Title:
気中遮断器
Document Type and Number:
Japanese Patent JP5275301
Kind Code:
B2
Abstract:
In an air circuit breaker provided with a make-and-break unit having a stator 11 and a blade-shaped movable element 10 rotatably supported with a support shaft 9 oppositely to the stator, comprising an electromagnetic operation unit 20 having a fixed iron core 33 provided in an upper position, a movable iron core 32 provided in a lower position oppositely to the fixed iron core, a coil 30 that connects/disconnects the fixed iron core 33 and the movable iron core 32, and a permanent magnet 38; capacitors 17a to 17c that energy-store electric power to excite the coil 30; a control circuit board 19 that controls a carrying direction of a current supplied from the capacitors to the coil 30 in response to an input command or a breaking command to the make-and-break unit; and a servo mechanism 16 connected to the movable iron core 32, that transmits a driving force by the electromagnetic force of the electromagnetic operation unit 20 to the make-and-break unit.
Inventors:
Sawada Masaji
Morita Ayumu
Masato Yabu
Motoki Shibuya
Morita Ayumu
Masato Yabu
Motoki Shibuya
Application Number:
JP2010180976A
Publication Date:
August 28, 2013
Filing Date:
August 12, 2010
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01H33/38; H01H31/02; H01H31/28; H01H33/42
Domestic Patent References:
| JP2008159270A | ||||
| JP2007073829A | ||||
| JP2006059823A | ||||
| JP54128065U | ||||
| JP2003308762A |
Attorney, Agent or Firm:
Kasuga Toshiaki
Inoki Yuichi
Inoki Yuichi