Committees responsible
Foreword
Specification
1. Scope
2 Definitions
3. General requirement
4. General conditions for the tests
5. Rating
6. Classification
7. Marking, labelling and instructions
8. Protection against electric shock
9. Input and output characteristics
10. Heating
11. Electrical insulation and leakage current at
operating temperature
12. Radio and television interference suppression
13. Moisture resistance
14. Insulation resistance and electric strength
15. Overload protection
16. Endurance
17. Abnormal operation
18. Mechanical strength
19. Construction
20. Internal wiring
21. Components
22. Supply connection and external flexible cables and
cords
23. Terminals for external conductors
24. Provision for earthing
25. Screws and connections
26. Creepage distances, clearances and distances
through insulation
27. Resistance to heat, fire and tracking
28. Resistance to rusting
29. Routine production tests
Appendices
A. Electronic circuits
B. Circuit for measuring leakage currents
C. Measurement of creepage distances and clearances
D. Burning test
E. Glow-wire test
F. Bad-connection test
G. Needle-flame test
H. Proof tracking test
J. Severity of the duty conditions of insulating
material with respect to the risk of tracking
Tables
1. Permissible variations in rated input
2. Permissible temperature rise
3. Test voltages
4. Limiting temperature of transformer windings
5. Test force for screwed glands
6. Size of cable and conduit entries
7. Torque values for screws and nuts
8. Conductor cross-sectional area acceptance
requirements for terminals
9. Test figures for flexible cord pull and torque
10. Creepage distances and clearances
11. Creepage distances and clearances
12. Conductor cross-sectional ara acceptance
requirements for crimped connectors
Figures
1. Standard test finger
2. Safety sign 'Warning: Caution, risk of electric
shock' complying with A.2.8 of BS 5378: Pt.1: 1980
3. Diagrams for leakage current measurement at
operating temperature
4. Diagram for electric strength test at operating
temperature
5. Spring-operated impact-test apparatus
6. Device for testing shoulders in conduit entries
7. Dimensions for water bath stunners
8. Schematic representation of cord anchorages
9. Pillar terminals
10. Screw terminals and stud terminals
11. Examples of parts of earthing terminals
12. Ball-pressure apparatus
13. Scratch test for coated enclosures
14. Example of electronic circuit with low-power points
15. Circuit for measuring leakage currents