BS 3905:1995

Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 Information to be documented
5 Design and construction
6 Dimensions
7 Cable glands and cable sealing boxes
8 Type tests
9 Routine tests
10 Marking
Tables
1 Properties of electrical insulating materials
2 Properties of sealing ring
3 Minimum creepage distances and clearances
4 Details of coupler glandsets
5 Tensile load
6 Bending forces
Figures
1 6.6 kV, 300 A cable half coupler
2 Alternative front face for mouldings
3 Contact pin
4 Pilot contact pins
5 Sealing ring
6 Straight adaptor
7 Angle adaptor
8 Angle adaptor with access plate
9 Adaptor pin
10 Insulated end cover
11 Electrical creepage distances and clearances for
    cable coupler
12 Electrical creepage distances and clearances for
    adaptors to enclosures
13 Creepage distances and clearances
14 Coupler glandsets for pliable wire armoured cables
15 Coupler glandsets for single and double wire
    armoured cables
16 Gland for single or double wire armoured cable for
    non-metallic cable sealing box
List of references

Design and construction dimensions, cable glands and testing of semi-screened 3-phase and unscreened 3-phase with centre pilot tube.

This British Standard specifies requirements for 300 A bolted flameproof cable couplers and adaptors of semi-screened three-phase, or unscreened three-phase with centre pilot tube type, with a voltage rating of 3.8/6.6 kV. The couplers are designed to enable two cables to be coupled together or to enable a cable to be coupled to apparatus by use of adaptors, in both cases the electrical connections being made by separate connecting pins. Provision is also made for insulated end covers.

The use of other forms of intermediate box, with coupling arrangements as specified in this standard, are not precluded provided that all other relevant requirements of this standard are met.

The semi-screened cable couplers are primarily intended for use with three- or four-core wire armoured cables where the fourth conductor is earthed. The cable couplers incorporating a centre pilot are primarily intended for use with three-core wire armoured cables having an additional pilot core(s).

Couplers and adaptors conforming to this standard are not intended to be coupled or uncoupled when the circuit is energized. The dimensions necessary to provide for the connection of enclosures of different manufacture and some electrical and mechanical requirements are specified. This standard does not however, purport to specify a fully detailed design.

NOTE. The figures in this standard show only those essential features and dimensions for function and interchangeability. Dimensions are in millimetres.