Multiphase opening-closing equipment

A technology for transformers and high-voltage terminals, which is applied in the field of transformers for gas-insulated metering instruments, and can solve problems such as rising costs and larger diameters of insulating rods 11
CN101055795BInactive Publication Date: 2011-04-06NISSIN ELECTRIC CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NISSIN ELECTRIC CO LTD
Publication Date
2011-04-06
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention aims to solve the problem that the diameter of the insulating bar with enough strength, which supports the voltage switch unit, becomes large to generate the gas VT maximization in the gas VT breaking apparatus which connects and disconnects the high-voltage circuit and voltage switch element by insulating bar. Furthermore, the operation device needs to be located on the bottom of the gas VT and needs more space. The gas VT is configured by that: making the connecting conductor rotate by insulating frame, making the connecting conductor connect or disconnect to the high-voltage terminal and high-voltage side terminal so at to not need insulating bar. Therefore, the invention can install operation device at the side part of the container so as to reduce the space of the gas VT.
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Description

technical field

[0001] The present invention relates to a transformer for a gas insulated measuring instrument with a circuit breaker capable of connecting and disconnecting a high voltage circuit. Background technique

[0002] Transformers for gas-insulated measuring instruments (hereinafter referred to as "gas VT") are connected to gas-insulated switchgear (hereinafter referred to as "GIS") to perform voltage conversion of high-voltage circuits, but when performing GIS DC and AC withstand voltage tests, etc., Requires disconnection from high voltage circuits. Therefore, the gas VT needs to have a breaking device for connecting or disconnecting the relatively high voltage circuit.

[0003] use figure 1 , 2 (Patent Document 1) describes a conventional gas VT having a circuit breaker. figure 1 It is a side view showing the internal structure of a conventional gas VT. figure 2 yes figure 1 The A-A line sectional view of the shown conventional gas VT. At the end of the ...

Claims

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