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Intelligent wrong operation prevention device of earthing switch of intermediate switchgear cabinet

A technology of anti-misoperation device and grounding switch, which is applied in the direction of grounding device of switchgear, parts of switchgear, guard plate/protection device of switchgear, etc. and quality of work, the effect of enhancing safety

Inactive Publication Date: 2015-04-22
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there are more outgoing switch cabinets, the greater the hidden danger, the biggest safety hazard is the wrong interval, resulting in live grounding switch

Method used

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  • Intelligent wrong operation prevention device of earthing switch of intermediate switchgear cabinet

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Embodiment Construction

[0008] like figure 1 As shown, the present invention includes: a switch cabinet, an intelligent state indicator 1 in the switch cabinet, an electromagnetic lock 2 located in the switch cabinet, and a grounding switch operation baffle 3; The electromagnetic lock 2, the electromagnetic lock controls the grounding switch to operate the baffle plate 3 through the locking pin.

[0009] The invention can be applied to 10kV and 35kV central switch cabinets.

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Abstract

An intelligent wrong operation prevention device of an earthing switch of an intermediate switchgear cabinet comprises the switchgear cabinet and is characterized in that an intelligent state indication instrument 1, an electromagnetic lock 2 and an earthing switch operation baffle 3 are arranged in the switchgear cabinet; the intelligent state indication instrument 1 outputs a pair of locking contacts to act on the electromagnetic lock 2, and the electromagnetic lock 2 controls the earthing switch operation baffle 3 through a locking pin. The intelligent wrong operation prevention device resolves actual difficulty in production, is based on functionality and safety, largely improves work efficiency and quality, overcomes the defect that when the switch is in an experiment cold standby state, the earthing switch must be closed, a mechanical program is locked, then unlocking is achieved and a rear cabinet door is opened for verification of a live part, and increases operation safety.

Description

technical field [0001] The invention belongs to a power supply and transformation device for a power grid, in particular to a grounding switch for preventing false closing of a live switch in a central switch cabinet. Background technique [0002] In recent years, with the development of social economy, the indoor high-voltage switchgear has been improved several times, and has developed from a fixed metal armored switchgear to today's metal armored central type and metal armored unit combination switchgear. When the handcart is in the "test / isolation" position or in the removed position, and the line side of the outlet cabinet is to be transferred from cold standby to maintenance, it can only be judged by the display of the live display to determine whether the outlet line side has power. In the actual operation, it was found that due to the dysfunction of the charged display, it was wrongly displayed as no power. After it shows that there is no voltage, unscrew the screws...

Claims

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Application Information

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IPC IPC(8): H02B11/10
CPCH02B11/10H02B11/24H02B11/28
Inventor 马伟柯春根周程王树斌蒋成杰曹军帅
Owner STATE GRID CORP OF CHINA
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