Three phase converter fed motor having a shielding device to eliminate capacitive current in stator slots
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United States of America Patent
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-
Jun 29, 2004
Grant Date -
N/A
app pub date -
Sep 28, 2000
filing date -
Sep 28, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for preventing bearing damage from currents through a three-phase motor is provided, including a shield for winding and copper wire within each stator slot of a motor. The shield includes an electrically conductive layer which is insulated from the winding and from the laminated stator core of the three-phase motor. The conductive layer is grounded or conductively connected to the laminated stator core of the three-phase motor on only that side on which the three-phase current is fed to the winding of the motor.
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