This standard applies to on-load tap-changers for power transformers, and their motor-drive mechanisms. It relates mainly to tap-changers immersed in transformer oil according to IEC 60296, but may also be used for gas-insulated tap-changers in so far as conditions are applicable.
Applies to on-load tap-changers of both resistor and reactor types, off-circuit tap-changers, and their motor drive mechanisms. Applies mainly to tap-changers immersed in transformer oil according to IEC 60296 but may also be used for tap-changers with gas insulation or immersed in other insulating liquids.
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