IS 9385 : Part 6 : 2025/IEC 60282-4 : 2020 High-Voltage Fuses - Part 6 Additional Testing Requirements for High-Voltage Expulsion Fuses Utilizing Polymeric Insulators
NATIONAL FOREWORD
This Indian Standard (Part 6) which is identical to IEC 60282-4 : 2020 'High-voltage fuses - Part 4: Additional testing requirements for high-voltage expulsion fuses utilizing polymeric insulators' issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Fuses Sectional Committee and approval of the Electrotechnical Division Council.
High-voltage expulsion fuses are tested according to IS 9385 (Part 2) which recognizes that fuse bases may use polymer (non-ceramic) insulators. As the market for expulsion fuses using polymer insulators has grown, manufacturers have introduced many tests in addition to artificial pollution tests, covering other aspects of a fuse's performance. This document formalises such testing and provides standardisation and consistency.
The text of IEC standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards the current practice is to use a point (.) as the decimal marker.