DIN EN 300253:2015
环境工程 (EE). 由电信和数据中心中-48伏直流电供电的ICT设备的接地和连接 (英文版本EN 300 253 V2.2.1 (2015-06) 的核准本作为德国标准)
Environmental Engineering (EE) - Earthing and bonding of ICT equipment powered by -48 VDC in telecom and data centres (Endorsement of the English version EN 300 253 V2.2.1 (2015-06) as German standard)