发明名称 |
Armature ground locating test process and equipment |
摘要 |
A process and an apparatus for locating ground faults in motor armatures includes shorting a commutator of a motor armature with a shorting strap and connecting a variable voltage AC power supply and a load in series between the commutator and a core of the motor armature. The magnitude of a voltage applied by the AC power supply to the commutator is increased until current flows through a winding grounded point on the motor armature. Then a probe of a gauss meter is moved along an edge of the core adjacent the commutator to locate a core slot having a highest magnetic field reading measured by the gauss meter. The probe is moved along the core slot with the highest reading until the gauss meter measures a sudden reduction in the magnetic field indicating the grounded point.
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申请公布号 |
US6798112(B1) |
申请公布日期 |
2004.09.28 |
申请号 |
US20030423815 |
申请日期 |
2003.04.25 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
DALEY PAUL B. |
分类号 |
G01R31/06;G01R31/34;(IPC1-7):H02K1/22;G01N27/72 |
主分类号 |
G01R31/06 |
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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