BS 5784-4:1984

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. General requirements
4. General conditions for the tests
5. Rating
6. Classification
7. Marking
8. Protection against electric shock
9. Starting of motor-operated parts
10. Input and current
11. Heating
12. Operation under overload conditions
13. Electrical insulation and leakage current at
     operating temperature
14. Radio and television interference suppression
15. Moisture resistance
16. Insulation resistance and electric strength
17. Overload protection
18. Endurance
19. Abnormal operation
20. Stability and mechanical hazards
21. Mechanical strength
22. Construction
23. Internal wiring
24. Components
25. Supply connection and external flexible cables and
     cords
26. Terminals for external conductors
27. Provision for earthing
28. Screws and connections
29. Creepage distances, clearances and distances
     through insulation
30. Resistance to heat, fire and tracking
31. Resistance to rusting
32. No requirement
Appendices
A. Electronic circuits
B. Measurement of creepage distances and clearances
C. Classification of controls in accordance with the
     requirements of BS 3955: Part 3 as type 1 or type 2
Tables
1. Diameter of silver wire for fuse test
2. Permissible variations in rated input
3. Permissible temperature rises
4. Insulation resistance
5. Test voltages
6. No requirement
7. Limiting temperatures of windings under abnormal
     operation
8. Permissible temperature rises under abnormal
     operation
9. Test force for screwed glands
10. Size of cable and conduit entries
11. Size of flexible cord
12. Test figures for flexible cord pull and torque
13. No requirement
14. Conductor cross-sectional areas for which
     terminals shall be suitable
15. Dimensions of pillar type terminals
16. Dimensions of screw type terminals
17. Dimensions of stud type terminals
18. Axial pull on conductors
19. Torque values for screws and nuts
20. Creepage distances and clearances
Figures
1. Standard test finger
2. Test pin
3. Test probe
4. Diagram for leakage current measurement at
     operating temperature for single-phase connection
     of class II parts
5. Diagram for leakage current measurement at
     operating temperature for single-phase connection
     of parts other than of class II construction
6. Diagram for leakage current measurement at
     operating temperature for three-phase connection
     of class II parts
7. Diagram for leakage current measurement at
     operating temperature for three-phase connection
     of parts other than of class II construction
8. Diagram for electric strength test at operating
     temperature
9. Vertical rain apparatus
10. Splash apparatus
11. Spray apparatus
12. Impact-test apparatus
13. Device for testing shoulders in conduit entries
14. Ball-pressure apparatus
15. Hot mandrel apparatus
16. Arrangement and dimensions of the electrodes for
     the tracking test
17. No requirement
18. Schematic representation of cord anchorages