IEC 60077-1:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 Classification
5 Characteristics of the utilization category
6 Product information
7 Normal service conditions
8 Constructional and performance requirements
9 Tests
Annex A (informative) - Coordination between definitions
Annex B (informative) - Type and routine test of dielectric
        tests for equipment
Annex C (informative) - Example of thermal endurance
        calculation to demonstrate the suitability of an
        insulation system for a specified application
Bibliography

IEC 60077-1:2017 specifies the general service conditions and requirements for all electric equipment installed in power circuits, auxiliary circuits, control and indicating circuits etc., on railway rolling stock. The purpose of this document is to harmonize as far as practicable all rules and requirements of a general nature applicable to electric equipment for rolling stock. This new edition includes the following main technical changes with regard to the previous edition:
- descriptions regarding insulation coordination, environmental conditions and those of current return and protective bonding are deleted and replaced by references to IEC 62497‑1, IEC 62498-1 and IEC 61991;
- classification of equipment type is introduced;
- temperature limits and temperature rise tests are reviewed.