Electrical stress control
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United States of America Patent
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Sep 26, 2000
Grant Date -
N/A
app pub date -
Sep 17, 1998
filing date -
Jan 16, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composition for use as an electrical stress controlling layer (12) for use with cable joints and terminations has a non-linear V-I characteristic. The composition comprises a polymeric matrix filled with doped zinc oxide varistor powder. The particulate filler is sieved at 125 micrometers, calcined at 1100.degree. C., and lightly ground to maintain the spherical shape of the particles. More than 50% by weight of the particles have a maximum dimension between 5 and 100 micrometers.
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