CN202748425U - Residual current protection uninterrupted testing device - Google Patents
Residual current protection uninterrupted testing device Download PDFInfo
- Publication number
- CN202748425U CN202748425U CN 201220451155 CN201220451155U CN202748425U CN 202748425 U CN202748425 U CN 202748425U CN 201220451155 CN201220451155 CN 201220451155 CN 201220451155 U CN201220451155 U CN 201220451155U CN 202748425 U CN202748425 U CN 202748425U
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- contactor
- residual current
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- sequence transformer
- rcd
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Abstract
The utility model relates to a power transmission line system, and particularly relates to a residual current protection uninterrupted testing device, which belongs to the technical field of power cable condition based maintenance. The residual current protection uninterrupted testing device comprises a box body (3), and is characterized in that an upper cover of the box body is provided with a switch (1) and indicator lamps (2), a residual current operated protective device (5) is installed in the box body, a zero-sequence transformer (7) and an intermediate relay (6) are installed on one side of the residual current operated protective device, a contactor (9) is installed on the upper part of the intermediate relay, an input end of a main contact of the contactor is connected to a phase line, an output end of the main contact passes through a fuse and is connected to the zero-sequence transformer together with an N line, the zero-sequence transformer is connected to the protective device, the protective device is connected to a coil terminal of the contactor, a normally open auxiliary contact of the contactor is connected to the intermediate relay, and a normally closed auxiliary contact of the contactor is connected to the indicator lamps and then connected between an L3 phase and the N line. The residual current protection uninterrupted testing device is convenient to carry, simple in operation, and high in safety performance, reduces the number of power failure, improves the reliability of power supply, ensures the safety, and improves economic benefits of a company greatly.
Description
Technical field
The utility model relates to a kind of transmission line of electricity system, and particularly a kind of residual current protecting uninterrupted power test device belongs to power cable state service technique field.
Background technology
A lot of regional users are sparsely populated at present; aging circuit; electrical equipment increases; power consumption increases severely; therefore adopt " TT " system power supply; RCD all is installed; residual current operated protective device is related to low voltage electric network safety and personal safety; also become the Focal point and difficult point of daily management mission for the test of residual current operated protective device; because low-voltage platform area one-level RCD; test once weekly; flood season weekly twice, every protector needs test in a year more than 70 times, each trial jump three-phase each once; namely annual except the line fault tripping operation, the artificial tripping operation that causes because of test reaches more than 210 time.The tripping operation of test RCD can cause the household electrical appliance such as microcomputer, air-conditioning, refrigerator, TV, electric cooker to restart; affect the normal electricity consumption of client; part electrical equipment can be because frequently stopping to send electricity automatically out of service; even can cause scrapping of production class enterprise product; power supply good service meeting reduces in the heart greatly the client; and frequent the power failure reduced delivery, affected the economic benefit of enterprise.
The utility model content
According to above the deficiencies in the prior art, the technical problems to be solved in the utility model is: provide a kind of high power supply quality, power supply reliability high, be easy to carry, the residual current protecting uninterrupted power test device that simple to operate, security performance is high.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of residual current protecting uninterrupted power test device, comprise casing, it is characterized in that: box cover arranges switch and pilot lamp, box house is installed RCD, RCD one side is installed zero-sequence transformer and auxiliary reclay, and contactor is installed on auxiliary reclay top;
Three input ends of described main noddle on contactor connect L1 phase, L2 phase and L3 mutually; three output terminals are by accessing zero-sequence transformer with the N line behind the fuse; zero-sequence transformer connects RCD; RCD connects the coil terminals of contactor; the auxiliary contact of often opening of contactor connects auxiliary reclay; main noddle on contactor connects reometer, and the normally closed auxiliary contact of contactor connects pilot lamp and is connected between L3 phase and the N line.
Protector, zero-sequence transformer, auxiliary reclay and contactor are installed to a box house; compact conformation carries with easy to use, and connected mode is identical with connected mode in the main circuit; be parallel to the main circuit two ends and can not cause the user to perplex, the convenient detection that do not have a power failure.
Described casing front arranges two circular holes, and circular hole is corresponding with zero-sequence transformer.Conveniently be connected to main circuit and carry out test job.
Described casing side arranges the handle band.Be convenient for carrying.
The beneficial effect that the anti-on-load broaching tool lock blocking device of the utility model switchboard has is: described residual current protecting uninterrupted power test device is in the situation that the continuous electricity of circuit is tested protector; can correctly test protective device performance and action situation; power supply quality and power supply reliability have greatly been improved; reduced client's loss; improved the good service quality of power supply enterprise; solve the inconvenience that has a power failure and bring to the client because of the protector test, fundamentally solved the problem that must have a power failure because of the RCD test.The utility model is with strong points, is easy to carry, and is simple to operate, and shell adopts insulating material, and security performance is high, and the contradiction of having avoided test to have a power failure reduces the outage number of times, has improved power supply reliability, guarantees safety and improved greatly the economic benefit of company.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is Circuits System schematic diagram of the present utility model.
Wherein: 1, switch 2, pilot lamp 3, casing 4, handle band 5, RCD 6, auxiliary reclay 7, zero-sequence transformer 8, circular hole 9, contactor.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Shown in Fig. 1-2, residual current protecting uninterrupted power test device, comprise casing 3, casing 3 loam cakes arrange switch 1 and pilot lamp 2, the casing 3 inner RCDs 5 of installing, RCD 5 one sides are installed zero-sequence transformer 7 and auxiliary reclay 6, and contactor 9 is installed on auxiliary reclay 6 tops; Three input ends of described contactor 9 main contacts connect L1 phase, L2 phase and L3 mutually; three output terminals are by accessing zero-sequence transformer with the N line behind the fuse; zero-sequence transformer connects RCD 5; RCD 5 connects the coil terminals of contactor; the auxiliary contact of often opening of contactor 9 connects auxiliary reclay 6; contactor 9 main contacts connect reometer, and the normally closed auxiliary contact of contactor 9 connects pilot lamp 2 and is connected between L3 phase and the N line.Casing 3 fronts arrange two circular holes 8, and circular hole 8 is corresponding with zero-sequence transformer 7.Casing 3 sides arrange handle band 4.
Principle of work and use procedure:
During use; portable residual current protecting uninterrupted power test device is installed in the two ends of main circuit operation RCD and operation contactor; the circuit connection is connected to form parallel circuit with the interior circuit of major loop in the portable residual current protecting uninterrupted power test device; press protector 2 K switch M2 main contacts closed; contactor KM1, KM2 all are in closed running status; confirm that by reometer and pilot lamp contactor KM2 is closed, auxiliary reclay KA1, KA2 are in closure state.During test protector 1; test with tester at auxiliary reclay KA1 outgoing line side; when ground connection (residue) when electric current reaches working value; protector 1 action; contactor KM1 main contact disconnects; the normally closed auxiliary contact of KM1 is closed; contactor disconnects, and pilot lamp HL1 is bright, and the current transformer no current is designated as zero by reometer; according to pilot lamp; two indication judgements of reometer contactor has really disconnected and has met the rules regulation; KM1 often opens the auxiliary contact disconnection simultaneously, and auxiliary reclay KA1 disconnects, and the KA1 outgoing line side is without electricity; tester operation of recording current value and actuation time, prove whether protector 1 operation is normal.According to the protector principle, protector 1 test loop ground current can not impact protector 2 loops, and contactor KM2 main contact is still closed to the circuit normal power supply, if during circuit generation this moment earth fault, will guarantee power grid securities by protector 2.After protector 1 time closing; KM1 often opens the auxiliary contact closure; auxiliary reclay KA1 coil gets electric closure; the KA1 outgoing line side has electricity; can carry out successively other tests mutually; after three-phase all was completed the closed operation of KM1, disconnection protector 2 devices made and are in stand-by state, reach the purpose of the continuous electrical testing protector of circuit.Protector 1, protector 2 all adopt the adjustable protector of action current gear; can make protector 2 gear values be lower than protector 1 gear value tests; after contactor KM2 disconnects during test by KM1 to line powering; if during circuit generation this moment earth fault; the marking current that zero-sequence transformer KAZ1 passes through is still reliable open failure circuit of earth-fault current and protector 2 measuring current sum protectors 1; guarantee electrical network and personal safety; in addition because protector 2 is in stand-by state for a long time, so do not need frequent test.
Claims (3)
1. residual current protecting uninterrupted power test device, comprise casing (3), it is characterized in that: casing (3) loam cake arranges switch (1) and pilot lamp (2), the inner RCD (5) of installing of casing (3), RCD (5) one sides are installed zero-sequence transformer (7) and auxiliary reclay (6), and contactor (9) is installed on auxiliary reclay (6) top;
Three input ends of described contactor (9) main contact connect L1 phase, L2 phase and L3 mutually; three output terminals are by accessing zero-sequence transformer with the N line behind the fuse; zero-sequence transformer connects RCD (5); RCD (5) connects the coil terminals of contactor; the auxiliary contact of often opening of contactor (9) connects auxiliary reclay (6); contactor (9) main contact connects reometer, is connected between L3 phase and the N line after the normally closed auxiliary contact of contactor (9) connects pilot lamp (2).
2. residual current protecting uninterrupted power test device according to claim 1, it is characterized in that: described casing (3) front arranges two circular holes (8), and circular hole (8) is corresponding with zero-sequence transformer (7).
3. residual current protecting uninterrupted power test device according to claim 1, it is characterized in that: described casing (3) side arranges handle band (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220451155 CN202748425U (en) | 2012-09-05 | 2012-09-05 | Residual current protection uninterrupted testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220451155 CN202748425U (en) | 2012-09-05 | 2012-09-05 | Residual current protection uninterrupted testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748425U true CN202748425U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220451155 Expired - Fee Related CN202748425U (en) | 2012-09-05 | 2012-09-05 | Residual current protection uninterrupted testing device |
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| Country | Link |
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Cited By (4)
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| CN104101765A (en) * | 2014-07-18 | 2014-10-15 | 国家电网公司 | Multi-way intelligent online leakage protector power-on testing device |
| CN106597140A (en) * | 2016-08-30 | 2017-04-26 | 中山市开普电器有限公司 | Earth leakage protection device overload testing device |
| CN108181581A (en) * | 2018-03-19 | 2018-06-19 | 山东省产品质量检验研究院 | The intelligent test device and test method of a kind of residual current action protector |
| CN114089163A (en) * | 2021-11-23 | 2022-02-25 | 广东电网有限责任公司 | Equipment state detection circuit and equipment state detection device |
-
2012
- 2012-09-05 CN CN 201220451155 patent/CN202748425U/en not_active Expired - Fee Related
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| CN106597140A (en) * | 2016-08-30 | 2017-04-26 | 中山市开普电器有限公司 | Earth leakage protection device overload testing device |
| CN108181581A (en) * | 2018-03-19 | 2018-06-19 | 山东省产品质量检验研究院 | The intelligent test device and test method of a kind of residual current action protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |