Electricity: conductors and insulators – With fluids or vacuum – With fluid stops
Patent
1974-05-06
1976-03-09
Grimley, Arthur T.
Electricity: conductors and insulators
With fluids or vacuum
With fluid stops
174102SC, 174102D, 174105SC, 174110PM, H02G 1520, H01B 718
Patent
active
039432718
ABSTRACT:
Extruded dielectric power cables installed underground have their life shortened by the formation of electrochemical trees in the insulation. Tree formation can be prevented if the insulation is initially dry and the cable construction is such that moisture cannot gain access to the insulation under operating conditions encountered during installation and underground use. This invention eliminates initial moisture and has a construction that greatly retards ingress of moisture to the insulation during installation when the cable is in service and prevents longitudinal movement of water along the cable due to accidental damage to the cable or electrical failure.
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Scheffler, E., Electrical Welded Thin Aluminum Envelopes and Their use In Cable Designs, Wire & Wire Products, 4/70, pp. 82-85.
Bahder George
Eager, Jr. George S.
Silver David A.
General Cable Corporation
Grimley Arthur T.
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