发明名称 |
EMERGENCY PROTECTIVE GEAR OF THREE-PHASE MOTOR |
摘要 |
electrical engineering; protection of motors in industry and agriculture. SUBSTANCE: emergency protective gear is provided with newly introduced transient temperature compensating unit in the form of differential amplifier. Joint use of mentioned unit and overtemperature, voltage-unbalance, and phase-failure protective units incorporated in prototype enables reliable operation of protective gear in emergency situations during both single-phase and multiphase ground faults as well as during motor starting at supply voltage unbalance when unbalance level is too low for voltage unbalance and phase-failure protective units to respond to. EFFECT: enhanced reliability and enlarged functional capabilities of protective gear. 1 dwg
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申请公布号 |
RU2182395(C2) |
申请公布日期 |
2002.05.10 |
申请号 |
RU19990109481 |
申请日期 |
1999.05.05 |
申请人 |
NAJA AKADEMIJA;AZOVO CHERNOMORSKAJA G AGROINZ |
发明人 |
KARTASHOV B.A.;OS'KIN S.V.;TARANOV D.M. |
分类号 |
H02H7/08;(IPC1-7):H02H7/08 |
主分类号 |
H02H7/08 |
代理机构 |
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地址 |
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