Power supply circuit for cable comprehensive test
A technology of power supply circuit and comprehensive test, which is applied in the direction of high-efficiency power electronic conversion, measurement of resistance/reactance/impedance, components of electrical measuring instruments, etc., which can solve the problems of high commutation noise, poor high-voltage resistance, and poor operating efficiency of mechanical switches and other problems, to achieve the effect of good bidirectional withstand voltage performance, meet the detection requirements, and excellent insulation performance
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[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0050] The applicant found that the ultra-low frequency cosine square wave power supply can theoretically carry out withstand voltage, partial discharge and dielectric loss detection. Partial discharge and dielectric loss tests can be carried out when necessary.
[0051] For ease of understanding, see figure 1 , an embodiment of a power supply circuit for a cable...
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