Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1995-04-11
1996-11-19
Kincaid, Kristine L.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174110FC, 174120SC, 338214, H01B 702
Patent
active
055765149
ABSTRACT:
In order to provide a coil type high-voltage resistive wire having a lower resistance than and a noise preventing performance similar to a prior art resistive wire while maintaining an inductance level without increasing a diameter and a winding pitch of a resistance wire, a core (3) consists essentially of a center reinforcing core (1) which is obtained by twisting three aramid fibers of 1000 denier and a ferrite core (2) having an outer diameter of 1.3 mm or smaller which is obtained by extruding a mixture of resin or rubber base and ferrite powder around the center reinforcing core (1). A resistance wire 5 made of a copper-nickel alloy wire having a diameter of 35 to 55 .mu.m and an electrical resistivity of 5 to 35 .mu..OMEGA..cm is wound around the core 3 at a pitch of 10000 winds/m or larger in a direction normal to the longitudinal axis of the core (3), so that the resistance value of the resistance wire (5) as a conductor can be set at 4 to 7 k.OMEGA./m. An insulator layer (6) having an outer diameter of 4.6 mm or smaller is formed over the resistance wire (5). A reinforcing net (7) of glass fibers and a sheath (8) having an outer diameter of 7 mm are formed in this order around the insulator layer (6).
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Fujimoto Terutsugu
Higashikozono Makoto
Inoue Hiroshi
Casella Anthony J.
Hespos Gerald E.
Kincaid Kristine L.
Machtinger Marc D.
Sumitomo Wiring Systems Ltd.
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