IEC 255-8 International Standard Electrical relays Part 8: Electrical thermal relays in French and English. 1990.
SECTION ONE - GENERAL
scope and object
Definitions
SECTION TWO - REQUIREMENTS
standard values
Accuracy
SECTION THREE - TEST METHODS
Tests related to operating characteristics and accuracy
Tests for thermal requirements
Figures
Appendix A - Characteristic curves, cold curves
Appendix B - Characteristic curves, hot curves
Appendix C - Example for determining accuracy
Document withdrawn, superseded by IEC 60255-149 ed1.0 (2013-07)