Cold Shrink Cable Joints
Cold Shrink Joints for Single & 3 Core Low Voltage Polymeric Cables Up To 3.3kV
3M Cold Shrink Cable Joints form part of the LC Series of low voltage cable joints that are suitable for jointing polymeric (XLPE EPR) 600/1000V cable and unscreened 3 Core XLPE 1.9kV/3.3kV power cables with SWA (steel wire armour) to BS5467.
Cold Shrink joints are compatible with copper or aluminium phase conductors including cross sectional area of 1.5-300sqmm (multi-core) and 50-1000sqmm (single-core) – with or without lead sheath/jacket.
Also suitable to joint marine and offshore EPR insulated cable according to BS6883 with galvanised wire braid to provide power to emergency lighting units, shut down control systems, gas detectors, alarm systems, fire pump systems, social areas, control rooms, computer suites and accommodation modules.
Specified due to the flexibility and workability of the compact, smooth profile cable joint for use in limited working and confined space locations in manholes.
Low voltage cable joints utilise 3M tool free cold shrink technology without requirement for heat, Jointers gas torches or additional adhesives. Specialist application resin cable joints are also available for zero halogen, fire resistant, hydrocarbon resistant and hazardous area locations according to the ATEX Directive (Zone 1 & Zone 2 Potentially Explosive Atmospheres).
Flameless is Blameless | Safe & Shorter Installation Times
Heat shrink cable accessories, including joints and terminations, require a naked flame to heat and shrink the tubings and melt the glue and mastics present on the coating of the inner wall of the heat shrink – Cold Shrink joints and cable accessories are the safe solution where hot work is forbidden or permits are difficult to obtain. An EPDM rubber body manufactured by 3M Electrical with integrated components is moulded and the pre-expanded onto a spiral or tube, ready to hand installed without use of specialist tools, heat or flames.
3M LC series of cable joints are designed for use with selected multipair instrumentation cables and flexible or trailing cables.
3M cold shrink range is an effective alternative to traditional resin based or heat shrink methods and can be used in indoor, outdoor, overhead, or use in cable trays. Additional mechanical protection may be required for direct burial of the cable joint.
The cold shrink outer protection tube provides a reliable environmental seal and is resistant to acid, alkalis, ozone and UV light.
3M Cold Shrink Cable Joints – Features
- Simple installation – no special tools required
- No Jointer gas torches or heat required
- Safe installation – alternative to conventional resin jointing method
- Cold shrink accommodates a wide range of cable sizes
- Waterproof seal
- Rated up to and including 1.9/3.3kV
- Also Cold Shrink Cable Terminations LV Up To 3.3kV
3M Cold Shrink Cable Joints – Kit Contents
3M LC cold shrink inline cable joints contain the following:
- Cold shrink pre stretched outer tube
- Self amalgamating insulation tape – 3M Scotch 23
- Armour/earth connection components for wire armoured/wire braided cables
- Full Jointers installation instructions
Technical Specification – Multicore Cables
Following table enables selection of Cold Shrink joints for power cables:
|3M Cold Shrink Cable Joint Part Number||Cross Sectional Area (mm²)||Cable Diameter Range (mm)||Cable Armour Range (mm)|
|Single Core 1kV||Two Core 1kV||Three Core 1kV||Four Core 1kV||Three Core 3.3kV|
|3M LC1||N/A||1.5 – 4||1.5 – 4||1.5 – 2.5||N/A||16.1 – 33.1||9 – 15|
|3M LC2||50 – 95||6 – 10||6 – 10||4 – 6||N/A||16.1 – 33.1||14 – 22|
|3M LC3||120 – 150||16 – 50||16 – 25||10 – 16||N/A||16.1 – 33.1||18.5 – 29|
|3M LC4||185 – 400||70 – 120||35 – 70||25 – 50||16 – 50||24.9 – 56.4||23.5 – 37|
|3M LC5||500 – 630||150 -185||95 – 150||70 – 120||70 – 150||37.8 – 84.3||31 – 50|
|3M LC6||800 – 1000||240 – 300||185 – 240||150 -185||185 – 240||37.8 – 84.3||44 – 70|
|3M LC7||N/A||N/A||300||240 – 300||300||62.5 – 128.5||44 – 70|
Note: For cables with more than 4 cores, please use the cable diameter and armour diameter to select, taking into account the space needed to install the chosen connectors.
TECHNICAL SPECIFICATION – Multipair cables
Following table enables selection of Cold Shrink joints for instrumentation cables:
|3M Cold Shrink Cable Joint Part Number||Cable Size||Cable Diameter Range (mm)||Cable Armour Range (mm)|
|LC1||2 Pair 1.5mm²||16.1 – 33.1||9 – 15|
|LC2||4 Pair 1.5mm²||16.1 – 33.1||14 – 22|
|LC3||7 Pair 2.5mm²||16.1 – 33.1||18.5 – 29|
|LC5||24 Pair 1.5mm²||37.8 – 84.3||31 – 50|
Note: For other Multipair combinations, please contact us for help with selection.
3M LC cold shrink tubes and insulation tapes have a 5 year shelf life from the date of manufacture when stored between 10-27ºC at <75% relative humidity.
3M Cold Shrink cable jointing kits offer faster, safer and simpler installations without the dangers and hassles of “hot-working” – no naked flames, no gas torches, no ignition tooling, no “hot-work” permit applications.
➡ Should you require customer service or technical support on the selection or specification of LV MV HV Cable Accessories please contact us – view the full range of 3M Cold Shrink Cable Joints below.