Arrester with graded capacitance varistors

Details Arrester with graded capacitance varistors Arrester with graded capacitance varistors

1979-05-10

1981-06-30

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

338 21, H02H 322

Patent

active

042765781

ABSTRACT:
A station arrester employing metal oxide varistors has varistors whose capacitances increase in a direction measured from the ground side of the arrester. An approximately uniform voltage distribution can be produced across the varistors when appropriately graded according to their positions in the varistor stack. In this configuration, the varistor disks located near the top or line end of the stack are not subjected to increased thermal stresses.

REFERENCES:
patent: 3863111 (1975-01-01), Martzloff
patent: 4100588 (1978-07-01), Kresge
"The Physics of Metal Oxide Varistors" --Levinson et al., Jr. of Applied Physics, vol. 46, No. 3, 3/1975.

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