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Insulating gas abb power consulting dew point

TRANSFORMER OIL FILLING AND TESTING PROCEDURE nitrogen is called for, the nitrogen used should have a dew point not higher than -50°C (-58°F) and total impurities not exceeding 0.1 % by volume. Nitrogen can be obtained in high pressure steel cylinders, or in some locations in insulating low pressure containers in liquid form, or in some location in insulating low pressure ...

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