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Converter Station 66 kv gis switchgear maintenance systems wika

AIS - Air insulated substations· For these reasons, the use of transmission voltages as high as 765 kV has occurred. Transmission system substations that provide bulk power operate at voltages from 69 to 765 kV. Common voltage classes used in the United States for major substations include 69, 115, 138, 161, and 230 kV (considered high voltage or HV class) and 345,500, and 765 ...

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