Home / Standards / GB/T 33981-2017 GB/T 33981-2017 Active Standard practice for the measurement of sound pressure levels on high-voltage alternating current circuit-breakers 高压交流断路器声压级测量的标准规程 Standard Type GBT ICS 29.130.10 CCS K43 Status 现行 Issue Date 2017-07-12 Implementation 2018-02-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A