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.
➡ 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
- 3M Electrical Products Stocked By Thorne & Derrick International
