PD IEC TS 62993:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Basic information for the determination of INSULATION
  requirements
5 Dimensioning rules
6 Tests and measurements
Bibliography

Provides guidance to technical committees which deal with equipment having a RATED VOLTAGE of more than 1000 V AC and up to 2000 V AC, or a RATED VOLTAGE of more than 1500 V DC and up to 3000 V DC.

IEC TS 62993, which is a Technical Specification, gives guidance to technical committees which deal with equipment having a RATED VOLTAGE of more than 1 000 V AC and up to 2 000 V AC, or a RATED VOLTAGE of more than 1 500 V DC and up to 3 000 V DC. RATED VOLTAGES up to 1 000 V AC and 1 500 V DC, as well as higher or lower internal voltages, are covered by IEC 60664-1.

This document applies to equipment for use up to 2 000 m above sea level, and provides guidance for use at higher altitudes.

This document gives guidance for CLEARANCES, CREEPAGE DISTANCES and SOLID INSULATION for equipment to achieve safety. It includes methods of electric testing.

NOTE Requirements for functional insulation are not specified as they are not regarded as safety requirements.

This document does not deal with distances

• through liquid insulation,

• through gases other than air, and

• through compressed air.