CN204008902U - Online leakage protected uninterrupted power test device - Google Patents
Online leakage protected uninterrupted power test device Download PDFInfo
- Publication number
- CN204008902U CN204008902U CN201420399395.2U CN201420399395U CN204008902U CN 204008902 U CN204008902 U CN 204008902U CN 201420399395 U CN201420399395 U CN 201420399395U CN 204008902 U CN204008902 U CN 204008902U
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- China
- Prior art keywords
- relay
- contact
- current sensor
- leak
- phase
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of online leakage and protect uninterrupted power test device, comprise and be connected on contactor and leak the first current sensor of protecting between device contact, one end of the second current sensor is connected between contactor and the first current sensor, the other end of the second current sensor is connected with the contact of the first relay, the contact phase-connecting wire L1 of the first relay; A leakage current resistance one end is connected with zero line, and the other end is connected with the contact of the second relay, and the contact of the second relay connects test loop mutual inductor rear side phase line; First, second relay parallel connection, a terminal connecting zero line of first, second relay, other end phase-connecting wire L1.The utility model is rational in infrastructure, and wiring is simple, can be not to client's power-off in the situation that to leak protect test, trial jump, improve power supply reliability and leak and protect integrality.
Description
Technical field
The utility model relates to a kind of online leakage and protects uninterrupted power test device.
Background technology
Rural power grids RCD (be called for short to leak and protect) the installation and operation code of National Energy Board; rural low voltage network classification installing is leaked guarantor and is ensured low voltage electric network safe operation, reduces or prevent one of effective measures of personal electric shock casualty accident; the Zong Baoyingyou power supply enterprise in common transformer platform district, rural area installs; be arranged in the bus of transformer platform area or on each built on stilts extension line, leak and protect the combined protector that should adopt electromechanical three-phase and four-line protector and conform with the regulations.Leak and protect a monthly test action characteristic of requirement in operational management, thunderstorm season is tested weekly once.
Need routine test, trial jump owing to leaking to protect in operational management, in operating process, can cause low-voltage customer dead electricity, reduced power supply reliability and increased the Frequent trip that client thinks.
Summary of the invention
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and uninterrupted power test device is protected in wiring online leakage simple, that improve power supply reliability and leakage guarantor integrality.
Technical solution of the present utility model is:
A kind of online leakage protected uninterrupted power test device, it is characterized in that: comprise and be connected on contactor and leak the first current sensor of protecting between device contact, one end of the second current sensor is connected between contactor and the first current sensor, the other end of the second current sensor is connected with the contact of the first relay, the contact phase-connecting wire L1 of the first relay; A leakage current resistance one end is connected with zero line, and the other end is connected with the contact of the second relay, and the contact of the second relay connects test loop mutual inductor rear side phase line; First, second relay parallel connection, a terminal connecting zero line of first, second relay, other end phase-connecting wire L1.
The utility model is rational in infrastructure, and wiring is simple, can be not to client's power-off in the situation that to leak protect test, trial jump, improve power supply reliability and leak and protect integrality.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of an embodiment of the utility model.
In figure, in dotted line frame, be this device.
Embodiment
A kind of online leakage protected uninterrupted power test device, comprise and be connected on contactor JCQ and leak the first current sensor LJ1 protecting between device LBQ contact, an end of the second current sensor LJ2 is connected between contactor JCQ and the first current sensor LJ1, the other end of the second current sensor LJ2 LJ2 is connected with the contact of the first relay k1, the contact phase-connecting wire L1 of the first relay k1; A leakage current resistance R one end is connected with zero line N, and the other end is connected with the contact of the second relay K 2, and the contact of the second relay K 2 connects test loop mutual inductor rear side phase line; First, second relay parallel connection, a terminal connecting zero line N of first, second relay, other end phase-connecting wire L1.
Testing sequence:
1, K1 closes, and LJ1 electric current reduces, and LJ3 electric current increases, and confirms that K1 closes;
2, K2 closes, and leaks and protects action, and LJ1 is that 0, LJ2 electric current increases, and confirmation is leaked and protected action;
3, K2 disconnects, and LJ2 reduces, and LJ1 increases, and confirms to leak to protect and closes;
4, K1 disconnects, and test finishes.
Claims (1)
1. online a leakage protected uninterrupted power test device, it is characterized in that: comprise and be connected on contactor and leak the first current sensor of protecting between device contact, one end of the second current sensor is connected between contactor and the first current sensor, the other end of the second current sensor is connected with the contact of the first relay, the contact phase-connecting wire L1 of the first relay; A leakage current resistance one end is connected with zero line, and the other end is connected with the contact of the second relay, and the contact of the second relay connects test loop mutual inductor rear side phase line; First, second relay parallel connection, a terminal connecting zero line of first, second relay, other end phase-connecting wire L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399395.2U CN204008902U (en) | 2014-07-18 | 2014-07-18 | Online leakage protected uninterrupted power test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420399395.2U CN204008902U (en) | 2014-07-18 | 2014-07-18 | Online leakage protected uninterrupted power test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008902U true CN204008902U (en) | 2014-12-10 |
Family
ID=52048881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420399395.2U Expired - Fee Related CN204008902U (en) | 2014-07-18 | 2014-07-18 | Online leakage protected uninterrupted power test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008902U (en) |
-
2014
- 2014-07-18 CN CN201420399395.2U patent/CN204008902U/en not_active Expired - Fee Related
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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: 20141210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |