Device for protecting standard equipment from impact of random high-current signals output by equipment under test

Abstract

The invention discloses a device for protecting standard equipment from impact of random high-current signals output by equipment under test. The device mainly comprises a random high-current signal filtration unit and a current signal compensation unit. The random high-current signal filtration unit comprises a current signal simulation filter module and a signal on-off control module. The signal input end of the signal on-off control module is used for being connected with a current signal output unit of the equipment under test. The signal output end of the signal on-off control module is connected with the signal input end of the current signal simulation filter module. The signal output end of the current signal simulation filter module is respectively connected with the signal input end of the signal on-off control module and the signal input end of the current signal compensation unit. The signal output end of the current signal compensation unit is used for being connected with a current input unit of standard equipment. The device is capable of protecting the standard equipment from the impact of random high-current signals output by the equipment under test, while results of judging whether the equipment under test is qualified or not by the standard equipment are free of influences.

Description

technical field [0001] The invention belongs to the field of electric equipment detection and calibration, and particularly relates to a device for protecting standard equipment from the impact of random high-current signals output by the equipment under test, which can effectively prevent the random high-current signals output by the equipment under test from damaging the standard equipment. Background technique [0002] In the field of power equipment testing and calibration, as the accuracy and function requirements of power equipment are getting higher and higher, the cost of equipment is also increasing, so the damage of equipment that has not reached the end of life will bring great economic losses. In the process of testing and calibrating power equipment, sometimes the tested equipment outputs a random large current signal and damages the current measuring unit of the standard equipment. [0003] At present, the research on the phenomenon of instantaneous large curre...

AI Technical Summary

Problems solved by technology

There are very few studies on the damage assessment and prevention of the repeated output of random large signals from the tested equipment to the standard equipment, and there are no methods, technologies and implementation devices for solving such problems.

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