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Circuit breaker tripping characteristic test system

A characteristic test and circuit breaker technology, applied in the field of circuit breaker tripping characteristic test system, can solve the problems of cumbersome processing and high cost

Inactive Publication Date: 2019-12-03
胡俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing technical problems such as the standard delay, delay and instantaneous characteristics of the tripping characteristics of small circuit breakers that require three systems, and the cost is high, and the processing is cumbersome and other technical problems, the present invention proposes a circuit breaker tripping characteristic test system

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Embodiment Construction

[0012] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

[0013] see figure 1 , a circuit breaker test power supply provided in this embodiment, comprising:

[0014] Precision constant current source 1, control power supply N1-L1, at least one contactor KM1, normally open contact KM2 corresponding to at least one contactor KM1, step-up transformer TC1, instantaneous high current switch KM3 and large time delay Current switch KM4;

[0015] It should be noted that the precision constant current source 1 used for the circuit breaker test power supply can be a precision electronic intelligent AC constant current source, such as the precision constant current source 1 of the model JCC2KAS-2000A, which has control and communication functions .

[0016] The input end ...

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Abstract

The invention discloses a circuit breaker tripping characteristic test system, comprising a test power supply, a touch screen and a PLC control system, wherein the test power supply is in communication connection with the touch screen, and the touch screen is in the communication connection with the PLC control system. The circuit breaker tripping characteristic test system realizes the effect that a circuit breaker tripping characteristic test can be completed in one set of system by combining a constant current source with a transformer which is provided with different voltage gears at a high voltage side and different function gears at a low voltage side, and the technical problems that systems are respectively designed in existing test on standard delay, delay and instant characteristic in tripping characteristics of a small circuit breaker, the three systems are respectively independent and are not mutually interfered, but the three systems have the only difference that current values generated by the constant current sources are different, test results need to be manually recorded, a tedious result recording process is caused and comprehensive cost of the three systems is high are solved.

Description

technical field [0001] The invention relates to the field of electric equipment testing, in particular to a circuit breaker tripping characteristic testing system. Background technique [0002] The tripping characteristic test process of the circuit breaker includes: the test of the standard delay characteristic of the miniature circuit breaker, the test of the delay characteristic of the miniature circuit breaker and the test of the instantaneous characteristic, the traditional test device considers the convenience of volume, transportation and design and production , to design a system for the standard delay, delay and instantaneous characteristics of the tripping characteristics of the miniature circuit breaker. The three systems are independent and do not interfere with each other. The difference between the three systems is only the constant current source. The current values ​​are different, and the test results also need to be recorded manually, resulting in the techn...

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 胡俊
Owner 胡俊