A multi-level voltage transfer switch device

Abstract

The invention discloses a multi-level voltage transfer switch device, comprising an insulating cylinder, a plexiglass base is fixed at the bottom of the insulating cylinder, an upper baffle is arranged inside the insulating cylinder, and a lower baffle is arranged inside the insulating cylinder, The upper baffle and the lower baffle are jointly rotatably connected with an insulating rod, a rubber sleeve is provided at the connection between the upper baffle and the lower baffle and the insulating rod, the top of the insulating rod is connected with a first conductive shaft, and the first conductive shaft is connected to the top of the insulating rod. A conductive shaft penetrates through the insulating cylinder, a short conductive rod is welded and fixed at one end of the first conductive shaft inside the insulating cylinder, and a second conductive shaft is connected to the bottom of the insulating rod, and the second conductive shaft is located in the plexiglass base One end is welded and fixed with a straight rod, and the straight rod is connected with a long conductive rod. The advantages are: the high-voltage inter-stage voltage changed by the resonant reactor converted by the invention has no specific linear relationship, the wide range is large, the voltage adjustment range is large, and the multi-stage high voltage required for the test can be output in sequence.

Description

technical field [0001] The invention relates to the technical field of transfer switches, in particular to a multi-level voltage transfer switch device. Background technique [0002] When testing products with large electrostatic capacity, it is necessary to use test equipment that can output high voltage to test the insulation level and product performance of the tested product. The resonance test equipment can provide AC high voltage, and the rated voltage and capacity of the power supply equipment can be greatly reduced. Different test products need to output different power frequency high voltages. If there is no switch to convert different voltage values, multiple power supply voltages are required, thereby reducing work efficiency and increasing cost input. [0003] The existing tap-changer for transformers has a complex structure, fixed stage voltage, and limited adjustable range, and is only suitable for fine-tuning when the power grid fluctuates, and the existing t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that the structure of the tap changer for the device is relatively complicated and the stage voltage is fixed, and the adjustable range is limited, and a multi-stage voltage conversion switch device is proposed.

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