Non-field cage-shape tap changer for transformer

A technology of tap changer and transformer, which is applied in transformers, variable transformers, electric switches, etc., can solve the problems of low positioning accuracy of moving contacts, difficult contact shunting, affecting the performance of switches, etc., and achieves structural rigidity improvement, The effect of low production cost and small operating torque
CN1933055AActive Publication Date: 2007-03-21WUHAN TAIPU TRANSFORMER CHANGER
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN TAIPU TRANSFORMER CHANGER
Publication Date
2007-03-21

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Abstract

A cage-style tap-changer without excitation for transformer relates to up and down brackets and there are insulating pole of edge connecting between them. There are interval ring static state relays on the axes of insulating pole and there are dynamic relays at the up and down brackets and inside of the ring static state relays. The dynamic relays connects with one up / down gearing, and there are dynamic relays connects with closed two static state relays in the outside of dynamic relays subassembly and the corresponding ring static state relays. The beneficial effect is 1. The dynamic and static state relays touch with stabilization and short moment when switch operation moves along the axes and high orientation precision. 2. Static state relays enhance the stiffness of cage-style with strong anti-short ability of switch for large current and single-phase switch with high and insulated level.
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Description

technical field

[0001] The invention relates to a non-excitation cage tap changer for a transformer, which is a further improvement on the existing non-excitation cage tap changer. Background technique

[0002] The existing non-excitation cage tap changer mainly includes upper and lower supports and insulating rods arranged at intervals along the circumferential direction of the upper and lower supports. Static contacts are arranged at intervals in the axial direction of each insulating rod, and the static contacts on each insulating rod The heads correspond to form a circumferential static contact group, and a central axis is installed between the upper and lower supports. The central axis corresponds to the static contact and sets the moving contact between the two adjacent static contacts through the support. When the shaft is rotated and positioned, the movable contact rotates in the circumferential plane and bridges with different static contact groups respectively to r...

Claims

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