发明名称 |
FAULT INDICATOR PROVIDING CONTACT CLOSURE AND LIGHT INDICATION ON FAULT DETECTION |
摘要 |
A fault indicator for detecting the occurrence of a fault current in a monitored conductor and providing a contact closure and a light indication indicative thereof includes a rotatably mounted indicator flag. The flag is positioned in either a reset indicating or a fault indicating state by a four-pole magnetic pole piece, which is magnetized to an appropriate magnetic orientation by momentary application of a current to an actuator winding on the pole piece. A first magnetically actuated reed switch in an auxiliary magnetic circuit associated with a first pole of the magnetic pole piece and including the actuator winding and a first bias magnet closes upon occurrence of the fault current to connect an internal lithium battery to an LED visible from the exterior of the fault indicator housing. A second magnetically actuated reed switch associated with a second pole of the magnetic pole piece and including the actuator winding and a second bias magnet closes upon occurrence of the fault current for external signaling or control purposes.
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申请公布号 |
CA2265232(C) |
申请公布日期 |
2001.10.09 |
申请号 |
CA19992265232 |
申请日期 |
1999.03.11 |
申请人 |
SCHWEITZER, EDMUND O., JR. |
发明人 |
SCHWEITZER, EDMUND O., JR. |
分类号 |
G01R31/02;(IPC1-7):G01R31/02 |
主分类号 |
G01R31/02 |
代理机构 |
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