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Testing equipment

A technology of tested equipment and circuits, applied in the direction of circuit breaker testing, measuring electricity, measuring devices, etc., can solve the problem that there is no device for measuring A-type leakage circuit breakers, and achieve the effect of reasonable structure and meeting testing requirements

Inactive Publication Date: 2016-08-17
胡小青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no device for measuring A-type leakage circuit breakers in the prior art

Method used

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Embodiment 1）

[0022] See Figure 1-3 , Test equipment This embodiment is a test equipment for testing leakage circuit breakers, including: AC power supply circuit 1, DC power supply circuit 7, phase generation circuit 2, AC leakage adjustment circuit 3, phase display circuit 6, indicator light circuit 5 and time detection circuit 4.

[0023] The AC power supply circuit 1 has a first live wire end for forming a load circuit and a second live wire end for forming a simulated leakage circuit, the first live wire end and the second live wire end are used to connect with the live wire input end of the device under test 9, The neutral terminal of the load circuit is used to connect with the neutral terminal of the device under test 9 . In this embodiment, the device under test 9 is a type A leakage circuit breaker.

[0024] The phase generation circuit 2 is used to connect with the live wire output terminal L2 of the device under test 9; the phase generation circuit 2 includes a control button ...

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Abstract

The invention relates to testing equipment which comprises an alternating-current power source circuit, a phase generating circuit, an alternating-current leakage adjusting circuit and a time detecting circuit. The testing equipment is characterized in that the phase generating circuit comprises a silicon-controlled current control circuit which comprises a triode BG18 which is on according to control signals output by a first half-wave rectification circuit, a second half-wave rectification circuit and a third half-wave rectification circuit, an optic coupling chip IC4 driven by the triode BG18, and a bidirectional silicon-controlled rectifier BG19 controlled by the optic coupling chip IC4 to be on and off, and A and K poles of the bidirectional silicon-controlled rectifier BG19 are serially connected in an externally-connected simulation electricity leakage loop. By improving the silicon-controlled current control circuit, so that the testing equipment is reasonable in structure and can effectively meet testing requirements of special electricity leakage circuit breakers.

Description

technical field [0001] The invention relates to a testing device, in particular to a testing device. Background technique [0002] According to the national standards GB14048.2-2001, GB16916.1-2003, GB16917.1-2003 and other regulations: whether it is suddenly applied or slowly rising with a specified residual pulsating DC or residual sinusoidal AC current, it can be guaranteed within the specified time A leakage circuit breaker that trips is called a type A leakage circuit breaker. For the residual sinusoidal alternating current with no DC component whether it is suddenly applied or slowly rising, the leakage circuit breaker that can ensure tripping within the specified time is called an AC type leakage circuit breaker. It can be seen from the above that the type A leakage circuit breaker covers the function of the AC type leakage circuit breaker. [0003] The above "specified residual pulsating current" refers to the following four situations: half-wave rectified current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327G01R31/3277
Inventor 胡小青
Owner 胡小青