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3M Cold Shrink Cable Jointing Kits - Benefits:
* Simple installation – no special jointing tools required
* No torches or heat required with Cold Shrink joint kits, no "hot-working"
* Safe installation - replaces conventional resin jointing method
* Accommodates a wide range of cable sizes
* Improved tough rubber formulation withstands rough backfilling
* Resistant to acids, alkalis, ozone, UV light, and fungus
* Waterproof seal for submerged and outdoor exposed applications
* Smooth profile cable joint with space and weight savings
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.
3M Cold Shrink Potted History.....
3M (St. Paul, Minnesota, U.S.) developed and patented cold-shrink insulation technology in 1968 for use within low voltage and high voltage cable joints and cable terminations. The first cold-shrink insulators were known as pre-stretched tubes (PSTs) or PST Zip-Core tubes, an insulation alternative for low-voltage underground electrical cable splices, cable joints and cable terminations.
Consisting of an expanded rubber tube with a removable plastic core, 3M cold-shrink insulators satisfied a demand for a faster and simpler cable joint or cable splice-protection method. This insulation can be applied with minimal physical effort, requiring no sealants, heat source or other tools.
The earliest 3M cold-shrink insulation was made of ethylene-propylene-diene-monomer (EPDM) rubber because of its favorable mechanical properties and elastic memory. The formulation has been modified and improved over the years to meet the requirements of specific applications. Cold-shrink tubing forms a permanent grip or living seal that can be flexed without cracking or breaking.
A few years later, a medium-voltage cold-shrink termination was developed that had an EPDM slide-on stress cone and a silicone-rubber insulator. This product was used for terminating shielded medium-voltage power cables either on poles or in switchgear. In 1996, a cold shrink cable termination was developed that eliminated the need for silicone grease, reduced the length of the cable termination, improved arc and track resistance and eliminated the need for tape sealing. Today, 3M Cold Shrink is the market leader in the design and manufacture of cold-applied cable accessories including cable joints, splices and terminations.
Category: HV Cable Jointing & Terminating