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Test circuit, test device and fault test method of AC circuit breaker

A technology of AC circuit breaker and circuit breaker, which is used in circuit breaker testing, measuring devices, measuring electricity and other directions, and can solve problems such as inability to test low voltage of AC power circuit breakers.

Pending Publication Date: 2021-09-03
STATE GRID HEBEI ELECTRIC POWER CO LTD BAODING POWER SUPPLY BRANCH CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the application provides a test circuit, a test device and a fault test method for an AC circuit breaker, which solves the technical problem that the prior art cannot perform low-voltage tests on the AC circuit breaker

Method used

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  • Test circuit, test device and fault test method of AC circuit breaker
  • Test circuit, test device and fault test method of AC circuit breaker
  • Test circuit, test device and fault test method of AC circuit breaker

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Embodiment Construction

[0025] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back, top, bottom...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings) If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

[0026] Additionally, reference herein to "an e...

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Abstract

The invention provides a test circuit, a test device and a fault test method for an AC circuit breaker, and solves the technical problem that the low-voltage test cannot be carried out on the AC circuit breaker in the prior art. According to the test circuit of the AC circuit breaker, the alternating-current voltage output by the AC power supply is converted into a plurality of voltages with different voltage values through the AC voltage regulator; the voltmeter measures the voltage output by the AC voltage regulator. A control signal is applied to the control module, and the circuit connection signal state of the first end of the control loop of the circuit breaker to be tested and the first end of the output side of the AC voltage regulator is controlled; the AC power supply provides a power supply, applies a control signal to the control module, controls a test loop formed by the AC voltage regulator, the voltmeter and the control loop of the circuit breaker to be tested, the low voltage of the AC circuit breaker can be tested, thereby judging the sensitivity and action reliability of the circuit breaker according to a test result.

Description

technical field [0001] The present application relates to the technical field of electrical measurement, in particular to a test circuit, a test device and a fault test method for an AC circuit breaker. Background technique [0002] A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. The operating mechanism power supply of the circuit breaker is divided into a DC power operating mechanism and an AC power operating mechanism. In the five general systems of the State Grid Substation Inspection, the relevant requirements for the operating voltage of the circuit breaker mechanism are clarified, and the operating voltage test of the circuit breaker mechanism is required, that is, the low voltage test. [0003] The low-voltage tester currently used in the work can only perform the low-voltage test of the DC power supply oper...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01R1/30
CPCG01R31/327G01R31/3277G01R1/30
Inventor 蔡少植刘佳林陈翼飞马晓阳王贺英徐喜光
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD BAODING POWER SUPPLY BRANCH CO
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