Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1993-07-19
1996-08-13
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174 36, 174120SC, 174121A, H01B 734
Patent
active
055458530
ABSTRACT:
The present invention features a surge-protected cable for use in the wire leads and wire-wound stators of electrical motors. The cable of the invention is of the "filter line" type. This invention reduces failures in the stator windings of variable frequency drive (VFD) motors by attenuating peak voltages and transient voltage spikes. The "filter line" type of cable insulation prevents "dirty" power from unabated travel along the axis. This invention's type of filter line cable features a core member of one or more strands of conductive material overlaid with a primary insulation layer containing ferrites and/or magnetites; this layer is then further overlaid with a flame-retardant insulation jacket layer made of high-temperature material. Both the primary insulation and the outer jacket layer are cross-linked.
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Champlain Cable Corporation
Nimmo Morris H.
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