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Improved testing equipment

A testing equipment and an improved technology, applied in the field of improved testing equipment, can solve the problems such as the absence of a measurement device for a type A leakage circuit breaker, and achieve the effect of a reasonable structure and meeting the testing requirements.

Active Publication Date: 2016-04-20
JIANGSU ETERN +1
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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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Examples

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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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Abstract

The invention relates to improved detection equipment. The improved detection equipment comprises an alternating current power circuit, a phase generating circuit with a first half-wave rectification current, an alternating current leakage adjusting circuit and a time detecting circuit, wherein the first half-wave rectification comprises resistors R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60 and R61, a diode D37, dynatrons BG17 and BG18, a bidirectional thyristor BG19, an operational amplifier IC3 and an opto-coupling chip IC4. The improved detection equipment is relatively rational in structure, and can meet the special requirements of a user.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327
Inventor 胡小青
Owner JIANGSU ETERN