BS IEC/IEEE 62271-37-082:2012(2014) High - voltage switchgear and controlgear Part 37 - 082 : Standard practice for the measurement of sound pressure levels on alternating current circuit - breakers
2012BS IEC/IEEE 62271-37-082:2012 High-voltage switchgear and controlgear. Standard practice for the measurement of sound pressure levels on alternating current circuit-breakers