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765-kV Transmission Line Insulation: Testing Program

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3 Author(s)
Arthur Hauspurg ; Consolidated Edison Company ; Vincent Caleca ; Robert H. Schlomann

The scope and results of a testing program for the insulation design of the American Electric Power 765-kV transmission lines are presented. With a 32-unit V string in the middle phase, and 30-unit V strings in the outer phases (standard 5¿- by 10-inch suspension insulators), the composite switching-surge strength of the tower is characterized by a 3-sigma withstand not less than 1250 kV or 2 pu of system voltage crest.

Published in:

IEEE Transactions on Power Apparatus and Systems  (Volume:PAS-88 ,  Issue: 9 )