Compensated high-current generation device

Abstract

The invention discloses a compensated high-current generation device, which belongs to a test resource device of circuit breakers and protectors. The compensated high-current generation device comprises an automatic coupling voltage regulator and a compensated automatic coupling voltage regulator which are connected to a phase line L and a zero line N, the compensated automatic coupling voltage regulator is connected with a primary coil of a compensation transformer, the automatic coupling voltage regulator is connected with a secondary coil of the compensation transformer, the compensation transformer is connected with a multi-tap autotransformer, the multi-tap autotransformer is connected with a contactor, the contactor is connected with a current rising transformer, and the current rising transformer is connected with a tested object. The compensated high-current generation device has the advantages that the compensated high-current generation device improves adjustment resolution, ensures the high precision of the current output by a secondary coil of the current rising transformer, and has wide range of output current.

Description

technical field [0001] The invention relates to a compensating type large current generating device, in particular to a compensating type large current generating device for testing circuit breakers and protectors, and belongs to test source devices for circuit breakers and protectors. technical background [0002] In the testing of low-voltage products such as circuit breakers and protectors, large current generators are often used to generate adjustable high currents for testing various protection characteristics, requiring a wide range of current adjustment and high precision. The current high-current generating device, such as the patent No. 200420114077.3 applied on December 13, 2004, is called "high-current generator" and the patent No. 92205768.0 applied on March 30, 1992, named "portable adjustable large "Current generator" has no compensation and adjustment link, so it is difficult to generate high-precision large current. In addition, in the testing of low-voltage...

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Problems solved by technology

The current high-current generating device, such as the patent No. 200420114077.3 applied on December 13, 2004, is called "high-current generator" and the patent No. 92205768.0 applied on March 30, 1992, named "portable adjustable large "current generator", there is no compensation adjustment link, it is difficult to generate high-precision large current

In addition, in the testing of low-voltage products such as circuit breakers and protectors, electric methods are often used to achieve automatic adjustment. If there is no compensation adjustment link, it is difficult to perform high-precision automatic constant current control. The correctness of the protective characteristic test of circuit breakers and protectors , influence on reliability

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