Anechoic chamber alternating-current and direct-current multi-magnetic-circuit device for low-voltage electric appliance product detection

Abstract

The invention provides an anechoic chamber alternating-current and direct-current multi-magnetic circuit device for low-voltage electrical appliance product detection, which is used for providing current for a low-voltage electrical appliance product to be detected during detection and comprises an alternating-current and direct-current multi-magnetic circuit system and control equipment which are connected with each other, the AC-DC multi-magnetic circuit system is arranged in a load chamber outside the anechoic chamber, the input end of the AC-DC multi-magnetic circuit system is connected with an external 380V alternating current, and the output end of the AC-DC multi-magnetic circuit system is connected with a storage turntable in the anechoic chamber and is used for providing multi-range level AC-DC current required by testing for the low-voltage electrical appliance product to be detected; and the control equipment is arranged in the control cabinet, is positioned outside the anechoic chamber and the load chamber, comprises a signal control system for realizing communication control with the AC / DC multi-magnetic-circuit system and a leakage power supply connected with the storage turntable, and is used for providing leakage current required by the test for the low-voltage electric appliance product to be detected. By implementing the invention, the problems of high-frequency noise and electromagnetic interference caused by the existing current source can be avoided, so that the darkroom bottom noise is reduced, and the test requirements are met.

Description

technical field [0001] The invention relates to the technical field of detection of low-voltage electrical appliances, in particular to an anechoic chamber AC and DC multi-magnetic circuit device used for detection of low-voltage electrical appliances. Background technique [0002] At present, low-voltage electrical products are tested in an anechoic chamber, and the detection environment needs to be below a certain level of electromagnetic noise, and low-voltage electrical products (such as smart circuit breakers) are tested in RS (Radiation Immunity) and RE (Emission Disturbance). The AC and DC power supply is required to provide power during the test, and the standard requires that the RS performance be tested at 1 to 2 times the rated current. Therefore, when testing low-voltage electrical products, it is not only necessary to consider the introduction of noise other than electromagnetic noise in the anechoic chamber, but also to consider the rated current, cost, and spa...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an anechoic chamber AC / DC multi-magnetic circuit device for detection of low-voltage electrical appliances. Control the high-frequency noise and electromagnetic interference problems caused by the system, thereby reducing the noise floor of the darkroom and meeting the test requirements

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