Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1987-03-12
1988-08-23
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324158MG, 324525, 324551, 318490, 340647, 340648, G01R 3106
Patent
active
047663871
ABSTRACT:
A motor winding insulation resistance monitoring system for measuring the insulation resistance of a winding of a polyphase motor while the motor is operating including a motor winding insulation resistance measuring circuit. A switching mechanism is provided for selectively interconnecting each winding with a separate phase power source and the winding insulation resistance measuring circuit. The switching mechanism is directed to disconnect a winding from its power source and connect one end of that winding with the motor winding insulation measuring circuit to measure the resistance of that winding's insulation to ground while the motor continues operating.
REFERENCES:
patent: 2525413 (1950-10-01), Johnson
patent: 2759145 (1956-08-01), Manley
Browne Frederick D.
Sevier Fred E.
Denninger Douglas E.
Eisenzopf Reinhard J.
Iandiorio Joseph S.
Regan Maura K.
The Charles Stark Draper Laboratory Inc.
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