发明申请
- 专利标题: Magnetic device for a magnetic trip unit
- 专利标题(中): 用于磁力跳闸单元的磁性装置
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申请号: US10063401申请日: 2002-04-18
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公开(公告)号: US20030197581A1公开(公告)日: 2003-10-23
- 发明人: Thomas Gary O'Keeffe , Christian Daehler , Biranchi Narayana Sahu , Varma Dantuluri
- 主分类号: H01H009/00
- IPC分类号: H01H009/00
摘要:
A method and magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit including: a first electrically conductive strap configured to conduct an electrical current; a first magnet yoke disposed proximate to the first electrically conductive strap; and a first armature pivotally disposed proximate to the first magnetic yoke in operable communication with the latching mechanism; the first armature providing a magnetic path having a reluctance to magnetic flux; and the reluctance is adjusted to prevent saturation of the magnetic flux when the current through the strap is a first number times a rated current of the circuit breaker and the reluctance is adjusted to promote saturation of magnetic flux when the current through the strap is a second number times the rated current of the circuit breaker, wherein the first number is a number smaller than the second number.
公开/授权文献
- US06980069B2 Magnetic device for a magnetic trip unit 公开/授权日:2005-12-27