BS 2562:1979

Foreword
Cooperating organizations
Specification
Section one. General
1. Scope
2. References
3. Definitions
Section two. Performance and design requirements for
             cable boxes
4. Electrical requirements and clearances
5. Electromagnetic considerations
6. Provision for receiving cables
7. General design requirements
Section three. Tests for cable boxes
8. Type tests
9. Routine tests
Section four. Requirements for a range of single-pole,
              three-pole and four-pole cable boxes
10. Basis of range of boxes specified
11. Bushings
12. Cast resin bushing assemblies
13. Shell dimensions
Appendices
A. Information to be given with enquiry and order
B. Wiping glands for metallic sheathed cables
Tables
1. Clearances
2. Terminal stems and nuts
3. Cable box ratings, shell dimensions and general
     particulars for filled boxes with porcelain
     bushings; single-pole boxes 1.1 kV to 12 kV
4. Cable box ratings, shell dimensions and general
     particulars for filled boxes with porcelain
     bushings; three-pole boxes 1.1 kV to 12 kV
5. Cable box ratings, shell dimensions and general
     particulars for filled boxes with porcelain
     bushings; four-pole boxes 1.1 kV to 12 kV
6. Cable box ratings, shell dimensions and general
     particulars for filled boxes with porcelain
     bushings; single-pole and three-pole boxes 24 kV
     and 36 kV
7. Cable box ratings, shell dimensions and general
     particulars for filled boxes with cast resin
     bushing assemblies; four-pole boxes 1.1 kV
8. Cable box ratings, shell dimensions and general
     particulars for unfilled boxes with porcelain
     bushings; single-pole boxes 1.1 kV
9. Cable box ratings, shell dimensions and general
     particulars for unfilled boxes with porcelain
     bushings; three-pole boxes 1.1 kV and 3.6 kV
10. Cable box ratings, shell dimensions and general
     particulars for unfilled boxes with porcelain
     bushings; four-pole boxes 1.1 kV and 3.6 kV
11. Cable box ratings, shell dimensions and general
     particulars for unfilled boxes with cast resin
     bushing assemblies; four-pole boxes 1.1 kV
12. Gland sizes
Figures
1. Standard porcelains
2. Bushing clamps
3. Assembly of 250 A and 400 A porcelain bushings
     for use up to 12 kV rated voltage
4. Assembly of 250 A and 400 A epoxide resin bushings
     for use up to 12 kV rated voltage
5. Assembly of 800 A porcelain bushing for use up to
     12 kV rated voltage
6. Assembly of 800 A epoxide resin bushing for use
     up to 12 kV rated voltage
7. Assembly of 1600 A porcelain bushing for use up to
     12 kV rated voltage
8. Assembly of 1600 A epoxide resin bushing for use up
     to 12 kV rated voltage
9. Assembly of 2500 A porcelain bushing for use up to
     12 kV rated voltage
10. Assembly of 2500 A epoxide resin bushing for use up
     to 12 kV rated voltage
11. Assembly of 250 A porcelain bushing for use up to
     24 kV rated voltage
12. Assembly of 525 A and 800 A porcelain bushings for
     use up to 24 kV rated voltage
13. Assembly of 250 A porcelain bushing for use up to
     36 kV rated voltage
14. Assembly of 800 A porcelain bushing for use up to
     36 kV rated voltage
15. Assembly of 800 A condenser bushing for use up to
     36 kV rated voltage
16. 800 A and 1400 A cast resin bushing assemblies
     for use up to 1.1 kV rated voltage
17. Bushing mounting plates for single-pole boxes
     (for use up to 3.6 kV rated voltage)
18. Bushing mounting plates for three-pole boxes
     (for use up to 3.6 kV rated voltage)
19. Bushing mounting plates for four-pole boxes
     (for use up to 3.6 kV rated voltage)
20. Copper based alloy bushing end caps, designations
     A, B, C and D
21. Copper based alloy cable connectors and ferrules
22. Copper based alloy bushing end caps, designations
     1 to 7
23. Facings for single-pole boxes
24. Facings for three-pole boxes
25. Facings for four-pole boxes
26. Typical arrangement of gland plate mounting for
     compound filled boxes
27. Assembly of filling orifice
28. Shell dimensions for filled boxes (for use up to
     12 kV rated voltage)
29. Shell dimensions for filled boxes (for use at 24 kV
     and 36 kV rated voltage)
30. Shell dimensions for unfilled boxes with cast resin
     bushing assemblies in accordance with figure 16
     for use up to 1.1 kV rated voltage and individual
     bushing assemblies for use up to 3.6 kV rated
     voltage
31. Gland size X
32. Gland size Y
33. Gland size Z
34. Typical arrangement of uninsulated gland assembly
     types A and B
35. Moulded insulator for gland assembly types C2 and
     D2
36. Typical arrangement of insulated gland assembly
     (utilizing moulded insulator) types C2 and D2
37. Insulation for gland assembly types C1, D1, E1
     and F1
38. Typical arrangement of insulated gland assembly
     (utilizing insulating plate and bushes) types C1
     and D1
39. Island layers for gland assembly types E1 and F1
40. Typical arrangement of insulated gland assembly with
     island layer (utilizing insulating plates and
     bushes) types E1 and F1
41. Armour clamps

Specifies envelope and fixing dimensions and dimensions of certain components. For voltages up to 36 kV and currents up to 2500 A. Requirements for boxes in which the cores of cables terminate and are connected to terminals. For paper or extruded insulated cables with copper or aluminium conductors and lead or aluminium sheaths.

This British Standard specifies requirements for cable boxes in which the cores of cables terminate within the box and are connected to terminals fixed therein.

The boxes are intended for the termination of impregnated-paper-insulated solid-type lead or aluminium sheathed cables having copper or aluminium conductors and for the termination of extruded insulated and sheathed unarmoured cables having copper or aluminium conductors.

The boxes are suitable for operating indoors or outdoors under conditions of ambient temperature, loading, altitude, etc., envisaged by BS 171.

The standard box is arranged for cables approaching vertically from below and is not bi-directional. Where cables approach vertically from above, alternative parts are required (see Figure 28).

Details of the range of boxes are given in Table 3 to Table 11.

The objectives of this standard are to specify standard envelope dimensions and fixing dimensions of cable boxes to achieve interchangeability whatever type of filling medium is to be used, and also to specify dimensions of components, e.g. bushings, glands, for interchangeability of such parts.

The boxes are suitable for rated voltages up to 36 kV and currents up to 2 500 A.

This standard does not purport to specify complete details of design and construction but some observations on these aspects are given in clause 7.

NOTE This standard does not apply to boxes where the cable cores pass through to the transformer without a joint or are joined to cable tails in the box by sleeves or thimbles.

Section 2 and 3 deal with design principles, general considerations and tests for a range of cable boxes up to and including 36 kV rated voltage.

Section 4 specifies the essential dimensions and component details for the range of cable boxes.

Appendix A lists the information to be given with enquiry and order. Appendix B specifies wiping glands for metallic sheathed cables.