Interlocking method for carrying out direct electricity check to cable chamber of high voltage switch cabinet

A technology of high-voltage switchgear and cable room, which is applied in the field of interlocking to facilitate direct electrical inspection of the cable room of high-voltage switchgear, which can solve problems such as large safety, wrongly closing the grounding switch with power, hidden dangers, etc., and achieves a reliable and effective interlocking method , The effect of preventing serious accidents caused by mistakenly closing the grounding switch

Active Publication Date: 2010-05-19
SHANGHAI NAJIE COMPLETE SETAB OF ELECTRIC
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the current high-voltage switchgear adopts the method of conducting indirect electrical inspection on the cable room with a line live display, which has a relatively large potential safety hazard. ACCIDENT

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  • Interlocking method for carrying out direct electricity check to cable chamber of high voltage switch cabinet
  • Interlocking method for carrying out direct electricity check to cable chamber of high voltage switch cabinet
  • Interlocking method for carrying out direct electricity check to cable chamber of high voltage switch cabinet

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Embodiment Construction

[0016] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0017] Because the current high-voltage switchgear adopts the method of indirect electric inspection of the cable room by the line live display, there are great potential safety hazards, especially if there is a problem with the live display link, there may be serious accidents such as the electrification of the grounding switch.

[0018] Aiming at this problem, the present invention provides an interlocking method with simple operation and good effect, which can directly test the electric current of the cable room of the high-voltage switchgear. The method is implemented based on a high-voltage switchgear with an electromagnetic locking mechanism on the door of the cable room.

[0019] like figure 2 and image 3 As shown, the high-voltage sw...

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Abstract

The invention discloses an interlocking method for carrying out direct electricity check to cable chamber of high voltage switch cabinet, comprising the following steps: when a cable chamber of a high voltage switch cabinet is powered on at a high voltage, an electriferous display auxiliary contact is powered off to cause a magnet exciting coil to be powered off so that a lock tongue of an electromagnetic lock pops up and runs throughout an interlocking hole of a door of the cable chamber to lock the door of the cable chamber; when the electriferous display of the circuit detects that no electricity passes through the cable chamber of high voltage, the auxiliary contact of the electriferous display is closed to enable a power source of the magnet exciting coil of the electromagnetic lock to be powered on so that the lock tongue of the electromagnetic lock is absorbed in and exits from the interlocking hole of the door of the cable chamber; the door of the cable chamber is opened right now to allow the direct electricity check to the interior of the cable chamber. The invention provides simple, convenient and reliable interlocking method which is convenient to carry out the direct electricity check to the cable chamber of the high voltage switch cabinet so as to prevent serious accident of closing a grounding switch by error.

Description

Technical field: [0001] The invention relates to an interlocking method for a door of a cable room of a high-voltage switch cabinet, in particular to an interlocking method for direct electric inspection of the cable room of a high-voltage switch cabinet. Background technique: [0002] The grounding switch must be closed when the cable connection part of the high-voltage switchgear is maintained and trimmed, and before closing the grounding switch, it must be verified that the cable room has no electricity at high voltage to ensure safety. But without first opening the door of the cable room, it is impossible to conduct a direct electric test inside the cable room. The current high-voltage switchgear uses a line live display to conduct an indirect electric test on the cable room, and operates the grounding switch according to the indirect electric test result. There is a big potential safety hazard in this way, if there is a problem in the live display link, there may be a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/145H02B1/26
Inventor 凌家龙
Owner SHANGHAI NAJIE COMPLETE SETAB OF ELECTRIC
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