IEC 60071-5:20 14为高压直流（HVDC）换流站的绝缘协调程序提供了指导，但没有规定标准化的绝缘水平。本标准仅适用于高压交流中的HVDC应用。电力系统，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。本标准不包括人体安全要求。本国际标准取消并取代2002年发布的IEC TS 60071-5。根据自技术规范发布以来获得的技术经验，已经形成了将技术规范转化为国际标准的充分共识。技术内容与技术规范中包含的内容基本相同，主要是为了方便用户而进行了修改。文件的结构已经改变，允许划分和细分为完整的组成部分，以促进理解和便于参考。除上述高级别修订外，还对上一版进行了以下主要技术变更: -在多个地点增加了避雷器，以反映一些最近的800 kV高压直流输电方案实践，以及其理由、预期电压、过电压和使用中的避雷器应力； -对第8条进行了重大修改-关于避雷器的特性、方案、应力和规格的所有子条款已合并为一个实体，即第8条； -增加了位于中性母线上的平滑电抗器和中性阻断滤波器（如在一些最近的800 kV方案中）对连接到中性端的避雷器的协调的影响；-引入了在中性总线上可能使用牺牲避雷器，以在不太可能发生的特定罕见故障的情况下满足过多的避雷器能量； -所有涉及研究工具和建模细节的子条款已合并为第10条； -爬电距离和间隙已分别合并到第11条和第12条中，并增加了更多细节。

IEC 60071-5:2014 provides guidance on the procedures for insulation co-ordination of high-voltage direct current (HVDC) converter stations, without prescribing standardized insulation levels. This standard 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 by this standard. This International Standard cancels and replaces IEC TS 60071-5 published in 2002. On the basis of technical experience gained since the Technical Specification was published, sufficient consensus has emerged for transformation of the Technical Specification into an International Standard. The technical content is essentially the same as that contained in the Technical Specification with amendments mainly for user convenience. The structure of the document has been changed to allow division and subdivision into complete integral parts to facilitate comprehension and ease of referencing. In addition to the high level revisions above, the following main technical changes have been made with respect to the previous edition:
- arresters have been added to several locations to reflect some recent 800 kV HVDC scheme practice, along with their justifications, expected voltages, overvoltages and arrester stresses in service;
- significant changes have been made in Clause 8 - all subclauses on the characteristics, schemes, stresses and specification of arresters have been consolidated into a single entity, Clause 8;
- the implications of a smoothing reactor and of a neutral blocking filter located on the neutral bus (as on some recent 800 kV schemes), on coordination of arresters connected to the neutral end have been added;
- possible use of sacrificial arresters on the neutral bus is introduced to cater for excessive arrester energy in the rather unlikely event of a particular rare fault;
- all subclauses dealing with study tools and modelling details have been consolidated into Clause 10;
- creepage distances and clearances have been consolidated into Clauses 11 and 12, respectively, with more details added.