An assessment of field aged 15 and 35kV ethylene propylene rubber insulated cables

Conference · Fri Dec 30 23:00:00 EST 1994

OSTI ID:152862

Katz, C ^[1]; Walker, M ^[2]

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1. Cable Technology Labs., Inc., New Brunswick, NJ (United States)
2. Houston Lighting and Power Co., Houston, TX (United States)

Data are provided from laboratory evaluations performed on ten 15kV and five 35kV ethylene propylene copolymer rubber (EPR) feeder cables, made by one manufacturer and ranging in service age from 2 to 22 years. The evaluations consisted of visual examination of cable components, including the presence of water trees in the insulation and physical and electrical tests to establish changes which may have occurred in service. The data are used to establish an in-service rate of degradation for cables, up to 13 years in service, made with one type of EPR formulation. Based on an extrapolation of the breakdown voltage test results, it is expected that this type of cable will have a service life in excess of 30 years.

• OSTI ID: 152862
• Report Number(s): CONF-9404175--; ISBN 0-7803-1883-8
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRIC CABLES
ELECTRICAL INSULATION
MATERIALS TESTING
POWER DISTRIBUTION SYSTEMS
POWER TRANSMISSION LINES
WEATHERING