提供高压直流（HVDC）换流站绝缘协调程序指南，但不规定标准化绝缘水平。 仅适用于高压交流电力系统中的HVDC应用，不适用于工业转换设备。给出的原则和指南仅用于绝缘协调目的。不包括人身安全要求。

Provides guidance on the procedures for insulation co-ordination of high-voltage direct current (HVDC) converter stations, without prescribing standardized insulation levels. Applies only for HVDC applications in high-voltage a.c. power systems and not for industrial conversion equipment. Principles and guidance given are for insulation co-ordination purposes only. The requirements for human safety are not covered.