An improved testing equipment for testing leakage circuit breakers
A leakage circuit breaker and detection equipment technology, which is applied in the direction of circuit breaker testing, components of electrical measuring instruments, and measurement of electrical variables, can solve the problem that there is no device for measuring A-type leakage circuit breakers, and achieve reasonable structure, The effect of meeting the test requirements
Inactive Publication Date: 2016-05-04
国网山东省电力公司莱西市供电公司
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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
[0013] See Figure 1-3 , this embodiment is an improved detection device 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.
[0014] 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.
[0015] The phase generating circuit 2 is used to be connected to the fire wire output terminal L2 of the device under test 9; the phase generating circuit 2 includes a control button ...
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The invention relates to an improved detection device which comprises an alternating-current power circuit, a phase generation circuit, an alternating-current electric leakage adjusting circuit and a time detection circuit. The phase generation circuit comprises a direct current generation circuit composed of a resistor R67, a 9V dry battery Bt, a button switch SB5 and a button switch SB6. One end of the resistor R67 is connected with the positive pole of a 9V dry battery U, and the other end of the resistor R67 is connected with an intermediate contact of the button switch SB5. A normally-opened contact of the button switch SB5 is connected with a normally-opened contact and a normally-closed contact of the button switch SB6, the negative pole of the 9V dry battery is connected with the normally-opened contact and the normally-closed contact of the button switch SB6, an intermediate contact of the button switch SB6 is connected with the positive pole of a direct current output wiring column, and the intermediate contact SB6-21 of the button switch SB6 is connected with the negative pole of direct current output. The improved detection device is reasonable in structure and can meet special requirements of users.
Description
technical field [0001] The invention relates to an improved detection 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 with a current lagging ...
Claims
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IPC IPC(8): G01R31/327
CPCG01R1/30G01R31/327
Inventor 李晓峰王建滨王静栾磊亮蔡培培戴舒展左明德
Owner 国网山东省电力公司莱西市供电公司