Electrical tree suppression in high-voltage polymeric insulation

Details Electrical tree suppression in high-voltage polymeric insulation Electrical tree suppression in high-voltage polymeric insulation

1987-10-26

1989-09-26

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524236, 524283, 428418, 428461, 428523, 522 75, 522 78, 522 79, 525450, C08K 534

Patent

active

048701211

ABSTRACT:
Polymeric dielectrics which are exposed to highly divergent electric fields break down more quickly than expected because of the generation of ultra-violet radiation at defect points which degrades the polymer locally and leads to the formation of electrical trees in a polymeric insulation. The use of ultra-violet stabilizers, preferably in combination with reduced concentration of oxygen in the polymer, significantly extends the time to initiation of electrical treeing by preventing photodegradation of the polymer.

REFERENCES:
patent: 3018269 (1962-01-01), Bruno
patent: 3223664 (1965-12-01), Conlon
patent: 3499791 (1970-03-01), Maloney
patent: 3795646 (1974-03-01), MacKenzie, Jr.
patent: 3956420 (1976-05-01), Kato et al.
patent: 4206260 (1980-06-01), McMahon
patent: 4208465 (1980-06-01), Chang
patent: 4288492 (1981-09-01), Hiromae et al.
patent: 4307147 (1981-12-01), Ohishi et al.
patent: 4403053 (1983-09-01), Lewis
patent: 4529538 (1985-07-01), Kim
patent: 4563259 (1986-01-01), Rayner
patent: 4601972 (1986-07-01), Small, Jr.
patent: 4710524 (1987-12-01), Donohue
patent: 4749734 (1988-06-01), Williams et al.
patent: 4797438 (1989-01-01), Kletecka et al.
Shimizu, N. et al., The Space Charge Behavior and Luminescence Phenomena in Polymers at 77K, IEEE Trans. Electr. Insul. EI-14 256 (1979).
Bamji, S. et al., Light Emission from Polyethylene Subjected to Highly Divergent Fields, Annual Report of 1982 CEIDP, IEEE Service Center, Piscataway, N.J., p. 592.

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