CN2158585Y

CN2158585Y - Composition type electricity energy measuring cabinet

Info

Publication number: CN2158585Y
Application number: CN 93201870
Authority: CN
Inventors: 余永宽
Original assignee: SHANGRAO PREFECTURE ELECTRIC POWER INDUSTRY BUREAU
Current assignee: SHANGRAO PREFECTURE ELECTRIC POWER INDUSTRY BUREAU
Priority date: 1993-01-16
Filing date: 1993-01-16
Publication date: 1994-03-09
Anticipated expiration: 2003-01-16

Abstract

The utility model discloses a combined type electric energy measuring cabinet. Compared with the PJ1-0 type electric energy measuring cabinet, the utility model comprises two identical instrument division tanks, a current transformer division tank and a bus bar back division tank, wherein, the bus bar back division tank is composed of a primary bus bar and a current transformer connected with the primary bus bar. The division tanks can be disassembled, dismounted, connected and fixed by screw rods, and wire inlet holes, wire outlet holes and test connection sheets are additionally arranged on the division tanks. The commonality and the practicability are increased, the division tanks can be chosen and formed into a wall hanging type electric energy measuring cabinet, and the utility model can carry out the measurement and the meterage under the condition of the parallel operation or the separate operation of two transformers.

Description

Composition type electricity energy measuring cabinet

The utility model relates to a kind of combined electric energy metrical cabinet in the indoor power distribution device.

Existing PJ1-D type low-voltage electric energy metering is to cause wiring error whole nation special equipment unified design, that be applicable to indoor metering for fear of the user because of numerous different metering methods in oneself installing and removing and testing.This cabinet shape requirement length and width height is the 900x600x2140(millimeter), require to install side by side with low-voltage alternating-current BSL and PGL cabinet.This cabinet is used to exchange 380V/220V, rated current 25-600A, implementation or does not carry out the industrial cousumer of power rate adjustment and general user's electric energy metrical.This cabinet adopts to be opened separately and the branch box structure and the totally-enclosed steel structure of the lead sealing that locks, and has instrument branch mailbox and its underpart iron gate air switch branch mailbox that door is provided with large windows.In the cabinet back panel and around the fixedly connected once bus of shell and current transformer that is attached thereto and bus pillar, be row's shape structure, integral body can be considered branch mailbox behind the bus.This cabinet has following problem in making and using: the cabinet top has an empty van not utilize, and only adorns two kilowatt-hour meters on the portable plate in the instrument branch mailbox of middle part and is idle on the fixed head, and the lower switches branch mailbox is also only adorned two switch member.Walk abreast or move respectively and then will buy two above-mentioned metering cabinets if user transformers is two, cause expensive land used and the space wasted again.The user has many different electric energy metrical modes, is difficult in the manufacturer production adapt to.In addition, be to fixedly connected with straight-through current transformer in the bus branch mailbox, it is very inconvenient to make field test will tear bus open, advance wire hole only sidepiece and top have three not enough.

The utility model purpose provide a kind of do not change former cabinet shape and only to its inner space and circuit change with increase the versatility practicality and can decompose the combined electric energy metrical cabinet of selecting for use.

The purpose of this utility model can so reach: be provided with identical two instrument branch mailboxes that are arranged above and below at the cabinet middle part, indication electric meter and voltage indicator lamp are all arranged on its fixed head and the portable plate.The cabinet top is provided with the current transformer branch mailbox, and it is that one is fixedlyed connected with last instrument branch mailbox.Be detachable between branch mailbox and each branch mailbox integral body of cabinet front behind the bus at the cabinet back side and be fixedly connected up and down between the two instrument branch mailboxes, down between instrument branch mailbox and the bottom switch branch mailbox, with detachable screw rod nut.On connection bus of current transformer behind bus in the branch mailbox test connection sheet is housed.

The utility model is compared former PJ1-D type electric energy metrical cabinet and is had following advantage: owing to increased indicating instrument and instrument transformer branch mailbox, the user that manufacturer requires difference if do point revise promptly applicable, when single cabinet also is useful in low-pressure side electric energy metrical mode two parallel operation of transformers or respectively the electric energy metrical of operational mode use.The trouble of taking out stitches when field-checking is removed in the setting of test connection sheet from is as long as promptly make contact the verification instrument transformer after low tension switch disconnects.Electric meter can expand electric current, voltmeter to and add that the bus indicator light makes that the Presentation Function of electric current and voltage data and bus power on/off has been arranged from electric energy meter.Different user can be selected for use separately or make the wall-hanging metering cabinet after the apolegamy and use from four branch mailboxes.

Following combination (accompanying drawing) embodiment is described further:

Fig. 1 is the combined electric energy metrical cabinet of the utility model (hereinafter to be referred as this cabinet) front D structure figure.

Fig. 2 is this cabinet electric device distribution map.

Fig. 3 is this cabinet electric device distribution left side view.

Fig. 4 is the electric device connection layout of branch mailbox behind this cabinet bus.

Fig. 5 is test connection chip architecture figure on this cabinet bus.

Fig. 6 is this cabinet main electrical scheme pattern and metering electrical schematic diagram when two parallel operation of transformers.

Fig. 7 is this cabinet air switch branch mailbox electric device distribution map when two transformer operations.From Fig. 1,2, this cabinet by bus after branch mailbox 1, identical

instrument branch mailbox

2,3 and air switch branch mailbox 4 form, and between be connected and fixed one with detachable screw rod.The cabinet top establish current transformer branch mailbox 2.1 and with instrument branch mailbox 2 for being fixed as one.The big glass 1.1 of Men Shangyou of (hereinafter to be referred as case 1,2,2.1,3,4) case 2,2.1,3, case 4 is driven iron gate 1.3 for two, lead sealing sieve bar 1.2 that locks on it, and open separately.Case 2.1,2,3,4, height be 270 millimeters, 630 millimeters, 630 millimeters and 610 millimeters, the wide of case 1 is 230 millimeters.From Fig. 2,3,2.1 6 current transformers 21.2 are arranged on the interior portable plate 5, case 2 is size two instrument branch mailboxes identical with structure with case 3, associating terminal box 9.1,9.2 is arranged on its portable plate 6, secondary lead wires hole 11 and 6 electric energy meters 17.7,17.8 are arranged, 6 electric currents (or voltage) table 8.1,8.2 is arranged on its fixed

head

7,6 phase voltage indicator lights 10 are arranged.From Fig. 3,4, in case 1, promptly there is bus 19 of aluminium row at backrest face place in this cabinet, and the test connection sheet 20 that links to each other with bus pillar 16, electric current mutual inductance 21.1 and two ends thereof is connected to circuit, have 12 instrument transformers in conjunction with Fig. 4,12 test connection sheets and 16 bus pillars, above-mentioned these electric devices become a plane body in case 1, and, in Fig. 3, distinguish with thin dashed line in

case

2,3,4 back.From Fig. 3, in conjunction with Fig. 1, this descends bilateral symmetry to be distributed with everywhere

wire hole

15,18 up and down cashier's office in a shop, and from Fig. 5, test connection sheet 20 is to be fastened on the aluminium row bus 19, on the crooked line sheet spare 22 wiring hole 23 is arranged.From Fig. 6, i.e. No. 1 No. 2 paired runnings of two transformers (SL7 serial transformer), use the combined electric energy metrical cabinet of a playscript with stage directions to measure electric energy, electric current, the voltage of operating two transformers respectively, wherein metering method is the packing of lamp power, carries out the power factor (PF) examination, and every street lamp capacity is greater than the multichannel lamp source of 100A.No. 1 No. 2 the main transformer high-pressure side can connect same feed line of power supply or two different feeder lines.Become low-pressure side from No. 1, No. 2, the 380/220V bus is introduced this cabinet (see figure 4) to bus place of left and right sides from cabinet top entrance hole 1.5, seal in power packages electric current mutual inductance 21.1, secondary circuit lead-in wire is through in the two associating terminal boxes 9.1,9.2 two of the left side up and down of (see figure 2)s, more meritorious, the reactive energy-meter 17.1,17.2,17.4,17.5 of each two dynamic measurement of the left side in 17.7, the 17.8 liang of groups of electric energy meter in the instrument branch mailbox 2,3.Bus of lighting loop seals in illumination group current transformer 21.2 with flexible conductor by the metering method wiring, secondary circuit lead-in wire through two on associating terminal box 9.1,9.2 the right again in 17.7,17.8 liang of groups of ammeter the illumination in each the right measure active electric energy meter 17.3,17.6.No. 1 No. 2 change power are measured table 8.1,8.2 places of phase load electric current on

case

2,3 fixed heads and are respectively adorned 3 alternating current ammeters, and mutually electric indicator light 10 parts are respectively adorned 3 lamps to show two transformer phase voltages.Voltage measurement and three-phase isolation switch installation mode of connection and Fig. 2 raising middle flask 4 are different.From Fig. 7, respectively adorn two alternating voltage ammeters 24.1 and 24.3, two power supply indicators 24.4 of 24.2, two change over switches about air switching box is interior.Indicate desired principle to handle by shunt voltage.But four holes outlet and link to each other respectively simultaneously up and down about power and this cabinet of bus outlet method of illumination with bus of low-tension distribution board.At last, as embodiment, Instruments Authorized

case

2,3 is formed wall-hangings and is used, and one time lead is connected with instrument transformer the case 2.1 from 1.5 turnover of cabinet top entrance hole, and with instrument box in 6 electric energy meters be connected work.In addition, if need metering comprehensive power distribution function, can cooperate instrument box 2 and switch-box 4.Equally, enter as an above-mentioned lead, the electric device of switch branch mailbox can connect isolating switch 13, air switch 14 and single-phase disconnecting link 12 as shown in Figure 2.

Claims

1, a kind of combined electric energy metrical cabinet, top is the instrument branch mailbox that electric energy meter is housed, the bottom is for being equipped with disconnecting link, isolating switch and air switch branch mailbox, the fixedly connected once bus in inner casing place reaches with current transformer that is connected and bus pillar and branch mailbox after being the bus of arranging the shape structure around the interior back panel of cabinet, into wire hole is arranged at cabinet top and bottom, cabinet is totally-enclosed steel structure, instrument, switch branch mailbox are large windows door and iron gate, and open separately and seal up, of the present utility model being characterised in that:

(a) up and down two identical instrument branch mailboxes are arranged, all have in addition on its fixed head, on the portable plate indication electric meter, and indicator light, the top of going up the instrument branch mailbox be that the cabinet top also is fixedly connected with a current transformer branch mailbox;

(b) up and down two instrument branch mailboxes, down between instrument branch mailbox and the switch branch mailbox, can decompose between branch mailbox and each branch mailbox integral body of cabinet front behind the bus and be connected to a fixed with detachable screw rod;

(c) on connection bus of the current transformer in the branch mailbox test connection sheet is housed behind the bus.

2, electric energy metrical cabinet according to claim 1, it is characterized in that behind bus the branch box top have two places side by side entrance hole, its both sides up and down symmetry wire hole is everywhere arranged, on the current transformer branch mailbox of top an entrance hole is arranged.

3, electric energy metrical cabinet according to claim 1 is characterized in that 6 electric energy meters are arranged on the portable plate in the instrument branch mailbox, 6 voltages or ammeter are arranged on the fixed head, and 6 instrument transformers are arranged in the current transformer branch mailbox.