SWA Catalogue 2019

Cable terminations

Copper tube terminals

Cable Preparation

Correct Compression Techniques

Conductor insulation to be butted against terminal - no exposed conductor

Insulation square and clean cut Conductor clean cut No damage to conductor when removing the insulation

Imprint of die size

View cable has been fully inserted

Position 1st crimp close to the flare

Insulation unevenly cut and damaged Conductor cut at an angle Conductor strands damaged

Terminal identification

If 2nd crimp is being applied, allow a 2mm collar

Witness of wire

Position 2nd crimp if sufficient space depending on the terminal/die used

Palm length to ensure firm and/positive electrical termination

Sight hole

SWA terminals provide a suitable barrel length to ensure crimp performance

This joint is very unsafe. It is unlikely that the conductor is more than superficially compressed Common Compression Faults

Conductor not fully inserted

Flashing excess metal is extruded because of over-compression with mismatched or incorrect dies

Strands damaged/ cut while stripping

Compression area too near palm

Compression area too far from palm

All tooling used in the application of cable connectors should be kept in a good state of repair, regularly maintained and used in strict accordance with SWA’s operating instructions

British Standard BS 7609: 1992 “Code of practice Installation and Inspection of uninsulated compression and mechanical connectors for power cable with copper or aluminium conductors”. Recommended Torque wrench settings for aluminium and copper terminations:

Stud size (full nut) mm

Grade 8.8 stainless steel or equivalent studs Nm

Brass or high conductivity copper studs Nm

6 8

7

5

20 35 50 70 90

10 20 40 65 90

10 12 14

16*

20

150

-

*16mm aluminium or copper stemmed bushings; full nuts, 70Nm; half nuts 55Nm

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