DIN EN 300132-3-2005 环境工程.向电信设备输入的电源接口.第3部分:整流电流、交流或400V及以下直流操作
Environmental Engineering (EE) - Power supply interface at the input to telecommunications equipment - Part 3: Operated by rectified current source, alternating current source or direct current source up to 400 V (Endorsement of the English version EN 300