BS 5550-7.5.3:1981

Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Definitions
4. General requirements
5. General notes on tests
6. Standard rating
7. Classification
8. Marking
9. Dimensions
10. Protection against electric shock
11. Provision for earthing
12. Terminals
13. Retaining device
14. Resistance to ageing or rubber and thermoplastic
    (resilient) materials
15. General construction
16. Construction of socket outlets
17. Construction of appliance inlets
19. Moisture resistance
20. Insulation resistance, electric strength and
    resilient enclosures
21. Breaking capacity
22. Normal wear and tear
23. Temperature rise
24. Flexible cables and their connections
25. Mechanical strength
26. Screws, current-carrying parts and connections
27. Creepage distances, clearances and distances
    through insulation
28. Resistance to heat, fire and tracking
29. Resistance to rusting
Tables
1. Conductor cross-sectional areas
2. Conductor pull on terminals
3. Single-pin gauge withdrawal force
4. Three-pin gauge withdrawal force
5. Temperature rise test current
6. Test cables
7. Cable pull and torque
8. Oscillating test cable force
9. Gland tightening force
10. Screw and nut torques
11. Insulation distances and clearance
12. Pillar terminals
13. Screw terminals and stud terminals
14. Saddle terminals
15. Lug terminals
Figures
1. Diagram showing the use of accessories
2. Drawing illustrating assembled accessories
3. Socket outlets and connectors
4. Appliance inlets and plugs
5. Contacts
6. Gauges for socket outlets and connectors
7. Gauges for appliance inlets and plugs
8. Retention/pull-out gauges for socket outlets and
    connectors
9. Standard test finger
10. Test apparatus for checking the force for
    withdrawing a plug
11. Spray apparatus
12. Splash apparatus
13. Test apparatus for breaking capacity and normal
    operation
14. Circuit for breaking capacity and normal operation
    test
15. Strain relief test apparatus
16. Impact test apparatus
17. Arrangement for mechanical strength test for plugs
    and connectors
18. Bending test apparatus
19. Ball pressure apparatus
20. Hot mandrel apparatus
21. Arrangement and dimensions of the electrodes for the
    tracking test

Gives requirements for plugs, socket outlets, cable couplers and appliance couplers of splashproof construction referred to as accessories. They are used with single-phase a.c. supplies with a voltage not exceeding 250 V and a frequency not exceeding 500 Hz, and with d.c. supplies not exceeding 250 V. Two rated current values are covered: 25 A and 45 A. Accessories are intended for use in the film and television industry for lighting purposes 'on location' either indoors or outdoors. Intended for continuous use in ambient temperatures between -20 Degrees C and +35 Degrees C. Includes protection against electric shock, resistance to ageing, normal wear and tear, resistance to heat, fire tracking, rusting and moisture.