How To Apply 3M Cold Shrink Tubing – Underground Cable Joints
Published 11 Jun 2018
A series of How-To videos for repairing, jointing and terminating cables using 3M Cold Shrink & Scotchcast products.
Cold Shrink
This video by 3M Electrical shows how to apply 3M Cold Shrink tubing safely for underground cable jointing processes and applications.
3M Cold Shrink tubing is a series of open-ended, tubular rubber sleeves, which are factory expanded and assembled onto a removable core – Cold Shrink tubes are supplied for field installation in a pre-stretched condition.
The 3M Electrical video shows how to install the cold shrink tubing and the full underground cable jointing process which is explained below:
- Position 3M Cold Shrink outer tube splice body and copper sleeve over the cable
- Install connector – a number of the 3M kits come complete with connectors
- Many connectors can be used providing they suit the requirements of the cable and fit within the Faraday cage
- Using 3M Cable Cleaning Wipes clean the cable and connector
- Once cleaned apply 3M P55 silicone grease leaving the connector until last to avoid contamination and smoothing out the grease to give an even coverage
- Move the splice body into place over the connector before unwinding the removable core to install the tube allowing the tube to shrink and form a waterproof seal
- Apply a layer of 3M Scotch Seal 5313 Tape to the end of the joint – a comfortable and durable mastic with excellent moisture and environmental seal
- Now tape over with the 3M Scotch 2228 Mastic Tape – a conformable self amalgamating temperature stable mastic
- Then reposition the copper sleeve over the joint fixing in place with 3M Constant Force Springs
- Now tape over with 3M Scotch 13 Semi Conducting Tape before applying more 3M Scotch 2228 Mastic Tape over the top
- Move the first 3M Cold Shrink Tube into place ensuring one end of the joint is completely covered
- Apply 3M Scotch 2228 Mastic Tape in preparation for the last protection tube
- Finally install the second 3M Cold Shrink Outer Protection Tube making sure to overlap the previous protection tube
Cold Shrink – invented by 3M over 40 years ago and now the preferred technology for heat-free jointing, terminating, sealing and abandonment of LV HV cables
We hope you find this video informative and educational, contact T&D for technical support, quotations and stock availability for 3M Cold Shrink Tubing.
âž¡ Visit 3M Electrical for further information about joints, terminations, tapes and insulation to seal, repair, splice and connect LV MV HV cables.
Cold Shrink | Joint | Terminate | Seal | Repair | Splice | LV MV HV Cables | 3M
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