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ANSI C37.85-2020
Switchgear - Alternating-Current High-Voltage Power Vacuum Interrupters - Safety Requirements for X-Radiation Limits
Specifies the maximum permissible x-radiation emission from ac high voltage power vacuum interrupters that are intended to be operated at voltages above 1,000 V and up to 38,000 V when tested in accordance with procedures described in this Standard.
NEMA: National Electrical Manufacturers Association [nema]