BS EN 61000-5-7:2001 电磁兼容性(EMC).安装和调试指南.外壳抗电磁干扰防护等级(EM规则)
Electromagnetic compatibility (EMC) - Installation and mitigation guidelines - Installation and mitigation guidelines - Degrees of protection by enclosures against electromagnetic disturbances (EM code) - Degrees of protection against electromagnetic dist