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FAULT INDICATOR PROVIDING CONTACT CLOSURE ON FAULT DETECTION
FAULT INDICATOR PROVIDING CONTACT CLOSURE ON FAULT DETECTION
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机译:故障指示器提供故障检测的联系信息
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摘要
A fault indicator for detecting the occurrence of a fault current in a monitored conductor includes a rotatably mounted indicator flag. The flag is positioned in either a reset indicating or a fault indicating state by a magnetic pole piece, which is magnetized in one magnetic direction or the other by momentary application of a current in one direction or the other to an actuator winding on the pole piece. An auxiliary magnetic circuit comprising an auxiliary pole piece magnetized by the actuator winding, a reed switch and a bias magnet magnetically aligned to oppose the reset magnetic orientation and reenforce the trip magnetic orientation of the magnetic pole piece provides contact closure upon occurrence of the fault current.
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