Method for testing surge pulse current resistance of fuse

Abstract

The invention discloses a method for testing the surge pulse current resistance of a fuse, belonging to the technical field of the fuse. The method comprises steps of selecting samples and carrying out an electrical test, grouping the samples, determining the parameter of surge pulse waveform current applied to the tested samples and recording the test data, and analyzing the test data and obtaining a test result. According to the method, the surge pulse current resistance of the fuse can be accurately tested, a scientific basis is provided for evaluating whether the fuse can withstand the shock of a certain amount of current, a scientific guidance is provided for the reasonable selection of fuses, losses caused by the wrong selection of fuses are eliminated, and the shortening of the design cycle of a fuse manufacturer and the reduction of repair costs are facilitated.

Description

technical field [0001] The invention belongs to the technical field of fuses, in particular to a method for testing the anti-surge pulse current of a fuse. Background technique [0002] Fuse A fuse is an overcurrent protection device connected in series with a protected circuit. It refers to an electrical appliance that fuses the melt with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. The fuse is based on the fact that after the current exceeds the specified value for a period of time, the heat generated by itself melts the melt, thereby disconnecting the circuit; a current protector made by using this principle. Fuses are widely used in high and low voltage power distribution systems and control systems, as well as electrical equipment. As short circuit and overcurrent protectors, fuses are one of the most commonly used protection devices. [0003] Aerospace engineering is a high-tech and high-risk system engineering...

AI Technical Summary

Problems solved by technology

However, there is no method for evaluating the anti-surge pulse current of fuses in each fuse standard, and the anti-surge pulse ability evaluation test has not been included in the basic category of the traditional reliability test of fuses, and the level of mastery of this limit technology in our country is still low. Immature, limited understanding of surge pulse current

According to statistics, the cumulative effect of surge current impact is also an important cause of fuse failure. Therefore, it is necessary to study the surge life evaluation of fuses that lack pulse standards.

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