1. IEC 60621-2:1987 Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries). Part 2: General protection requirements

2. IEC 60634:1993 Heat test source (H.T.S.) lamps for carrying out heating tests on luminaires

3. IEC 60620:1984 Dimensions for the mounting of single-hole, bush-mounted, spindle-operated electronic components

4. IEC 60640:1979 CAMAC - Serial Highway Interface System

5. IEC 60642:1979/AMD1:1992 Amendment 1 - Piezoelectric ceramic resonators and resonator units for frequency control and selection - Chapter I: Standard values and conditions - Chapter II: Measuring and test conditions

6. IEC 60640:1979/AMD1:1984 Amendment 1 - CAMAC - Serial Highway Interface System

7. IEC 60630:2005 Maximum lamp outlines for incandescent lamps

8. IEC 60642-2:1994 Piezoelectric ceramic resonator units - Part 2: Guide to the use of piezoelectric ceramic resonator units

9. IEC 60626-1:2009 Combined flexible materials for electrical insulation - Part 1: Definitions and general requirements

10. IEC 60621-3:1979 Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries). Part 3: General requirements for equipment and ancillaries