1. IEC 60255-149:2013 Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays

2. IEC 60255-151:2009 Measuring relays and protection equipment - Part 151: Functional requirements for over-under current protection

3. IEC 60255-26:2013 Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements

4. IEC 60255-27:2013 Measuring relays and protection equipment - Part 27: Product safety requirements

5. IEC 60258:1968/AMD1:1976 Amendment 1 - Direct acting recording electrical measuring instruments and their accessories

6. IEC 60258:1968 Direct acting recording electrical measuring instruments and their accessories

7. IEC 60261:1989 Sealing test for pressurized waveguide tubing and assemblies

8. IEC 60263:1982 Scales and sizes for plotting frequency characteristics and polar diagrams

9. IEC 60264-1:1968/AMD1:2009 Amendment 1 - Packaging of winding wires - Part 1: Containers for round winding wires

10. IEC 60264-1:1968 Packaging of winding wires - Part 1: Containers for round winding wires