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Method of lowering impact induction potential of large volume autotransformer

An autotransformer, induced potential technology, applied in the direction of transformers, variable transformers, fixed transformers, etc., can solve the problems of increased cost, increased transformer volume, and no use, and achieves low cost, strong shock wave absorption, and safety. reliable results

Active Publication Date: 2005-03-30
TBEA SHENYANG TRANSFORMER GRP CO LTD
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Problems solved by technology

[0002] Currently commercially available autotransformers, in order to reduce or weaken the destructive effect of lightning shock waves on the autotransformer, the method of shielding the working coil is usually used in the transformer to improve the insulation strength or the method of setting a lightning arrester in the transformer. The first method will reduce the volume of the transformer. increase, the second method will increase the cost, and the third method is sometimes not allowed

Method used

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  • Method of lowering impact induction potential of large volume autotransformer

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Embodiment Construction

[0008] Autotransformer capacity

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Abstract

The disclosed method prevents hazard such as breakdown, short circuit and fire ignition caused by lightning surge on electrical product. In the method, capacitance in use for absorbing electric potential of shock wave in capacity 9000-12000PF and impulse withstand voltage 475KV-525KV is connected to excitation winding of controlling change of magnetic flux in parallel. Advantages are: high capacity of absorbing electric potential of shock wave, on the safe side and beneficial to raise quality of product.

Description

technical field [0001] The invention relates to a method for reducing the shock induction potential of a large-capacity autotransformer, in particular to a method for reducing the shock induction potential of an ultra-large-capacity autotransformer. Background technique [0002] Currently commercially available autotransformers, in order to reduce or weaken the destructive effect of lightning shock waves on the autotransformer, the method of shielding the working coil is usually used in the transformer to improve the insulation strength or the method of setting a lightning arrester in the transformer. The first method will reduce the volume of the transformer. Increase, the second method will increase the cost, and the third method is sometimes not allowed. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present invention provides a method for reducing the shock induction potential of a super-large-capacity self-coupling on-lo...

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Application Information

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IPC IPC(8): H01F27/28H01F27/34H01F27/40H01F29/00H01F30/02
Inventor 高兴耀钟俊涛孙勇
Owner TBEA SHENYANG TRANSFORMER GRP CO LTD
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