Home / Standards / GB/T 4942.1-2001 GB/T 4942.1-2001 Abolished Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code) 旋转电机外壳防护分级(IP代码) Standard Type GBT ICS 29.160.01 CCS K20 Status 废止 Issue Date 2001-07-12 Implementation 2001-12-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A