CN103941218A - On-site general load tester for newly-mounted electric energy meter - Google Patents

On-site general load tester for newly-mounted electric energy meter Download PDF

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Publication number
CN103941218A
CN103941218A CN201410211923.1A CN201410211923A CN103941218A CN 103941218 A CN103941218 A CN 103941218A CN 201410211923 A CN201410211923 A CN 201410211923A CN 103941218 A CN103941218 A CN 103941218A
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China
Prior art keywords
casing
electric energy
energy meter
phase
contactor
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CN201410211923.1A
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Chinese (zh)
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CN103941218B (en
Inventor
杨文博
冯玉花
陈兴莲
张恒华
张斌
焦诗育
陈继开
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莱芜鲁能开源集团电器有限公司
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Priority to CN201410211923.1A priority Critical patent/CN103941218B/en
Priority claimed from CN201610339519.1A external-priority patent/CN105785314B/en
Publication of CN103941218A publication Critical patent/CN103941218A/en
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Publication of CN103941218B publication Critical patent/CN103941218B/en

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Abstract

The invention discloses an on-site general load tester for a newly-mounted electric energy meter. The on-site general load tester for the newly-mounted electric energy meter comprises a cabinet body, a cabinet door and wheels and is characterized in that the inside of the cabinet body is provided with a data display instrument, a current transformer, an AC (alternate current) contactor, a thermal resistor, a motor and a fan, the top of the cabinet body is provided with operation starting shift buttons. By providing different on-site loads through the thermal resistor, the motor and the fan and through the different shift options of the operation starting shift buttons, the on-site general load tester can test transformer low-voltage distribution devices of different capacities. The on-site general load tester for the newly-mounted electric energy meter can perform on-site load testing on the reactive power compensation device of the electric energy meter of a distribution device which is newly mounted for an electricity customer after power supply checking procedures are completed, and by means of on-site testing, can effectively guarantee electric energy measurement and the normal operation of the reactive power compensation device, reduce the workload of measuring and testing personnel and improve the economic benefits of enterprises.

Description

The on-the-spot Universal load tester of new clothes electric energy meter

Technical field

The present invention relates to Electric Energy Metering Technology field, specifically the on-the-spot Universal load tester of a kind of new clothes electric energy meter.Be mainly used in newly going up on electricity consumption client power distribution equipment, when power transmission has been checked and accepted after formality, according to user transformers capacity, electric energy meter, reactive compensation controlling device are carried out to on-the-spot load testing, guarantee that electric energy meter, reactive compensation controlling device normally move.

Background technology

For the electricity consumption client on new, after installation power distribution equipment, examination, need to verify whether run well to the electric energy meter after power transmission, reactive compensation controlling device at the scene.Because most of users complete after power transmission program, there is no concrete load running, cause scene to verify electric energy meter, reactive compensation controlling device.Like this, will wait until after user is put into production and again carry out verification to scene, reduce work efficiency.

Known by retrieving, in order to reach the object of Site Detection, what have is added in load in the casing of electric energy meter, but whether can only detect wiring correct, the electric capacity of the employing parallel connection also having is as the connection terminal of live load access three-phase supply circuit and electric energy meter tail, as disclosed in Chinese patent CN202649459U " electric energy meter field-checking live load device ", with the electric capacity of three groups of parallel connections as live load, access respectively three-phase power line by load fling-cut switch, the mutual inductor of three-phase power line access user electric energy meter, one end access voltage table and pilot lamp that three-phase power line is connected with user transformers low-pressure side, this " electric energy meter field-checking live load device ", when use, also to be used in conjunction with electric energy meter on-site calibrator, whether and it is correct to detect the wiring of user's electric energy meter.Have not yet to see on new on electricity consumption client power distribution equipment, when power transmission has been checked and accepted after formality, whether correctly the wiring of user's electric energy meter can not only be detected, and the report of on-the-spot load testing device can be carried out to the electric energy meter of power distribution equipment, reactive compensation controlling device.

Summary of the invention

The object of the present invention is to provide a kind of on new on electricity consumption client power distribution equipment, when power transmission has been checked and accepted after formality, whether correctly can not only detect the wiring of user's electric energy meter, and electric energy meter to power distribution equipment, the on-the-spot Universal load tester of new clothes electric energy meter that reactive compensation controlling device also can carry out on-the-spot load testing.

In order to reach above object, the technical solution adopted in the present invention is: the on-the-spot Universal load tester of this new clothes electric energy meter, comprise casing, chamber door and roller, the frame of chamber door and casing is rotationally connected, roller is located at the bottom of casing, it is characterized in that: the epicoele inside of described casing is provided with PA/PV digital display meter, the display screen of PA/PV digital display meter stretches out from the epicoele front panel square opening of casing; In the casing epicoele front panel of a side of PA/PV digital display meter, be provided with successively four run indicator; The endoceliac rear wall of described case middle and upper part is installed three current transformers, four A.C. contactors, connecting terminal blocks and the zero-emission of confluxing successively, the zero-emission of confluxing is stretched out from the rear wall of casing, a side at connecting terminal block is provided with QF1 automatic control switch, QF1 automatic control switch stretches out from the rear wall of casing, one end of three current transformers is connected with 1,3,5 pin of PA/PV digital display meter outgoing line side respectively, after the parallel connection of three current transformer other ends, connect 6 pin of PA/PV digital display meter and connect to conflux simultaneously and arrange, the rear wall of arranging from casing that confluxes stretches out; Four described A.C. contactors, three input end wires of each A.C. contactor access three-phase stube cable L1, L2, L3 respectively, wherein the output terminal of first three A.C. contactor is connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block 11 successively, and the output terminal of a rear A.C. contactor is connected with micro ac motor by electrothermal relay; On the roof of casing, be provided with four operation startup gears and select button and four operation stop buttons, start the selection of gear selection button by four operations, realize the transformer capacity that corresponding new upper electricity consumption client power distribution equipment uses; It is the 1-4KM of control action in four A.C. contactors that described four operations start gear selection button, accesses IFR electrothermal relay on the circuit of 4KM simultaneously; Described micro ac motor is arranged on the left side, middle and lower part in casing by support, is provided with fan, the louver-type ventilation mouth of fan alignment box body sidewall at the axle head of micro ac motor; Right side, middle and lower part fixed installation thermal resistor in described casing, the input end of thermal resistor is connected with 1,3,5,7,9,11,13,15,17 three-phase stube cable L1 of connecting terminal block 11, the interface of L2, L3 successively, its output termination zero-emission of confluxing, the zero-emission of confluxing accesses four operations again and starts gear selection button, be 1-4KM, like this, provide on-the-spot load by the acting of micro ac motor and fan and the energy consumption of thermal resistor; After selecting the input end of button and four operation stop buttons to connect, four described operation startup gears access L1 phase and N stube cable by QF1 automatic control switch again.

The present invention also implements by following measure: described thermal resistor is made up of nine heating resistor 1-9R, nine heating resistors are divided into three groups, every group three, access stube cable L1, L2, L3 by connecting terminal block and A.C. contactor respectively, for thermal resistor is for electrical heating; Described thermal resistor and micro ac motor are respectively by four A.C. contactor controls.

Four operations of described A.C. contactor control action start gear and select button, and 1-4KM is connected with the output terminal of thermal resistor simultaneously.

Described PA/PV digital display meter, current transformer, A.C. contactor, connecting terminal block, the zero-emission of confluxing, QF1 automatic control switch, conflux arrange, electrothermal relay, thermal resistor be existing accessory, can directly buy from market

Beneficial effect of the present invention is: the on-the-spot loading tester of this new clothes electric energy meter, can be on newly on electricity consumption client power distribution equipment, when power transmission has been checked and accepted after formality, electric energy meter, reactive compensation controlling device to power distribution equipment carry out on-the-spot load testing, by in power transmission on-the-spot test, can effectively ensure that electric energy metrical, reactive compensation controlling device normally move, reduce metering testing staff's workload, improve the economic benefit of enterprise.

Brief description of the drawings

Fig. 1 is assembly structure front-view schematic diagram in casing of the present invention.

Fig. 2 is casing top structure schematic top plan view of the present invention.

Fig. 3 is circuit theory schematic diagram of the present invention.

In figure: 1, casing; 2, chamber door; 3, roller; 4, PA/PV digital display meter; 5, run indicator; 6, support; 7, micro ac motor; 8, fan; 9, current transformer; 10, A.C. contactor; 11, connecting terminal block; 12, the zero-emission of confluxing; 13, thermal resistor; 14, IFR electrothermal relay; 15, operation starts gear selection button; 16, QF1 automatic control switch; 17, operation stop button; 18, conflux and arrange.

Embodiment

Make the present invention with reference to Fig. 1, Fig. 2, Fig. 3.The on-the-spot Universal load tester of this new clothes electric energy meter, comprise casing 1, chamber door 2 and roller 3, chamber door 2 is rotationally connected with the frame of casing 1, roller 3 is located at the bottom of casing 1, it is characterized in that: the epicoele inside of described casing 1 is provided with PA/PV digital display meter 4, the display screen of PA/PV digital display meter 4 stretches out from the epicoele front panel square opening of casing 1, can directly observe like this demonstration data of PA/PV digital display meter 4, in the casing 1 epicoele front panel of a side of PA/PV digital display meter 4, be provided with successively four run indicator 5, the on-the-spot load testing of transformer capacity that can be corresponding different shows, rear wall middle and upper part in described casing 1 chamber is installed three current transformers 9 successively, four A.C. contactors 10, connecting terminal block 11 and the zero-emission 12 of confluxing, the zero-emission 12 of confluxing is stretched out from the rear wall of casing 1, a side at connecting terminal block 11 is provided with QF1 automatic control switch 16, QF1 automatic control switch 16 stretches out from the rear wall of casing 1, one end of three current transformers 9 respectively with 1 of PA/PV digital display meter 4 outgoing line sides, 3, 5 pin are connected, after three current transformer 9 other end parallel connections, connect 6 pin of PA/PV digital display meter 4 and connect to conflux simultaneously and arrange 18, conflux and arrange 18 and stretch out from the rear wall of casing 1, four described A.C. contactors 10, three input end wires of each A.C. contactor 10 access three-phase stube cable L1, L2, L3 respectively, wherein the output terminal of first three A.C. contactor 10 is connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block 11 successively, the output terminal of a rear A.C. contactor 10 is connected with micro ac motor 7 by electrothermal relay 14, for micro ac motor 7 provides power supply, on the roof of casing 1, be provided with four operation startup gears and select button 15 and four operation stop buttons 17, start the selection of gear selection button 15 by four operations, realize the transformer capacity that corresponding new upper electricity consumption client power distribution equipment uses, it is the 1-4KM of control action in four A.C. contactors 10 that described four operations start gear selection button 15, accesses IFR electrothermal relay 14 on the circuit of 4KM simultaneously, described micro ac motor 7 is arranged on the left side, middle and lower part in casing 1 by support 6, is provided with fan 8 at the axle head of micro ac motor 7, and fan 8 is aimed at the louver-type ventilation mouth of casing 1 sidewall, can make the interior heat radiation of casing 1 by fan 8, right side, middle and lower part fixed installation thermal resistor 13 in described casing 1, the input end of thermal resistor 13 is connected with 1,3,5,7,9,11,13,15,17 three-phase stube cable L1 of connecting terminal block 11, the interface of L2, L3 successively, its output termination zero-emission 12 of confluxing, the zero-emission 12 of confluxing accesses four operations again and starts gear selection button 15, be 1-4KM, like this, provide on-the-spot load by the acting of micro ac motor 7 and fan 8 and the energy consumption of thermal resistor 13, four described operations start gear and select to access L1 phase and N stube cable by QF1 automatic control switch 16 again after the input end series connection of button 15 and four operation stop buttons 17.

As improvement of the present invention: described thermal resistor 13 is made up of nine heating resistor 1-9R, nine heating resistors are divided into three groups, every group three, access stube cable L1, L2, L3 by connecting terminal block 11 and A.C. contactor 10 respectively, for thermal resistor 13 is for electrical heating; Described thermal resistor 13 and micro ac motor 7 are controlled by four A.C. contactors 10 respectively.

Four operations of described A.C. contactor 10 control actions start gear and select button 15, and 1-4KM is connected with the output terminal of thermal resistor 13 simultaneously.

Described PA/PV digital display meter 4, current transformer 9, A.C. contactor 10, connecting terminal block 11, the zero-emission 12 of confluxing, QF1 automatic control switch 16, conflux arrange 18, electrothermal relay 14, thermal resistor 13 be existing accessory, can directly buy from market.

Use time of the present invention, carry out according to following steps:

1, the case change that checks user (comprises high-pressure side, transformer, distribution low-voltage outlet device, electric energy meter and reactive compensation controlling device) installed after, the present invention is positioned over to new user kit to be become near distribution low-voltage outlet device, with three-phase and four-line connection cable L1, L2, L3, N uses a cable to be connected with distribution low-voltage outlet device isolating switch, inlet wire side wire is connected with user's low-voltage outlet device isolating switch, outgoing line side is connected with four A.C. contactors 10 by the connection terminal on electricity consumption loading tester, control four A.C. contactors 10 with QF1 automatic control switch 16, use in addition a ground wire that the connection terminal on electricity consumption loading tester is carried out to good ground connection.

2, after all cables have connected, according to user's power distribution equipment transformer capacity, control according to 100KVA, 200KVA, 315KVA, 400KVA, 500KVA, six gears of 630KVA, in end of incoming cables of the present invention, electricity consumption loading tester is set, shows the electrical parameters such as load current, voltage, power.Close after total power switch, check on-the-spot transformer capacity, then select gear, test.

3, start gear according to four operations of Capacity Selection A.C. contactor 10 control actions of user transformers and select button 15, the i.e. gear of 1-4KM: can divide six kinds of situations, in the time that the capacity of transformer is 100KVA, select the 1KM in A.C. contactor 10 to control gear, press operation and start gear and select first in button 15, now, only control first group of 1-3R resistance heated of heating resistor 13, heating resistor of every phase, completes load operation; In the time that the capacity of transformer is 200KVA, select the 2KM in A.C. contactor 10 to control gear, press operation and start second in gear selection button 15, now only control second group of 4-6R resistance heated of heating resistor 13, heating resistor of every phase, completes load operation; In the time that transformer capacity is 315KVA, select the 3KM in A.C. contactor 10 to control gear, press operation and start the 3rd in gear selection button 15, now only control the 3rd group of 7-9R resistance heated in heating resistor 13, heating resistor of every phase, completes load operation; In the time that transformer capacity is 400KVA, select 1KM, 2KM in A.C. contactor 10 to control gear, press operation starts gear and selects first and second in button 15 simultaneously, now control first group and second group of 1-6R resistance heated in heating resistor 13, two heating resistors of every phase, complete load operation; In the time that transformer capacity is 500KVA, select 2KM, 3KM in A.C. contactor 10 to control gear, press operation simultaneously and start second and the 3rd in gear selection button 15, now only control second group and the 3rd group of 4-9R resistance heated in heating resistor 13, two heating resistors of every phase, complete load operation; In the time that transformer capacity is 630KVA, select 1KM, 2KM, 3KM in A.C. contactor 10 to control gear, press simultaneously operation start gear select in button 15 first, second and the 3rd, now all control three groups of 1-9R resistance heated in heating resistor 13, three heating resistors of every phase, complete maximum load running;

4, in the time of load operation, the load electrical parameter of moving, reaching PA/PV instrument 4 by three current transformers 9 shows, show every phase voltage, electric current, applied power, effective power factor, reactance capacity and frequency, by the Data Comparison on above demonstration data and onsite user's electric energy meter, its data are close or consistent, can judge that the wiring of field electric energy measurement table is correct, after determining that the wiring of field electric energy measurement table is correct, the reactive factor that can show by electric energy meter, compare with the data of reactive compensation controlling device, judge that reactive compensation controlling device shows the correctness of power factor, in the time of needs low value reactive factor, by controlling the 4KM gear in A.C. contactor 10, press operation and start the 4th in gear selection button 15, start micro ac motor 7 and fan 8 turns round, obtain the reactive power value needing, determine to need reactive compensation controlling device whether to move, also can judge the accuracy of wiring correctness and the device of reactive compensation controlling device according to reactive compensation values, in the time starting thermal resistor 13 and micro ac motor 7 and fan 8 according to each control section and rotate, to drive electric energy meter on user's power distribution equipment, reactive compensation controlling device running, and can be by contrasting with the data of PA/PV digital display meter 4, by starting micro ac motor 7 and fan 8, can record the reactive factor of load, and can judge the ruuning situation of user's reactive compensation controlling device, thereby reach the test purpose whether electric energy meter of power distribution equipment is normally moved, so just, can realize the electric energy meter of multiple transformer gear, reactive compensation controlling device normally moves use.

5,, then according to electric company's requirement, the starting power factor of reactive compensation controlling device controller is set to (being generally 0.9); The self-actuated controller of reactive compensation controlling device is arranged on to automated location, and reactive compensation controlling device will carry out automatic cycle switching according to supply load power factor.Comparing through PA/PV digital display meter of the present invention 4 with user's electric energy meter, reactive compensation controlling device, when electric energy meter shows that the display parameter of numerical value and PA/PV digital display meter 4 are mutually close or when consistent, illustrate that electric energy meter wiring is accurate; When showing the controller of reactive factor numerical value and reactive power compensator, electric energy meter shows that the display parameter of power factor and PA/PV digital display meter 4 are close or when consistent, illustrate that reactive compensator controller is qualified; According to the reactive factor that starts micro ac motor 7 and fan 8 and show, and electric company requires general power supply the factor is lead to consumer's meritorous service value to be not less than 0.9 requirement, observe the action situation of reactive compensation controlling device, if reactive compensation controlling device regular event, after reactive compensation controlling device drops into, reactive compensation controlling device shows higher than 0.9 or while being the power factor of negative value, illustrates that reactive compensation controlling device wiring is accurate.In the time that user's electric energy meter shows " reverse power ", illustrate that electrical network phase sequence is contrary with user's electric energy meter wiring phase sequence, take following several method to process to this: 1, change the wiring of user's electric energy meter, generally A phase and the wiring of C phase are exchanged; 2, from step down side, A phase and the wiring of C phase are exchanged; 3, from high pressure inlet wire side cable, A phase and the wiring of C phase are exchanged; When after starting load micro ac motor 7 and fan 8, user's reactive compensation controlling device shows that the display parameter of power factor and PA/PV digital display meter 4, user's electric energy meter show when data are inconsistent, illustrate that wiring is wrong; Need to carry out the on-the-spot line inspection: whether the access that 1, checks secondary singal line is correct, whether according to the requirement access signal of controller; 2, check the whether on request access of voltage signal line of controller; 3, the consistance of wire of inspection and signal transformer.When starting with after electric loading micro ac motor 7 and fan 8, user's reactive compensation controlling device shows that power factor and electricity consumption load P A/PV digital display meter 4, electric energy meter show data consistent, but in the time not reaching electric company's requirement power factor, reactive compensation controlling device should carry out switching do action.If akinesia, illustrates and have fault, need to carry out the on-the-spot line inspection: first check according to above-mentioned three steps, then check secondary protective element, as protection fusible core of fuse is unkitted or fuses, whether protection air switch is in co-bit.Correct according to check result.

Embodiment 1

On Dec 1st, 2013, the phase transformation of Laiwu City nine Jia Jingujianchang (comprises high-pressure side, transformer, distribution low-voltage outlet device, electric energy meter and reactive compensation controlling device) all install, transformer capacity is 100KVA, the present invention is positioned over to case to be become near distribution low-voltage outlet device, with three-phase and four-line connection cable L1, L2, L3, N uses a cable to be connected with distribution low-voltage outlet device isolating switch, inlet wire side wire is connected with user's low-voltage outlet device isolating switch, outgoing line side is connected with four A.C. contactors 10 by the connection terminal on electricity consumption loading tester, control four A.C. contactors 10 with QF1 automatic control switch 16.Use in addition a ground wire that the connection terminal on electricity consumption loading tester is carried out to good ground connection.All cables have connected rear three-phase and four-line stube cable L1, L2, L3, the N of using and have used a cable to be connected with this factory's low-pressure line-outgoing isolating switch, inlet wire side wire is connected with user's power distribution equipment, outgoing line side is connected with four A.C. contactors 10, controls four A.C. contactors 10 with QF1 automatic control switch 16.After all cables have connected, press the 1KM control gear of selecting in A.C. contactor 10, press first in operation startup gear selection button 15, now, only control first group of 1-3R resistance heated of heating resistor 13, heating resistor of every phase, completes load operation.Now, on electricity consumption load P A/PV digital display meter 4 digital display meters, show:

Three-phase firewire voltage U value: 1,235.3 V; 2,232.9 V; 3,233.4 V

Average voltage U value (Avg): 233.8

Three-phase firewire electric current I value: 1,4.24 A; 2,4.29 A; 3,4.28 A

Average current I value (Avg): 4.27

Frequency (FPEO): 50.00 Hz

Three-phase activity coefficient (COS): 1,1.00; 2,1.00; 3,1.00

Average power factor (Avg): 1.00

Three phase power (P): 1,0.99 KW; 2,0.99 KW; 3,0.99 KW

Average power (Avg): 0.99

On user's electric energy meter, show data:

Three-phase voltage U value: A, 235.3 V; Viewing area code: 02.01.01.00

B, 232.9 V; Viewing area code: 02.01.02.00

C, 233.4 V; Viewing area code: 02.01.03.00

Three-phase current I value: A, 4.24 A; Viewing area code: 02.02.01.00

B, 4.29 A; Viewing area code: 02.02.02.00

B, 4.29 A; Viewing area code: 02.02.02.00

C, 4.28 A; Viewing area code: 02.02.03.00

Forward active power:

Meritorious general power: 2.97KW; Code: 02.03.00.00

Three phases active power: A, 0.99 KW; Code: 02.03.01.00

B, 0.99 KW; Code: 02.03.02.00

Active power: C, 0.99 KW; Code: 02.03.03.00

Total power factor (COS φ): 1.000 codes: 02.06.00.00

Three-phase total power factor (COS φ): A, 1.000; Code: 02.06.01.00

B, 1.000 codes: 02.06.02.00

C, 1.000 codes: 02.06.03.00

On user's reactive compensation controlling device, show total power factor (COS φ): 1.00

Show Data Comparison by electricity consumption loading tester and user's electric energy meter, approach or equate, determine that electric energy meter wiring is correct.

Restart the micromachine (its rated power factor 0.86) on electricity consumption loading tester, electricity consumption loading tester digital display meter shows:

Three-phase total power factor (COS φ): 1,0.85; 2,0.85; 3,0.85

On electric energy meter, show data:

Total power factor (COS φ): 0.856; Code: 02.06.00.00

Three-phase total power factor (COS φ): A, 0.856; Code: 02.06.01.00

B、0.849?????????02.06.02.00

C、0.857?????????02.06.03.00

On reactive compensation controlling device, show total power factor (COS φ): 0.85

Then according to electric company's requirement, the starting power factor of reactive compensation controlling device controller is set to (being generally 0.9); The self-actuated controller of reactive compensation controlling device is arranged on to automated location, and reactive compensation controlling device will carry out automatic cycle switching according to supply load power factor.Through comparing, user's electric energy meter shows when numerical value is identical with above parameter or close, determines that electric energy meter wiring is accurate; Electric energy meter shows that the controller of reactive factor numerical value and reactive power compensator shows that power factor is identical with above parameter or close, determines that reactive compensator controller is qualified; According to actuating motor reactive factor, and electric company requires general power supply the factor is lead to consumer's meritorous service value to be not less than 0.9 requirement, observe the action situation of reactive compensation controlling device, reactive compensation controlling device regular event, after reactive compensation controlling device drops into, reactive compensation controlling device shows data higher than 0.9 or is the power factor of negative value, determines that reactive compensation controlling device wiring is accurate.

Embodiment 2

On Dec 25th, 2013, transformer, power distribution equipment, electric energy meter, the reactive compensation controlling device of Laiwu City Fragrance Hill melon seeds factory all install, and transformer capacity is 200KVA, and the present invention is positioned near new user's power distribution equipment, and wiring is with embodiment 1.

All cables have connected, and press operation and start second in gear selection button 15, now only control second group of 4-6R resistance heated of heating resistor 13, and heating resistor of every phase, completes load operation; On electricity consumption loading tester digital display meter, show:

Three-phase voltage U value: 1,235.3 V; 2,232.9 V; 3,233.4 V

Average voltage U value (Avg): 233.8

Three-phase current I value: 1,8.43 A; 2,8.44 A; 3,8.45 A

Three-phase average current I value (Avg): 8.44

Frequency (FPEO): 50.00 Hz

Three-phase activity coefficient (COS): 1,1.00; 2,1.00; 3,1.00

Average power factor (Avg): 1.00

Three phase power (P): 1,2.00 KW; 2,1.99 KW; 3,2.06 KW

Three-phase average power (Avg): 2.01

On electric energy meter, show data:

Three-phase voltage U value: A, 235.3 V code: 02.01.01.00

B, 232.9 V code: 02.01.02.00

C, 233.4 V code: 02.01.03.00

Three-phase current I value: A, 8.43 A code: 02.02.01.00

B, 8.44 A code: 02.02.02.00

C, 8.45 A code: 02.02.03.00

Forward active power:

Meritorious general power: 6.071KW; Code: 02.03.00.00

Three phases active power: A, 2.134 KW code: 02.03.01.00

B, 1.965 KW code: 02.03.02.00

C, 1.972 KW code: 02.03.03.00

Total power factor (COS φ): 1.000 codes: 02.06.00.00

Three-phase total power factor (COS φ): A, 1.000 codes: 02.06.01.00

B, 1.000 codes: 02.06.02.00

C, 1.000 codes: 02.06.03.00

On reactive compensation controlling device, show total power factor (COS φ): 1.00

By Data Comparison, show that data are close or consistent, determine that electric energy meter wiring is correct.

Start micromachine (its rated power factor 0.86) on tester, tester digital display meter shows:

Three-phase total power factor (COS φ): 1,0.85; 2,0.85; 3,0.85

On electric energy meter, show data:

Total power factor (COS φ): 0.856 code: 02.06.00.00

Three-phase total power factor (COS φ): A, 0.856 code: 02.06.01.00

B, 0.849 code: 02.06.02.00

C, 0.857 code: 02.06.03.00

On reactive compensation controlling device, show total power factor (COS φ): 0.85

Automatic cycle switching is with embodiment 1.

By above comparing, comparison method is with embodiment 1.By comparison, its data approach or are consistent, determine that gauging table metering wiring is accurate, reactive compensation controlling device controller is qualified, reactive power compensator wiring is accurate.

Embodiment 3

On January 25th, 2014, the geotechnological 400KVA of factory transformer low voltage power distribution equipment is contained in new Shanghai and test.Wiring is with embodiment 1.

Press operation simultaneously and start gear and select first and second in button 15, now control first group and second group of 1-6R resistance heated in heating resistor 13, two heating resistors of every phase, complete load operation; Start 1-6R, the resistance of every phase resistance is 3KW, equally the demonstration data on electricity consumption loading tester digital display meter, user's electric energy meter, user's reactive power compensator are contrasted one by one, its data are close or consistent, determine that gauging table metering wiring is accurate, reactive compensator controller is qualified, reactive power compensator wiring is accurate.

Claims (3)

1. the on-the-spot Universal load tester of new clothes electric energy meter, comprise casing (1), chamber door (2) and roller (3), chamber door (2) is rotationally connected with the frame of casing (1), roller (3) is located at the bottom of casing (1), it is characterized in that: the epicoele inside of described casing (1) is provided with PA/PV digital display meter (4), the display screen of PA/PV digital display meter (4) stretches out from the epicoele front panel square opening of casing (1), in casing (1) the epicoele front panel of a side of PA/PV digital display meter (4), be provided with successively four run indicator (5), rear wall middle and upper part in described casing (1) chamber is installed three current transformers (9) successively, four A.C. contactors (10), connecting terminal block (11) and the zero-emission of confluxing (12), be provided with QF1 automatic control switch (16) in a side of connecting terminal block (11), QF1 automatic control switch (16) stretches out from the rear wall of casing (1), conflux zero-emission (12) from stretching out from the rear wall of casing (1), one end of three current transformers (9) respectively with 1 of PA/PV digital display meter (4) outgoing line side, 3, 5 pin are connected, after three current transformers (9) other end parallel connection, connect 6 pin of PA/PV digital display meter (4) and connect to conflux simultaneously and arrange (18), conflux and arrange (18) and stretch out from the rear wall of casing (1), described four A.C. contactors (10), three input end wires of each A.C. contactor (10) access three-phase stube cable L1, L2, L3 respectively, wherein the output terminal of first three A.C. contactor (10) is connected with 1,3,5,7,9,11,13,15,17 interfaces of connecting terminal block (11) successively, and the output terminal of a rear A.C. contactor (10) is connected with micro ac motor (7) by electrothermal relay (14), on the roof of casing (1), be provided with four operations and start gear selection button (15) and four operation stop buttons (17), four operations start the 1-4KM that gear selection button (15) is control action in four A.C. contactors (10), access IFR electrothermal relay (14) on the circuit of 4KM simultaneously, described micro ac motor (7) is arranged on the left side, middle and lower part in casing (1) by support (6), is provided with fan (8) at the axle head of micro ac motor (7), and fan (8) is aimed at the louver-type ventilation mouth of casing (1) sidewall, right side, middle and lower part fixed installation thermal resistor (13) in described casing (1), the input end of thermal resistor (13) is connected with 1,3,5,7,9,11,13,15,17 three-phase stube cable L1 of connecting terminal block (11), the interface of L2, L3 successively, its output termination zero-emission (12) of confluxing, the zero-emission of confluxing (12) accesses four operations again and starts gears and select buttons (15), after selecting the output terminal of button (15) and four operation stop buttons (17) to connect, described Si Ge road operation startup gear accesses L1 phase and N stube cable by QF1 automatic control switch (16) again.
2. the on-the-spot Universal load tester of new clothes electric energy meter according to claim 1, it is characterized in that: described thermal resistor (13) is made up of nine heating resistor 1-9R, nine heating resistors are divided into three groups, every group three, access stube cable L1, L2, L3 by connecting terminal block (11) and A.C. contactor (10) respectively; Described thermal resistor (13) and micro ac motor (7) are controlled by four A.C. contactors (10) respectively.
3. the on-the-spot Universal load tester of new clothes electric energy meter according to claim 1, it is characterized in that: four operations of described A.C. contactor (10) control action start gear and select button (15), and 1-4KM is connected with the output terminal of thermal resistor (13) simultaneously.
CN201410211923.1A 2014-05-20 2014-05-20 New clothes electric energy meter scene Universal load tester CN103941218B (en)

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CN201610339519.1A CN105785314B (en) 2014-05-20 2014-05-20 The load tester of live new clothes electric energy meter

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Publication number Priority date Publication date Assignee Title
EP0871040A2 (en) * 1997-04-08 1998-10-14 Schlumberger Industries Limited Calibration method for an electronic electricity meter
CN2347182Y (en) * 1998-11-06 1999-11-03 张善武 Watt-hour meter wiring tester
EP1498741A1 (en) * 2003-07-15 2005-01-19 Iskraemeco, Merjenje in Upravljanje Energije, D.D. Watthour meter with integrated self-testing
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN200979592Y (en) * 2006-12-15 2007-11-21 娄瑞童 An inspection apparatus for single-phase load of electric meter
CN101231333A (en) * 2008-01-11 2008-07-30 莱芜供电公司 Portable metrology charge instrument
CN202126498U (en) * 2011-07-05 2012-01-25 安徽省电力公司马鞍山供电公司 On-site detector for single-phase electric energy meter
CN202649459U (en) * 2012-05-28 2013-01-02 新安县电业公司 Temporary load device for electric energy metering device field calibration
CN203838333U (en) * 2014-05-20 2014-09-17 莱芜鲁能开源集团电器有限公司 On-site universal load tester for newly installed electric energy meters

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871040A2 (en) * 1997-04-08 1998-10-14 Schlumberger Industries Limited Calibration method for an electronic electricity meter
CN2347182Y (en) * 1998-11-06 1999-11-03 张善武 Watt-hour meter wiring tester
EP1498741A1 (en) * 2003-07-15 2005-01-19 Iskraemeco, Merjenje in Upravljanje Energije, D.D. Watthour meter with integrated self-testing
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN200979592Y (en) * 2006-12-15 2007-11-21 娄瑞童 An inspection apparatus for single-phase load of electric meter
CN101231333A (en) * 2008-01-11 2008-07-30 莱芜供电公司 Portable metrology charge instrument
CN202126498U (en) * 2011-07-05 2012-01-25 安徽省电力公司马鞍山供电公司 On-site detector for single-phase electric energy meter
CN202649459U (en) * 2012-05-28 2013-01-02 新安县电业公司 Temporary load device for electric energy metering device field calibration
CN203838333U (en) * 2014-05-20 2014-09-17 莱芜鲁能开源集团电器有限公司 On-site universal load tester for newly installed electric energy meters

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