Device and method for evaluating arc extinguishing effect of arc extinguisher

Abstract

The invention discloses a device and a method for evaluating the arc extinguishing effect of an arc extinguisher. The device comprises a power supply module, a voltage waveform acquisition device, a storage device, a switch module, an inductive load and a to-be-evaluated arc extinguisher. The power supply module supplies electric energy to the evaluation device, the voltage waveform acquisition and storage device is used for acquiring and storing surge voltage waveforms of a contact end of the arc extinguisher to be evaluated, and the switch module provides abrupt change current for the inductive load, so that the inductive load generates surge voltage to act on the contact end of the switch module. According to the invention, the arc extinguishing effect of the arc extinguisher is evaluated through the maximum value of the surge voltage in the surge voltage waveform measured by the device for many times, and the arc extinguishing effect of the arc extinguisher is evaluated as five grades of disqualification, qualification, fine and good.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to an evaluation device and an evaluation method for the arc extinguishing effect of an arc extinguisher. Background technique [0002] Switching devices such as relays are prone to arcing when the current and voltage in the circuit reach a certain value. When an inductive load is connected to the circuit, the arcing phenomenon will be more obvious. The arc has a thermal effect, which can easily lead to ablation and adhesion of the contacts of the switching elements, shortening the life of the switching elements, and also emits electromagnetic radiation during the arc generation process, which interferes with the surrounding equipment. [0003] The arc extinguisher is a switch element contact protection component designed for the arc phenomenon of the switch element contact. However, due to the particularity of the arc phenomenon, there is currently no particularly p...

AI Technical Summary

Problems solved by technology

The arc has a thermal effect, which can easily lead to ablation and adhesion of the contacts of the switching elements, shorten the life of the switching elements, and also emit electromagnetic radiation during the arc generation process, which will interfere with the surrounding equipment

[0003] The arc extinguisher is a switch element contact protection component designed for the arc phenomenon of the switch element contact. However, due to the particularity of the arc phenomenon, there is currently no particularly perfect evaluation device and evaluation method for the arc extinguishing effect of the arc extinguisher.

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