发明名称 Zero-phase sequence protective device for faults within armature of three-phase synchronous machine
摘要 The neutral impedance of a three-phase synchronous machine is so combined with the three-phase, Y-connection protective impedance with the neutral ground connected to a terminal of the synchronous machine that the line current in the branch including a fault may be reduced to zero when a parallel fault occurs within the armature winding, thereby protecting the armature winding and the core of the rotor from burning.
申请公布号 US4037138(A) 申请公布日期 1977.07.19
申请号 US19750618559 申请日期 1975.10.01
申请人 KOBAYASHI, KOREYASU 发明人 KOBAYASHI, KOREYASU
分类号 H02H7/06;H02H7/08;H02H9/00;(IPC1-7):H02H7/08 主分类号 H02H7/06
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