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Insulating gas transformer service Zero emission enervac

Gas-insulated switchgear up to 245 kV, 50 kA, 4000 A Type 8DN9· PDF fileWhen the current passes through zero, the gas flows back from the heating volume (11) through the nozzle (9) and quenches the arc. The valve (3) of the contact cylinder (10) prevents the high-pressure gas from entering the compression volume (4). Thus, the operating mechanism does not have to supply the arc-quenching energy. 1. Moving arcing ...

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