| Original document(21 pages) 中文版 |
A thermal-magentic trip unit, suitable for use in a circuit breaker, for eliminating the requirement for latching surfaces whiles still providing the additional force and motion required to trip the breaker during a short circuit or an overcurrent trip event. The trip unit comprises a link that is biased based on the position of a trip bar. A spring biases the link in a first direction when the trip unit is in a reset condition and biases the link in a second direction when the trip bar is rotated about a pivot point. A trip unit further including an improved indication-of-trip system comprising a two-piece trip bar mechanism and flag system is described to discriminate between overcurrent and short circuit faults. In this embodiment of the invention, visual confirmation of the cause of the trip is provided. |
Application Number
申请号 |
01809641 |
Application Date
申请日 |
2001.03.29 |
| Title 名称 |
Circuit breaker thermal-magnetic automatic trip unit |
Publication Number
公开号 |
1429396 |
Publication Date
公开日 |
2003.07.09 |
| Approval Pub. Date |
|
Granted Pub. Date |
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| International Classification 分类号 |
H01H71/04,H01H71/50 |
Applicant(s) Name
申请人 |
General Electric Co. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
B.T. Ramakrishnan |
| Attorney & Agent 代理人 |
zhou beilin zhang shegao |
| More information 更 多 信 息 |
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