发明名称 |
MAGNET ARRANGEMENT FOR A LOW-VOLTAGE CIRCUIT-BREAKER |
摘要 |
An exemplary magnet arrangement improves the running characteristics of a switching arc generated upon the interruption of a current circuit in a pre-chamber of a low-voltage circuit-breaker, in which the switching arc is directed between two electric arc running rails. The exemplary arrangement includes an open magnetic circuit having a magnetic material and at least one permanent magnet that delivers magnetic flux to the magnetic circuit, with magnetic induction generated in a vicinity of the pre-chamber acting upon the switching arc. The magnetic material can be configured as a U-section sheet metal plate which extends along the length of the pre-chamber and includes a material recess which extends through this pre-chamber metal sheet and is arranged to contain the at least one permanent magnet. The exemplary arrangement is of a simple construction and permits adjustment of magnetic induction acting in the pre-chamber of the low-voltage circuit-breaker.
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申请公布号 |
US2013112656(A1) |
申请公布日期 |
2013.05.09 |
申请号 |
US201213669152 |
申请日期 |
2012.11.05 |
申请人 |
ABB SCHWEIZ AG;ABB SCHWEIZ AG |
发明人 |
SCHNEIDER GERHARD;WULF THOMAS |
分类号 |
H01H33/18 |
主分类号 |
H01H33/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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