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Non-exciting reversing change-over voltage regulating strip-shape tap switch

A tap changer and voltage regulation technology, which is applied in the direction of electric switches, transformers, variable transformers, etc., can solve the problems of transformer volume increase, high production cost, large outer diameter, etc., and achieve small effective space, production and use The effect of low cost and small outer diameter

Inactive Publication Date: 2007-01-31
WUHAN TAIPU TRANSFORMER CHANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tap changer has a drum-shaped or cage-shaped structure, the static contacts are arranged along the circumference of the insulator, and the outer diameter is large, especially the lead wires of the static contacts are drawn out in the circumferential direction, and the size of the live body of the switch is greatly increased after being bent and drawn out of the insulator , leading to an increase in the volume of the transformer equipped with the tap changer; in addition, the tap changer also has the problems of complex structure, high manufacturing cost, and large operating torque

Method used

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  • Non-exciting reversing change-over voltage regulating strip-shape tap switch
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  • Non-exciting reversing change-over voltage regulating strip-shape tap switch

Examples

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Embodiment Construction

[0017] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The first example is figure 1 , 2 , 3, 4, and 5, it is a vertical single-phase non-excitation positive and negative voltage regulation strip-shaped five-speed tap changer, which has a block-shaped insulator 3, and an upper support 2 is installed on the upper and lower sides of the insulator. and the lower support 14, two transmission screws 4 and 5 arranged in parallel are arranged between the upper support and the lower support, one end of one transmission screw 4 is connected with the switch operating mechanism 1 through the clutch 18, and the other transmission screw 4 The screw rod 5 is meshed and connected with the gear pair 11, 17, so that the two transmission screws rotate synchronously, and the screw threads of the two transmission screws have the same direction of rotation; corresponding to the transmission screw rods, two rows of parall...

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Abstract

The invention relates to positive and negative voltage regulating bar tap switch without excitation used in power transformer. It includes insulator, up and down bearing, fixed contact, and moving contact. Its feature is that each phase of the corresponding switch is set two rows of fixed and moving contacts. One row of fixed contact is set to connect with principal winding tap and regulating winding tap. Another one is set to connect to output tap and regulating winding tap. The invention has the advantages of simple structure, small size, reasonable binding post leading wire connecting, low cost, etc. It can be used in large middle type transformers and match with their different structures.

Description

technical field [0001] The invention relates to a non-excitation positive and negative voltage regulating strip tap switch used in a power transformer. Background technique [0002] Off-excitation positive and negative voltage regulation tap-changers can carry out positive and negative voltage regulation on the output voltage of power transformers, and are currently widely used. In the Chinese patent CN2433720Y, a non-excitation forward and reverse voltage regulating tap changer is disclosed. Its structure includes: an insulator and upper and lower supports, an insulating shaft is installed between the upper and lower supports, and each phase of the corresponding switch is provided with Two layers of static contacts and moving contacts, each layer of static contacts is arranged along the circumference of the insulator, one of the two layers of static contacts for each phase is provided with a static contact connected to the main coil tap (K) and a connection voltage regulato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/04H01H19/12H01H21/20
Inventor 刘刚
Owner WUHAN TAIPU TRANSFORMER CHANGER
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