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GB/T 4074.21-2018 English PDF (GBT4074.21-2018)

GB/T 4074.21-2018 English PDF (GBT4074.21-2018)

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GB/T 4074.21-2018: Winding wires test methods -- Part 21: Electrical endurance under high frequency voltage impulses
This part of GB/T 4074 stipulates the test method (also known as corona resistance test method) for using high-frequency pulse voltage to determine the resistance of the winding wire to high-frequency pulse voltage in atmospheric air, including the terms and definitions of the test, test equipment, specimen preparation, test procedures, test parameters and test records.

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