IEC 62271-104:2020
standard is to be read in conjunction with IEC 62271-1:2017, IEC 62271-100:¿ 1 , IEC 62271-102:2018 and IEC 62271-110:2017. In order to simplify the indication of corresponding requirements, the same numbering of clauses and subclauses is used as in IEC 62271-1. Modifications to these clauses and subclauses are given under the same numbering, whilst additional subclauses are numbered from 101.