Electromagnetic operation device

An electromagnetic operation and electromagnetic technology, applied in circuits, electrical switches, electrical components, etc., can solve the problems of vacuum valve opening time deviation, difficulty in saving space, and inability to stably cut off the system, and achieve the effect of stable disconnection.
CN1725407AInactive Publication Date: 2006-01-25HITACHI LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2006-01-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The aim of the invention is to aim at synchronization among three phases by restraining fluctuation of movement of each main shaft facing a three-phase vacuum valve. An electromagnetic operation device, comprising electromagnetic operators 4 each paired with a vacuum valve 1 of each phase of three phases, is equipped with main shafts 2 that can operate independently for each phase and a three-phase connecting shaft 3 that synchronizes the operation of the three phases in accordance with the operation of each main shaft. The rod 44 of the electromagnetic operator 4 is connected with the blade 45 of the main shaft 2 at the fulcrum 46 and the blade 47 of the three-phase connecting shaft 3 is connected with the blade 45 of the main shaft 2 by the linkage 7. The motion of a main shaft 2 that has operated quicker than the others is transmitted to the other main shafts via the three-phase connecting shaft 3 so as to synchronize the operation of the three phases.
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Description

technical field

[0001] The present invention relates to an electromagnetic operating device, in particular to an electromagnetic operating device suitable for using electromagnetic force to switch on and off an interrupter such as a circuit breaker. Background technique

[0002] When operating an interrupter such as a circuit breaker, an electromagnetic operator that performs on-off using an electromagnetic force generated by an electromagnet is used (see Patent Document 1).

[0003] In addition, there is also a hybrid manipulator that uses the electromagnetic attraction force of an electromagnet when turning on and uses a permanent magnet when holding it (see Patent Document 2).

[0004] [Patent Document 1] JP-A-2002-217026

[0005] [Patent Document 2] JP-A-2001-216875

[0006] When the above-mentioned electromagnetic operator is used for the vacuum valve of the three-phase power system, usually, the electromagnetic operator and the vacuum valve of each phase are in one-t...

Claims

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