Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1997-06-23
2000-08-08
Reichard, Dean A.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174120R, H01B 700
Patent
active
06100474&
ABSTRACT:
A magnet wire insulation designed to withstand voltage wave shapes present in inverter driven motors for a sustained period of time. A large surface area inorganic oxide, e.g., fumed silica, may be added into the magnet wire insulation for providing improved resistance to insulation degradation. Alternatively, a mixture of the large surface area inorganic oxide with a low resistivity oxide, e.g., chromium oxide, provides a greater improvement in resistance to insulation degradation. The present invention is particularly useful for extending the life of windings in a motor that is subjected to high voltage, steep wave shapes such as those found in inverter driven motors.
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Beeckman Ronald J.
Connell James J.
Harber Joseph J.
McGregor Charles W.
Essex Group Inc.
Nguyen Chau N.
Reichard Dean A.
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