IEC 62855提供了分析核电站（NPP）交流和直流电力系统的电工工程指南，以证明电源和配电系统具有安全运行和关闭NPP的能力，在预期的运行事件或事故条件后，使其处于受控状态，并最终达到安全状态。购买本文件时可获得的所有当前修订均包含在购买本文件中。

IEC 62855 provides the electrotechnical engineering guidelines for analysis of AC and DC electrical power systems in nuclear power plants (NPPs) in order to demonstrate that the power sources and the distribution systems have the capability for safe operation and shut down of the NPP, bringing it to a controlled state after an anticipated operational occurrence or accident conditions and finally reaching a safe state.All current amendments available at time of purchase are included with the purchase of this document.