object category lv power cable, insulation resistance meter " G " terminals are It is no to be connect with cable sheath, test data is influenced little.

(6) fabrication and installation steel band clip.The steel armour surface rust protection paint polishing for being grounded welding position is clean, with production Steel band clamp is closely connected together ground line and steel armour；The effect of clip is to prevent steel armour from loosening the braiding of dead earth Annealed copper wire.Using the discarded steel armour stripped down, steel armour can be divided into two with metal shears, the binding at the position " A " is will to connect Ground wire positioning prevents ground line bump stress.It can be bound with steel armour hoop, after 2.5-4mmz single strand of copper wire can also be used tin plating Grafting.

(7) welding armouring ground line (16mmz naked copper weaves flexible cord).Using 300W or 500w electric iron, in " B " point front and back Ground connection annealed copper wire is reliably welded on two layers of steel band, cannot be by packet insulation scald in cable.It is required that by figure " c, ' the long l5- in position The soft system establishment band plating of 20mm is fully welded tin, prevents moisture from immersing along braiding copper strips.

(8) cable branch part sheath and filler are stripped.

(9) end is filled.One is use cable filler (or electrical plastics band) by four core bifurcateds and system packet root Glomeration is wrapped up in portion, then covers human branching gloves；It is another that branched bushing is directly covered into people's cable root, carry out pyrocondensation.For low Piezoelectric forces cable, two kinds of processing methods can meet technical requirements.

(10) (pyrocondensation) branched bushing is installed, the system packet portion of fingerstall is greater than 60mm, covers people's core root.It is wanted in fingerstall There is a sealant (producer is coated in pullover inner wall in advance by cable pyrocondensation headgear) of precoating, when heating, sealant softer filler headgear Sealed damp-proof is played the role of in inner space.Using blowtorch or liquefied gas blowtorch, part first is covered to branch and is heated, receives it uniformly Contracting is gradually shunk to system packet heating conduit, after shrinking completely, it is seen that a small amount of sealant is by hot extrusion.

(11) installation crimping connecting terminal (wiring nose).Add lOmm with the depth of wiring nasal tube, strips core insulation, clearly Line nose direction is regulated except conductive paste (or neutral vaseline oil) t in pipe and the oxide layer on core surface, is smeared on core, is used Crimping Pliers crimps line nose with core, should use hexagonal pressing mold, no less than two moulds.

(12) split-phase heat-shrink tube is installed.Fingerstall is inserted in 20-30mm by split-phase heat-shrink tube, and wiring nasal side will cover people 30mm, Heat-shrink tube can also be made slightly long, after the completion of pyrocondensation, cut away redundance with electrician's knife.Using blowtorch or spray torch along hand Refer to that root is evenly heated upwards, makes heat-shrink tube uniform shrinkage until four refer to and shrink completely.

(13) pyrocondensation rain cover is installed.Appropriate location on the split-phase core handled well covers 1-2 pyrocondensation rain-proof of people Cover, after heating, tightens it closely on split-phase core, makes end in installation site, rainwater will not fair line core flow down it is (low Voltage cable also has the production method for not installing rain cover).

(14) by phase color hoop pyrocondensation in Wiring nose root.

(15) terminals are fixed on a predetermined position.

It is as shown in figure 37:

One, it constructs

(1) Work tool, material

(1) Work tool: electrician's personality kit, wire brush, fine sandpaper, hydraulic tongs, bolt clipper, vernier caliper, wooden mallet, file Knife, work number punching block, hacksaw, saw blade, cleaning cloth, marking pen, safety appliance, 10-12 iron wire are several.

(2) material: 95/20 conducting wire of LGJ-and its splicing sleeve, detergent, binding wire, electric force compounded grease, insulating tape, pellet Red paint.

(2) safety requirements

(1) edge of a knife wound is prevented.When removing wire insulation, the edge of a knife is outside, cannot be directed at other operators.(2) Prevent rebound from hurting sb.'s feelings.When cutting conducting wire, a people helps line, a people to cut；The binding drum used is at roundel.(3) tool is prevented to hurt People.Splicing sleeve press when, remind or see clearly the personnel of dubbing finger leave pressing mold after start to press.(4) prevent electric shock from injuring.Make When with electric tool, electric tool source side installs aftercurrent action protecting equipment.(5) cover bar, cover bar are installed in construction site Surrounding hangs nameplate outward.

(3) construction requirement and step

L construction requirement

(l) Work tool, material are selected according to task.

(2) setting requirements of site safety facility are correct, complete.

(3) hydraulic method conducting wire docks, and matches at one and carries out under platform personnel.

2 construction procedures

(l) it cleans.

1) conducting wire cleans.According to splicing sleeve k degree, by 2 times of connecting length of tube of conducting wire connector end twisted wire broken lot, with cleaning Cloth dips in detergent and cleans respectively to per share conductor.It cleans and dries, place stand-by at dry, cleaning.

2) splicing sleeve cleans.It is clean to connect pipe outer wall, with iron wire binding fritter cleaning cloth, dips in detergent, removing connects Continuous inside pipe wall dirt.It cleans and dries, place stand-by at dry, cleaning.

3) one layer of electric power is applied in wire interconnecting piece position and splicing sleeve aluminum contact surface and answer platform electric power rouge, removed with finer wire brush Surface film oxide retains coating.

(2) pressing mold is selected.Matching pressing mold is selected according to wire gauge.

(3) splicing sleeve, which prints, cuts out line.

1) aluminium hydraulic pressed connecting pipe is selected.According to the pertinent regulations that conducting wire connects, all specification platen presses are carried out.Sectional area is in 240mm² Above aluminum stranded conductor, steel-cored aluminium strand and the insulated conductor or insulated conductor crimp type terminal, it is necessary to be pressed using hydraulic method It connects.The docking of conducting wire is that guide line is attached with coaxial manner.When conducting wire and aluminium hydraulic pressed connecting pipe are coaxially connected, conducting wire after crimping On mutual central axis, the intensity of connection is larger for stress and the stress of aluminium hydraulic pressed connecting pipe.Large-section lead is using wide molding Connect, wide mould, coaxially connected mode crimp after connect tube exterior be in continuous uniform regular hexagonal prism.Small section lead can be used narrow Molding connects, narrow mould, coaxially connected mode crimp after splicing sleeve present discontinuous round, positive six sides impression shape.

A) the hydraulic connecting of aluminium aluminum steel；(b) copper core aluminum stranded conductor connects

Aluminum stranded conductor conducting wire uses aluminum splicing sleeve, according to conductor cross-section, pressing mold width, directly presses by certain rule, multiple It closes conducting wire (steel-cored aluminium strand) and then uses two kinds of steel, aluminium splicing sleeves.

2) monometallic wire-connection draws lines.1. measuring splicing sleeve overall length, tag line is done at 1/2 length of splicing sleeve.@difference It is measured in two wire terminations and carries out tag line, i.e. splicing sleeve port lines at 1/2 connecting length of tube.3. being connect using width molding, therefrom Centre tag line starts pressure mark, successively carries out tag line along overlap mode by subsequent pressing mold limit.4. it is pressed using narrow mould, center The mode of pressing does not carry out impression label.Tag line is done in each position 3mm in splicing sleeve central identification line two sides, i.e. 6mm not pressure area.Respectively The tag line for drawing pressing mold width, two impression spacing 5mm is repeated in not pressure area two sides.

3) compound wire scribing line, cutting.1. measuring steel splicing sleeve overall length, and tag line is done at its 1/2 length.2. dividing It is not measured in two wire terminations and carries out outer layer conductor cutting tag line at 1/2 steel connecting length of tube+10mm.In tag line 20mm Outer layer conductor is bound using thin tied silk at left and right, prevents broken lot.3. cutting trepan conducting wire at tag line, saw kerf in outer layer aluminum conductor Neatly, internal layer aluminum conductor can not be undermined.4. in inner conductor away from doing tag line at outer layer aluminum conductor fracture 10mm.5. in unlined aluminium Trepan conducting wire at guidewire markings line, saw kerf is neat, can not undermine steel core.After cutting out line.After@removes internal layer aluminum conductor, at steel core end Portion is bound with thin tied silk, prevents its broken lot.7. drawing central identification line, length of steel pipe tag line, impression mark respectively on aluminum pipe Know line, and indicates respectively.

4) poling verifies.Two wire terminations wear people's wire barrel, and inspection, check conducting wire are consistent with splicing sleeve tag line.

(4) it crimps.

1) aluminum stranded conductor conducting wire pressure sequence.When aluminum stranded conductor is crimped using hydraulic method, the crimping of aluminum pipe need to be only carried out.From connecting Pipe central identification line starts, and successively presses to port direction；After having pressed one end, then carry out other end splicing sleeve pressure.

2) compound wire pressure sequence.When steel-cored aluminium strand hydraulic method crimping operation, usually first the steel pipe of internal layer has been pressed Afterwards, then the crimping of outer layer aluminum pipe is carried out.When steel-cored aluminium strand crimps, when the connection type of internal layer steel core is different, outer layer The crimping sequence of aluminum pipe is also different.1. pressing mold sequence when steel-cored aluminium strand steel core docks, is opened from steel pipe central identification line Begin, successively presses to port direction；After having pressed one end, then carry out other end splicing sleeve pressure.Steel core using docking when, aluminum pipe with Steel pipe lap does not press, that is, forms aluminum pipe not pressure area.2. steel-cored aluminium strand steel core is using overlap joint

As shown in figure 38 (forcipressure conducting wire docks subsequent operations equipment):

One, it constructs

(1) Work tool, material

(1) Work tool: Press Plier, bolt clipper, hacksaw, wire brush, marking pen, fine sandpaper, steel tape, vernier caliper, wood Hammer, file, work number punching block etc..

(2) material: LGJ-35 conducting wire, aluminium aluminium hydraulic pressed connecting pipe, detergent, binding paper, cotton-wool, electric force compounded grease, rag, red lead powder Oil.

(2) safety requirements

(1) preventing tool is hurted sb.'s feelings, and when crimping, two people want close fit.(2) prevent conducting wire rebound hurt sb.'s feelings, tied silk is hurted sb.'s feelings.It disconnects One people holds line when conducting wire, a people cuts, by tied silk disk at roundel.(3) scene setting cover bar, nameplate.

(3) construction procedure

1, preparation

(1) Work tool is selected as required.(2) material is selected as required.

2, the course of work

(1) wire interconnecting piece point decontamination.(2) conductor wire end binding and poling.(3) punching block selects.(4) it crimps.

3, work termination

(1) visual examination, arrangement.(2) preservative treatment.(3) site clearing is withdrawn from the arena.

(4) technique requirement

Forcipressure connects shown in conducting wire schematic diagram.

(1) Work tool and material are selected as required, preparation and measure for construction safety before carrying out construction.

(2) forcipressure is only limitted to sectional area because of 240mm²And steel-cored aluminium strand below, aluminum stranded conductor connection.

(3) connecting pipeline cleaning requirement.Aerial condutor should remove aerial condutor surface and connecting tube before connecting with connecting tube The dirt of inner wall, removing length should be 2 times of coupling part.The aluminum contact surface of connecting portion should apply one layer of electric force compounded grease, Surface film oxide is removed with finer wire brush, retains coating and is crimped.

(4) wire clamp pressure overlap joint, which prints, wears back.After the completion of pipeline flush, the end for two conducting wires that will first connect is worn Enter in aluminium pressure pipe, its two ends conducting wire exposes a length of 20~50mm of pipe outer portion after poling.

(5) the pressing mold sequence of pincers pressure connection

1) the pressing mold sequence of LJ-35 aluminum stranded conductor pincers pressure.As shown, the pressing mold of pincers jewelling twisted wire is usually by one end nozzle Protrude into the sequence progress of the other end, it is desirable that after each molding connects sizing stabilization, then carry out the crimping of next mould.

2) the pressing mold sequence of LGJ-35 steel-cored aluminium strand.As shown, when carrying out the pincers press operation of steel-cored aluminium strand, Ying You The centre of splicing sleeve is carried out to both ends nozzle sequence.It is required that after the completion of the crimping of one end, then carry out the crimping of the other end.When crimping, Equally it is that each molding connects after sizing stablizes, then carries out the crimping of next mould.

3) the pressing mold sequence of LGJ-240 steel-cored aluminium strand.If figure is according to crimping sequence, press to one pressure mouth of a pressure mouth, It is every pressed one it is near coal-mine in, keep 30~60s of pressure, then press second mouth, pay attention to the depth of load mould.

(6) important technological parameters of pincers pressure connection.Size is shown in Table after pressure mouth number and pressure, such as GLJ-35/6 conducting wire, pincers pressure pressure Pressure mouth number after connecing should be 14, size a after pressure₁=34mm, a₂=42.5mm, a₃=93.5mm, D size should reach 17.5mm.

Pressure mouth number and size after wire clamp pressure crimping:

(7) after clamper tube pressure presentation quality inspection.By regulation, conducting wire will carry out presentation quality inspection after completing pincers pressure, The appearance of splicing sleeve after crimping is not allow for crackle, and surface is answered smooth.Splicing sleeve curvature after crimping is not greater than 2%, Having should be straightened when obvious bending, and the connecting tube after alignment forbids have crackle, and reclosing should be cut off when above-mentioned required standard is not achieved.Work Work terminates, and prints work number using punching block on splicing sleeve.

(8) after the completion of terminal pincers pressure, red lead powder oil should be applied at splicing sleeve both ends, to enhance the anti-corrosion energy of terminal Power should apply antirust paint when rolled tin falls off after pressure.

(9) power that holds after the connection of aerial condutor splicing sleeve should be less than former conducting wire guarantees calculating pull-off force 95%, connector Resistance should be not more than the resistance of equal length conducting wire.

(10) in a phase span, the insulated wire every that split-phase is set up only allows to have a load connector, and connector is away from conducting wire The distance of fixed point is no less than 0.5m.

As shown in figure 39 (direct-flow double bridge schematic circuit):

One, it constructs

(1) Work tool, material

(2) safety requirements

(1) scene setting cover bar, nameplate.(2) outdoor construction should carry out under good weather, and indoor construction should have photograph Bright, ventilation condition.(3) in detection process, it is ensured that personal safety.

(3) construction requirement and step

1, construction requirement

(l) according to task, Work tool, equipment are selected.

2 operating procedures

(a) working principle.By side resistance Rx and as the measuring resistance R for comparing arm_nEach four terminals, C_n1,、C_n2With C_x1,、C_X2It is their current terminal contact .P_n1、P_n2And P_x1、P_X2It is their potential contact, when wiring must make potential contact tight By resistance, otherwise current terminal contact will be unable to eliminate and reduce connection resistance and contact resistance to measurement knot on the outside of potential contact The influence of fruit.The current terminal C of measuring resistance_X2Between connected with the heavy gauge wire that resistance is R.R₁、R₂、R₃And R₄It is bridge arm electricity Resistance, resistance value is in 10 Ω or more.Suitably four arm resistances of selection, so that R₃/R₁=R₄/R₂, bridge balance (I can be made_G=0 When), then

Rx=R₂/R₁×R_n

I.e. measured resistance Rx is solely dependent upon ratio arm R₁And R₂Ratio and compare arm measuring resistance R_nResistance value, and with R, R₃And R₄It is unrelated.As wheatstone bridge, R₂、R₁Ratio be known as the ratio arm of electric bridge, R_nThe referred to as comparison arm resistance of electric bridge.Root Compare arm resistance value when adjusting bridge balance according to formula (P303-2), multiplied by the ratio of ratio arm, just obtains measured resistance Resistance value.

As shown in Figure 39, current terminal contact C_n1And C_x1It is connected in power branch, their connection resistance and contact resistance Power supply DC current size is only influenced, the balance of electric bridge is not influenced, i.e., is disappeared to the influence of measurement result.Potential contact P_n1、P_n2、P_x1、P_X2Connection resistance and contact resistance be connected in 4 bridge arms, and the connection resistance of 4 potential contacts and contact Resistance is inappreciable, this reduces this partial ohmic to measurement result influence compared with 4 arm resistances.Finally, Current terminal contact C_n2And C_X2It being series in heavy gauge wire R, their connection resistance and contact resistance is affected to R resistance value, but by Rx is not influenced in R, it is thus eliminated that influence of this partial ohmic to measurement result.

Concrete operations process according to State Grid Corporation of China Hubei Province Power Co., Ltd, " advise by power grid enterprises' production station skill operation Model " it executes.

Operating process is illustrated, distribution transformer stops power transmission operation:

Construction requirement and step:

One, construction requirement

1, Work tool is selected according to task.2, the setting requirements of site safety facility are correct, complete.Safe shading is set It blocks, and imports and exports suspension outward " from this disengaging in construction personnel！" nameplate, block surrounding hang outward " halt, high pressure danger Danger！" nameplate.3, tool inspection.1), insulating bar inspection.2), insulating glove inspection.4, work summary.

Two, operating procedure

1, power failure operation.Distribution transformer blackout procedures are as follows: first stop low pressure, after stop high pressure.

1) low-voltage comprehensive control cabinet shell electrical verification.After true no-voltage, low-voltage comprehensive control chamber door can be opened.2) low-pressure side In, low voltage switch is first disconnected, it is rear to disconnect low pressure master switch or pull open low voltage isolation switch.It 3), should be according to gas in high-pressure side As condition carries out.When windless condition, first pull open middle phase, after pull open both sides phase；When there is wind, middle phase is first pulled open, then draw Downwind side is opened, weather side is finally pulled open.4) if low-pressure side is the disconnecting switch with arc-control device, blackout procedures and distribution transformer Device primary side fuse operation requires consistent.

2, power transmission operates.Power transmission operation sequence is opposite with power failure operation program.

1) it before the power transmission of high-pressure side, checks, confirmation low tension switch is in open position.2) high-pressure side end of operation is listened attentively to, is sentenced Disconnected transformer station high-voltage side bus sound, send low-pressure side after normal again.3) low-pressure side end of operation is listened attentively to, judges transformer station high-voltage side bus sound, just Chang Hou, power transmission finish.

3, site clearing.

Three, points for attention

1, thunderstorm weather is forbidden to carry out transmission or not operation.2, equipment operation must be carried out by two people, one man operation, a people Monitoring.Before and after equipment operation, confirmation equipment accurate location is checked.3, it before fuse failure restores power transmission, ascertains the reason.When necessary, Distribution transformer is detected.4, restore power transmission operation, strict implement operation order, forbid on-load to push away, draw fuse or Disconnecting switch.5, listen attentively to distribution transformer operation sound, discovery operation sound it is abnormal when, should draw immediately (disconnected) open fuse or Breaker.6, low-pressure side transmission or not is carried out by circuit, the total disconnecting switch of low pressure or interruption maintenance line disconnecting switch operation handle Upper suspension " No switching on, route someone work！" nameplate, lock low-voltage comprehensive control chamber door.

Direct current method judges the polarity of current transformer:

One, Work tool, material

1, Work tool: screwdriver, DC ammeter or pointer multimeter, electrician's personality kit.2, material: monopole is opened Pass, conducting wire, 1.5V battery.3, equipment: low-voltage current mutual inductor.

Two, safety requirements

1, the range that should be noted that instrument when using instrument prevents electric current is excessive from burning out gauge outfit.2, using the work for having insulation handle Tool, and wear insulating glove, it is necessary to wear caftan work.3, it should be noted that correct differentiation current transformer first and second when wiring Winding.Three, operating procedure and requirement

1, operating procedure

1) wiring diagram, is drawn.2) material, is selected, checks meter.3) circuit, is connected.4) circuit, is checked.5), by general-purpose The change-over switch of table is placed on DC current or voltage gear.6) it, closes a switch, observes the deflection of multimeter.7) it, turns on the switch, Observe the deflection of multimeter.8) it, draws a conclusion, judges polarity, mark polarity.9) job note, is filled in.2, operation requires

1) graphical symbol in circuit diagram meets regulation.Elementary diagram is as shown in Figure 6.2) cell voltage selects.3) table Count the selection of gear.

The panel of the utility model cabinet body is referring to attached drawing, and outline dimension of cabinet: cabinet is long: 2200cm；Cabinet is high: 935cm；Cabinet It is wide: 960cm.

This cabinet body is by stainless steel faceplate and stainless steel square tube welding fabrication, using standardized designs, constitutional detail versatility By force, high mechanical strength.

Cabinet body surface is marked according to skill operation classification of the items, beautiful and generous.

Claims

The work skill operation training cabinet 1. a kind of rural power grids distribution is done business, including cabinet body, the bottom surface of cabinet body are equipped with 3 or more walkings Wheel；It is characterized by: the front of cabinet body is equipped with the first tool drawer (1), the second tool drawer (2), the first Tool Cabinet (3), the second work Have cabinet (4)；

Be equipped with behind cabinet body instrument and meter cabinet (5), distribution transformer stop power transmission operating device (6), dedicated transformer terminal and Installation connection circuit (7), the direct current method of electric energy metering device judge the principle of polarity connection circuit (8), electronic of current transformer Positive and negative control circuit installation circuit (9) of machine, the single-phase steering controling circuit of two places operation motor install circuit, with overload protection The single-phase steering controling circuit of motor installs circuit；Reversible crawl service meter control circuit installation circuit and public transformation The installation of device concentrator, debug circuit (10), single-phase, three-phase intelligent table installation, commissioning device (11) and three-phase socket (12).
The work skill operation training cabinet 2. a kind of rural power grids distribution according to claim 1 is done business a, it is characterised in that: left side for cabinet body Side is equipped with distribution transformer insulation measurement equipment (13), distribution transformer direct current resistance m easurem ent equipment, using ground connection electricity Hinder tester measuring transformer ground resistance, distribution transformer tap switch adjustment equipment and station (14).
The work skill operation training cabinet 3. a kind of rural power grids distribution according to claim 1 is done business, it is characterised in that: the right side of cabinet body Side is equipped with grounding copper bar (15), conducting wire in the fixed equipment (16) of pin insulator inverted draw cut, conducting wire in pin insulator neck slot Fixed equipment (17), NUT wire clamp production bracing wire (18), wedge type clamp production bracing wire, 1-10KV power cable insulation resistance survey Amount equipment (19), 1-10KV cable hot shrinkage terminal making apparatus, hydraulic method conducting wire docking subsequent operations equipment, forcipressure are led Line docks subsequent operations equipment.
The work skill operation training cabinet 4. a kind of rural power grids distribution according to claim 1 or 3 is done business, it is characterised in that: described The right side of cabinet body, which is equipped with, to be judged the correctness of three-phase and four-line electric energy metering device wiring with disconnected platen press, judges three-phase with the method for short circuit The correctness of four line electric energy metering device wiring, the correctness that three-phase and four-line electric energy metering device wiring is judged with voltage cross method Equipment.