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Insulation Gas hitachi and abb leak detection wika

1ZUA5663-210 r2 Sudden Pressure Relay - ABB· PDF fileThe ABB Sudden Pressure Relay is a device designed to respond to the sudden increase in gas pressure in a power transformer which would be caused by an internal arc. The Relay ... A 1500 volt, 60 hertz insulation test to ground is applied to the electrical circuit of the Sudden Pressure Relay and the panel for one minute.

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