Foreword
Introduction
1 Scope
2 General
3 Glossary
Construction
4 Frame and enclosure
5 Corrosion resistance
6 Mechanical assembly
7 Supply connections - cord-connected clocks
8 Supply connections - permanently connected clocks
9 Live parts
10 Insulating material
11 Internal wiring
12 Coil windings
13 Spacings
14 Secondary circuits
Performance
15 Leakage current test
16 Leakage current test following humidity
conditioning
17 Current input test
18 Temperature test
19 Dielectric voltage-withstand test
20 Transformer abnormal operation test
21 Secondary circuit component failure, abnormal
operation test
22 Stability test of floor-standing clocks
23 Enclosure abuse (drop) test
24 Mounting means test
25 Strain relief test
26 Impact test
Manufacturing and production tests
27 Production-line dielectric voltage-withstand test
28 Grounding continuity test
Ratings
29 General
Markings
30 General
Appendix
A Standards for components