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WG D1.50 Atmospheric and altitude correction factors for air gaps and clean insulators

The purpose of the JWG is to determine atmospheric correction factors (temperature, pressure,

absolute humidity) for AC, SI, LI and DC test voltages in voltage systems greater 1000 V relevant for

installation up to 6000 m above sea level, for air gaps and clean insulators. It is to propose necessary

modifications of the atmospheric corrections and altitude corrections in the existing standards, if

necessary, and to revise and update these standards.