This part of IEC 60071 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.dition 1.0 2014-10 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Insulation co-ordination – Part 5: Procedures for high-voltage direct current (HVDC) converter stations Coordination de l’isolement – Partie 5: Procédures pour les stations de conversion à courant continu haute tension (CCHT) IEC 60071-5:2014-10(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2014 IEC, Geneva,