CN201666928U - Matched test table of three-stage residual current operated protective device - Google Patents
Matched test table of three-stage residual current operated protective device Download PDFInfo
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- CN201666928U CN201666928U CN201020169219.1U CN201020169219U CN201666928U CN 201666928 U CN201666928 U CN 201666928U CN 201020169219 U CN201020169219 U CN 201020169219U CN 201666928 U CN201666928 U CN 201666928U
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- 238000012360 testing method Methods 0.000 title claims abstract description 84
- 230000001681 protective effect Effects 0.000 title claims abstract description 29
- 230000004224 protection Effects 0.000 claims abstract description 38
- 230000001012 protector Effects 0.000 claims description 24
- 101150058800 DLH1 gene Proteins 0.000 claims description 10
- 238000009434 installation Methods 0.000 abstract description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model relates to a matched test table of a three-stage residual current operated protective device, which belongs to the field of installation, operation and test equipment of a residual current operated protective device. The matched test table of the three-stage residual current operated protective device comprises a table frame body and a three-phase power lead, wherein the table frame body consists of a table frame, a vertical cabinet and a transverse frame part, the upper part of the table frame is a rest region, and the lower part of the table frame is a support region. The utility model is characterized in that a test circuit is arranged inside the table frame body, one side of the table frame body is provided with an indicating lamp, a milliammeter and a protective device socket which are electrically connected with the test circuit, and the test circuit is connected with the three-phase power lead. Through the adoption of the test table, whether the override trip phenomenon caused by requirement dissatisfaction of parameter setting exists between the three stages of protection or not can be tested, the action time and the action current value of each stage of protective devices can be tested, and the quality conditions of the current used and newly introduced protective devices can be mastered. The utility model can save labor, and can solve the problem of override trip caused by nonmatched action time and action current value of each stage of protective devices.
Description
Technical field
The utility model provides a kind of three grades of RCD matching test platforms, belongs to installation, operation, the testing apparatus field of RCD.
Background technology
Rural low voltage network is carried out three-level protective at present; in actual motion, the action failure that protector takes place occupies very big ratio, especially popularizing along with household electrical appliance in that the rural area low-voltage equipment is in service; the increase of frequency conversion equipment, more and more higher to the performance requirement of protector.Exist the coarse product of inferior quality of quality and fake products in the market, or even the product eliminated of explicit order already, to solicit at a low price, dragons and fishes jumbled together is difficult for finding.Therefore after adopting the cascade protection mode, an urgent demand solves between the protections at different levels because of actuation time and action current do not match, and causes the protector action, causes overstep tripping, influences the problem of power supply quality.
The utility model content
According to above deficiency of the prior art; the purpose of this utility model is to provide a kind of action mismatch problem that low voltage electric network three-level protective operation aspect exists that solves, and can test three grades of RCD matching test platforms of protector actuation time and action current value.
The technical scheme that its technical matters that solves the utility model adopts is: three grades of RCD matching test platforms; comprise by stand, perpendicular cabinet, crossbearer and partly form stand body and three-phase power line; stand top is the test section; the bottom is the Support; it is characterized in that: described stand body inside is provided with test circuit; stand body one side is provided with pilot lamp, milliammeter and protector socket; pilot lamp, milliammeter and protector socket are electrically connected with test circuit, and test circuit connects three-way power lead.
During test; in protector socket, insert protector to be measured, by controlling test circuit dry run environment, test the electric property of protector and matching each other then; if problem, then the indication of pilot lamp and milliammeter is reported to the police and video data.
Wherein preferred version is:
Described protector socket comprises first class of protection device socket, second class protection device socket and three-level protective device socket, and the terminals in first class of protection device socket, second class protection device socket and the three-level protective device socket are connected test circuit respectively.Simulate the three-level protective running environment of actual low-voltage electrical network.
Described test circuit comprises zero sequence current mutual inductor DLH1; switch ZHK1; Test Switchboard K1-K4; potentiometer and milliammeter A1-A5; zero sequence current mutual inductor DLH1 is arranged on the three-phase power line; the output terminal of zero sequence current mutual inductor DLH1 connects the terminals of first class of protection device socket; the end of switch ZHK1 connects the three-phase of three-way power lead respectively; the other end is by Test Switchboard K1 and milliammeter A5 ground connection; the three-phase of three-phase power line is milliammeter A1-A3 and the potentiometer ground connection by connecting respectively; a wherein phase of three-way power lead is connected the terminals of second class protection device socket with zero line; one end of the terminals of second class protection device socket connects milliammeter A5 by Test Switchboard K2; the other end of the terminals of second class protection device socket is provided with an end of the terminals that connect three-level protective device socket; the other end of the terminals of three-level protective device socket is provided with and connects Test Switchboard K3; K4 and pilot lamp; Test Switchboard K1-K3 is provided with common port; Test Switchboard K4 connects with milliammeter A4, by potentiometer ground connection.Closure by controlling Test Switchboard K1-K4 and opening, and the difference of switch ZHK1 inserts certain phase in the three-phase of electric main, can realize the test of three protectors.
The beneficial effect that three grades of RCD matching tests of the utility model platform is had is: by adopting this test board, can test whether to exist between the three-level protective because of parameter that the undesirable overstep tripping that causes being set.Can test protector at different levels actuation time and action current value, grasp the existing quality condition that uses and newly advance protector, prevent the substandard product operation.
The utility model can be tested 1 people and just can operate so that save manually, by test; can grasp the operational factor situation of protector; in time change defective protector, solved protectors at different levels and do not matched, cause the problem of overstep tripping because of actuation time and action current value.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Wherein: DLH1, zero sequence current mutual inductor CJ1, ac contactor contact LMB1, first class of protection device LMB2, second class protection device LMB3, three-level protective device K1-K4, Test Switchboard L1, pilot lamp ZHK1, switch A1-A5, milliammeter.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As shown in Figure 1, comprise by stand, perpendicular cabinet, crossbearer and partly form stand body and three-phase power line that stand top is the test section, the bottom is the Support.Stand body inside is provided with test circuit, and stand body one side is provided with pilot lamp, milliammeter and protector socket, and pilot lamp, milliammeter and protector socket are electrically connected with test circuit, and test circuit connects three-way power lead.
Protector socket comprises first class of protection device socket, second class protection device socket and three-level protective device socket, and the terminals in first class of protection device socket, second class protection device socket and the three-level protective device socket are connected test circuit respectively.Protector socket also can be a jack.
Test circuit comprises zero sequence current mutual inductor DLH1; switch ZHK1; Test Switchboard K1-K4; potentiometer and milliammeter A1-A5; zero sequence current mutual inductor DLH1 is arranged on the three-phase power line; the output terminal of zero sequence current mutual inductor DLH1 connects the terminals of first class of protection device socket; the end of switch ZHK1 connects the three-phase of three-way power lead respectively; the other end is by Test Switchboard K1 and milliammeter A5 ground connection; the three-phase of three-phase power line is milliammeter A1-A3 and the potentiometer ground connection by connecting respectively; a wherein phase of three-way power lead is connected the terminals of second class protection device socket with zero line; one end of the terminals of second class protection device socket connects milliammeter A5 by Test Switchboard K2; the other end of the terminals of second class protection device socket is provided with an end of the terminals that connect three-level protective device socket; the other end of the terminals of three-level protective device socket is provided with and connects Test Switchboard K3; K4 and pilot lamp L1; Test Switchboard K1-K3 is provided with common port; Test Switchboard K4 connects with milliammeter A4, by potentiometer ground connection.Test Switchboard K1 is a first class of protection device Test Switchboard, and Test Switchboard K2 is a second class protection device Test Switchboard, and Test Switchboard K3 is a three-level protective device Test Switchboard, and Test Switchboard K4 is a dash current action experiment switch.
Principle of work and use:
During use; in first class of protection device socket, insert first class of protection device LMB1; it is RCD; in second class protection device socket, insert second class protection device LMB2; in three-level protective device socket, insert three-level protective device LMB3; ac contactor contact CJ1 is set, simulation low voltage electric network running environment on the three-phase power line.
During test:
1, the one-level residual current acting of first class of protection device LMB1 is tested; stir ZHK1 first class of protection device switch, select W, U, V phase test line, Test Switchboard K1 closes; by milliammeter A5 (action current test milliammeter), test W, U, V phase circuit action current respectively.
2, to the secondary residual current acting experiment of second class protection device LMB2, the Test Switchboard K2 that closes by milliammeter A5 (action current test milliammeter), tests secondary residual current protecting action current.
3, to the secondary residual current acting experiment of three-level protective device LMB3, the Test Switchboard K3 that closes by milliammeter A5 (action current test milliammeter), tests three grades of residual current protecting action currents.
4, the Test Switchboard K4 that closes a switch carries out anti-overstep tripping experiment at line end to one, two, three protector LMB1-LMB3 by milliammeter A4 (dash current test milliammeter).
5, by milliammeter A1-A3 (line leak electric current milliammeter), simulative debugging W, U, V three-phase line be Leakage Current over the ground.
Claims (3)
1. three grades of RCD matching test platforms; comprise by stand, perpendicular cabinet, crossbearer and partly form stand body and three-phase power line; stand top is the test section; the bottom is the Support; it is characterized in that: described stand body inside is provided with test circuit; stand body one side is provided with pilot lamp, milliammeter and protector socket, and pilot lamp, milliammeter and protector socket are electrically connected with test circuit, and test circuit connects three-phase power line.
2. three grades of RCD matching test platforms according to claim 1; it is characterized in that: described protector socket comprises first class of protection device socket, second class protection device socket and three-level protective device socket, and the terminals in first class of protection device socket, second class protection device socket and the three-level protective device socket are connected test circuit respectively.
3. three grades of RCD matching test platforms according to claim 1 and 2; it is characterized in that: described test circuit comprises zero sequence current mutual inductor DLH1; switch ZHK1; Test Switchboard K1-K4; potentiometer and milliammeter A1-A5; zero sequence current mutual inductor DLH1 is arranged on the three-phase power line; the output terminal of zero sequence current mutual inductor DLH1 connects the terminals of first class of protection device socket; the end of switch ZHK1 connects the three-phase of three-way power lead respectively; the other end is by Test Switchboard K1 and milliammeter A5 ground connection; the three-phase of three-phase power line is milliammeter A1-A3 and the potentiometer ground connection by connecting respectively; one of three-way power lead is connected the terminals of second class protection device socket mutually with zero line; one end of the terminals of second class protection device socket connects milliammeter A5 by Test Switchboard K2; the other end of the terminals of second class protection device socket is provided with an end of the terminals that connect three-level protective device socket; the other end of the terminals of three-level protective device socket is provided with and connects Test Switchboard K3; K4 and pilot lamp; Test Switchboard K1-K3 is provided with common port; Test Switchboard K4 connects with milliammeter A4, then by potentiometer ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020169219.1U CN201666928U (en) | 2010-04-23 | 2010-04-23 | Matched test table of three-stage residual current operated protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020169219.1U CN201666928U (en) | 2010-04-23 | 2010-04-23 | Matched test table of three-stage residual current operated protective device |
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| Publication Number | Publication Date |
|---|---|
| CN201666928U true CN201666928U (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020169219.1U Expired - Fee Related CN201666928U (en) | 2010-04-23 | 2010-04-23 | Matched test table of three-stage residual current operated protective device |
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| CN (1) | CN201666928U (en) |
Cited By (3)
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| CN111525889A (en) * | 2020-05-09 | 2020-08-11 | 安徽联维新能源科技有限公司 | Solar photovoltaic power generation supply system |
-
2010
- 2010-04-23 CN CN201020169219.1U patent/CN201666928U/en not_active Expired - Fee Related
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| CN105044510A (en) * | 2014-07-18 | 2015-11-11 | 国家电网公司 | Multi-channel intelligent online leakage protection uninterruptible test device with simple wiring and rational structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID SHANDONG ELECTRIC POWER CORPORATION ZIB Free format text: FORMER OWNER: LI DONG WANG QING SHI GUANGYONG ZHANG HONGTAO Effective date: 20140124 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: WANG ZHAOCHEN Effective date: 20140124 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 255080 ZIBO, SHANDONG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140124 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Zibo Power Supply Company of State Grid Shandong Province Electric Power Company Address before: 255080 Zhangdian power supply department, 61 West Village Road, Zhangdian District, Shandong, Zibo Patentee before: Wang Zhaochen Patentee before: Li Dong Patentee before: Wang Qing Patentee before: Shi Guangyong Patentee before: Zhang Hongtao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20180423 |