IEC 62271-4

Abstract

This part of IEC 62271 applies to the procedures for handling of SF₆ during installation, commissioning, normal and abnormal operations, disposal at the end-of-life of high-voltage switchgear and controlgear. <br>These procedures are regarded as minimum requirements to ensure the safety of personnel working with SF₆ (see Annex B) and to minimize the SF₆ emission to the environment. <br>This standard generally applies also to gas mixtures containing SF₆. The particularities for their handling are covered in Annex J. <br>NOTE 1 Throughout this standard, use of the term High-Voltage (refer to IEC 60050-601:1985, 601-01-27) means a rated voltage above 1 000 V. However the term Medium Voltage (refer to IEC 60050-601: 1985, 601-01-28) is commonly used for distribution systems with voltages above 1 kV and generally applied up to and including 52 kV. <br>NOTE 2 Throughout this standard, the term "electric power equipment" stands for "high-voltage and medium-voltage switchgear and controlgear". <br>NOTE 3 Throughout this standard, the term "pressure" stands for "absolute pressure".