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Circuit breaker oscillation testing device and testing method thereof

A technology for testing devices and circuit breakers, which is applied in the direction of circuit breaker testing, measuring devices, instruments, etc. It can solve the problems that the amplitude, frequency and position of the bouncing cannot be displayed, and achieve an intuitive display effect

Inactive Publication Date: 2016-06-08
CHINT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a circuit breaker bouncing test device and its testing method capable of testing all the waveforms of circuit breaker bouncing during the opening and closing process, which solves the problem of using a mechanical characteristic instrument to test circuit breakers. Opening and closing bouncing characteristics, the problem that the amplitude, frequency and location of the bouncing cannot be displayed

Method used

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  • Circuit breaker oscillation testing device and testing method thereof
  • Circuit breaker oscillation testing device and testing method thereof
  • Circuit breaker oscillation testing device and testing method thereof

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Embodiment Construction

[0019] In order to make the present invention more comprehensible, preferred embodiments are described below in detail with accompanying drawings.

[0020] The invention is a circuit breaker bounce test device, such as figure 1 As shown, it consists of a circuit breaker, two 70Ω equivalent pure resistors, an oscilloscope, a 12v DC power supply and a 2.5mm 2 Connecting wires and other components.

[0021] The DC power supply is connected with two pure resistors in series through connecting wires, a circuit breaker is connected in parallel at both ends of a resistor R2, and a digital oscilloscope is also connected in parallel at both ends of the resistor R2.

[0022] The DC power supply is provided to the signal source of the oscilloscope. The resistance R1 is the equipment protection resistance. The resistance R2 provides the bounce signal to the oscilloscope during the opening and closing process of the circuit breaker. The oscilloscope records and stores the bounce change signal duri...

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Abstract

The invention discloses a circuit breaker oscillation testing device. The circuit breaker oscillation testing device is characterized in that a power supply is included, the power supply is connected with two series-connected resistors through connecting wires, and the two ends of one resistor are connected with a circuit breaker in parallel and further connected with an oscilloscope in parallel. According to the device, all waveforms which generate oscillations can be tested in the switching on and switching off process of the circuit breaker, the specific time points when the oscillations occur, the severity, that is, the amplitude and frequency of the oscillations and the oscillation process can be displayed to check whether operation of the circuit breaker is stable or not, and a basis is supplied to product improvement.

Description

Technical field [0001] The invention relates to a circuit breaker bounce test device and a test method thereof, which are used for testing the opening and closing bounce characteristics of a circuit breaker, and belong to the technical field of high-voltage switch testing. Background technique [0002] At present, the industry uses a mechanical characteristic meter to test the opening and closing bounce characteristics of circuit breakers. It can only detect the presence or absence of bounce, but cannot display the amplitude, frequency and position of the bounce, so it is difficult for bounce to occur. Analyze the opening and closing time points when the problem occurred, and find out the reasons and improve the electrical performance of the circuit breaker. National standards do not allow the opening and bounce phenomenon, but the opening bounce is often encountered during the manufacturing process, but it cannot be displayed The parameters such as the size and process of the bo...

Claims

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/3271
Inventor 董文龙刘全都米雄刚刘朋冯力维
Owner CHINT ELECTRIC
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