3M Wraparound Heat Shrink Cable Repair Kits Used For LV HV Mining Cable Sheaths

Published 07 Feb 2019

Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves - 3M HDCW

Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves – 3M HDCW

  • uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager

Wraparound Heat Shrink Cable Repair Kits

3M HDCW series heat shrinkable wraparound sleeve kits are suitable for cable sheath repair and jacketing sleeves – this includes heat shrink cable repair, Cold Shrink cable repair, 3M Scotch electrical tape and insulating resin based repair solutions using Scotchcast products for low and high voltage cables.

The cable repair sleeves are suitable for use with cable joints and as an additional corrosion protection on undamaged cables.

Thorne & Derrick supply the mining industry with 3M Heat Shrink Cable Repair Kits to re-instate cable insulation to damaged low and high voltage cable sheaths caused by mechanical stress, third party accident or cable corrosion in underground damp mining cable installations.

Cable Repair

Image: International Banker

Repair Sleeves For Cables

3M Wraparound Heat Shrink Cable Repair sleeves are designed to quickly repair damaged cable jacketing. They are also suitable for use with cable joints and as additional corrosion protection on undamaged cables in hazardous, harsh and extreme operating environments in underground or surface mining applications.

3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve. Upon heating, the sleeve shrinks and the adhesive melts, thereby achieving a safe and watertight bond between the sleeve and the cable.

A corrosion proof metal clip is then used to fully close the heat shrink sleeve.

3M HDCW wraparound heat shrink cable repair sleeves are designed to quickly repair damaged cable jacketing – they can also be used to rejacket in-line cable splices.

HDCW wrap sleeves can be used as insulation material on cable and splices up to 1000 volts and as jacket repair material on cable up to 35kV. 3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve.

The design of the heat shrink wrap style sleeve allows it to be installed in tight spaces with ordinary heating equipment such as a heat shrink torch.

Thorne & Derrick International are the UK’s largest stockist of 3M Electrical Cable Accessories.

3M HDCW

Cable Repair Solutions: Mining cable repair kits are available for BS6708 underground mining cables including – Type 11, Type 7, Type 7S, Type 7M, Type 307, Type 307S, Type 307M Flexible trailing cables for use with coalcutters and similar face equipment, Type 211, Type 201, Type 62, Type 63, Type 64, Type 321, Type 331 Flexibile trailing cables with galvanised steel wire pliable wire armouring for use as mine extension cables in quarries and coalface lighting.

3M HDCW Wraparound Heat Shrink Cable Repair Sleeve Features & Benefits

  • Easy and quick to install
  • Cost-efficient cable repair
  • Reliable and tough thick wall heat shrink sheets
  • No open cable needed – wraparound design for versatile cable repairs
  • Good bonding to PE and PVC cable sheaths and jackets
  • Maximum protection against mechanical stress
  • Excellent resistance to even the harshest and hazardous area environments
  • Forms a perfect seal to prevent moisture ingress into damaged cables

How to Install Wraparound Repair Sleeves

  1. Position the heat shrink wraparound sleeve over the cable damage, joint or splice and close the metal channel
  2. Apply heat using the heat shrink gas torch to shrink the sleeve onto the cable sheath and melt the adhesive liner
  3. The finished sleeve is allowed to cool creating moisture proof and corrosion resistant cable seal
Cable Repair Sleeves - Installation

Cable Repair Sleeves – Installation

HEAT SHRINK WRAPAROUND REPAIR SLEEVES

3M Cable Repair Kit Part Number Length Inches (Metres) Primary Insulation 600/1000V Conductor Size AWG/MCM Jacket Repair Use Range max./min inches (mm) Sleeve Dimensions
Expanded Diameter inches (mm) Recovered Diameter inches (mm)
HDCW 35/10-250
HDCW 35/10-1200
9.8 (250)
47.2 (1200)
#8-2/0
#8-2/0
1.38-0.39 (35-10)
1.38-0.39 (35-10)
1.97 (50)
1.97 (50)
0.32 (8)
0.32 (8)
HDCW 55/10-500
HDCW 35/10-1200
19.7 (500)
47.2 (1200)
3/0-400
3/0-400
2.17-0.59 (55-15)
2.17-0.59 (55-15)
2.95 (75)
2.95 (75)
0.51 (13)
0.51 (13)
HDCW 80/25-750
HDCW 80/25-1200
29.5 (750)
47.2 (1200)
500-1000
500-1000
3.15-0.98 (80-25)
3.15-0.98 (80-25)
3.94 (100)
3.94 (100)
0.91 (25)
0.91 (25)
HDCW 110/30-1000
HDCW 110/30-1200
39.4 (1000)
47.2 (1200)
1000-2000
1000-2000
4.33-1.18 (110-30)
4.33-1.18 (110-30)
5.20 (132)
5.20 (132)
0.98 (25)
0.98 (25)
HDCW 140/40-1000
HDCW 140/40-1200
39.4 (1000)
47.2 (1200)
N/A
N/A
5.51-1.57 (140-40)
5.51-1.57 (140-40)
5.71 (145)
5.71 (145)
1.26 (32)
1.26 (32)

3M HDCW SERIES DIMENSIONS

3M HDCW

3M HDCW Cable Repair Kit Part Number H/mm F/mm T/mm
HDCW 35/10 155 18 0.9
HDCW 55/15 175 18 0.9
HDCW 80/25 260 30 0.9
HDCW 110/30 355 30 0.9
HDCW 140/40 455 30 0.9

 

Cold Shrink Cable Repair

Where “hot-working” is not permitted due to atmospheric presence of flammable gases in potentially explosive atmospheres and hazardous area locations Cold Shrink tubes can be used to repair cables where access is possible to the open-end of the cable circuit – not suitable for repairing cables mid-circuit or mid-span unless cable can be isolated, uncoupled and disconnected from mains power supply.

If a flexible repair to cable is required we can provide 3M Scotchcast resin based cable repair solutions specified for marine and offshore with excellent resistance to seawater environments, submersion and exposure.

➡ Read Blog: Repairing Damaged Cables, Cable Sheath & Jackets

3M HDCW - Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves

3M HDCW – Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves

➡ Should you require customer service or technical support on the selection or specification of LV MV HV Cable Accessories please contact us.

♦ For LV Low Voltage CablesCold Shrink Cable Terminations MV | Cold Shrink Cable Abandonment | Cold Shrink Tubes

3M Cold Shrink

3M Cold Shrink

LV Cable Joints (Low Voltage Cables)

Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.

Complete range of LV Cable Accessories  ➡

Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations

Joints Terminations Connectors

Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV

Cold Shrink

Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables

Further Reading