33kV Cable Terminations – 3 Core Indoor/Outdoor

33kV Cable Terminations – 3 Core Indoor

Cold Shrink Three Core Indoor / Outdoor Cable Terminations

3M 94-EB Terminations for 12/20(24) kV and 18/30(36) kV Cables

Thorne & Derrick are Specialist Distributors for the 3M Electrical range of Cold Shrink terminations for connection of medium/high voltage cables to 33kV substation electrical equipment including switchgear, transformers, air insulated cable box and junction/terminal boxes.

3M Cold Shrink Terminations to suit 33kV 3 core MV-HV cables with polymeric insulation (XLPE EPR).

• Versatile Design – Prefabricated one-piece cold shrink termination body allows installation on a wide range of cable sizes and types at -20ºC to +50ºC
• No heat or flame required during installation. Safe for hazardous areas (ATEX Directive Zone 1 & Zone 2)
• Solderless earth connection using 3M Constant Force springs for either copper wire or copper tape screen
• No special jointing tools or heat-shrink gas torches needed during installation

3M Cold Shrink

3M QTII v QTIII Termination Comparison

QTII Technical Specification

18/30(36) kV Cables Termination

3M QTII 33kV 3 core indoor terminations are specified for up to 30kV/36kV voltages and three core polymeric power cable systems according to HD 620 (IEC 60502).

Kits include a 3M QTII silicone cable termination body with integrated stress control device and silicone elastomeric insulation.

Additionally, 3M silicone tape is included for moisture sealing along with armour continuity components for terminating 3 core armoured SWA medium voltage cables, re-jacketing tubes and three core cold shrink breakout boots. Skirts are integrated for faster and easier installation.

3M QTII 33kV three core indoor terminations are quick, easy and safe to install and do not require special tools – by pulling and unwinding the plastic support core in a counter clockwise direction the 3M termination body can be installed.

3M 33kV cable terminations are easily identifiable and are marked with the supplier name, cable cross section ranges, voltage class and cable type. These cold shrink terminations have a shelf life of up to 3 years from the manufacturing date when stored between -40ºC and +50ºC.

Each 3M Cold Shrink cable termination is suitable for a range of conductor cross-sectional areas depending on the cable maximum voltage – 3M 94-EB terminations are suitable for 33kV cables and power systems.

*Please note this range is not suitable for 19/33(36)kV

3M Cold Shrink QTII v QTIII Terminations

3M QTII Cold Shrink terminations are Standard type part-integrated with additional installation steps required compared to the 3M QTIII fully-integrated Premium termination system – watch the following installation video produced by 3M to understand the procedures for using QTII terminations for MV HV cables including 33kV.

3M’s QTII range (Quick Term II) of cold shrink terminations are partially integrated offering a viable cost-based alternative to heat shrink terminations.

The 3M QTII termination comes with an integrated stress control tube and an outer insulator with good track resistance but requires moisture blocking mastic, silicone grease-stress relief and stress control mastic to be applied separately by the jointer.

• 3M 5313 Scotch Seal Tape – used to secure and locate earthing braid to earth 33kV copper tape screen cable
• 3M Scotch 13 Tape – overtape, seal and insulate constant force spring earth connection
• 3M Scotch 35 Tape – avoid cable termination body snagging
• 3M Scotch 70 Silicon Tape – used to moisture seal 33kV cable lugs and cable termination

3M Cold Shrink Cable TerminationS 33kV

1. Prepare the MV-HV cable as normal using cable cleaning wipes	2. Place the 3M Cold Shrink termination body over the 33kV cable end and position at the correct point on the MV-HV cable	3. Begin to remove the inner core, allowing the termination to cold shrink down onto the 33kV cable	4. Once the inner core has been fully removed, the 33kV cable termination installation is complete

Product Identification

3M QTII Series Cold Shrink Termination kits are marked with supplier name, cable cross section ranges (sqmm), voltage class and cable type, storage conditions and 3M manufacturing codes for product traceability.

Termination Performance Tests

3M QTII 94-EB Series Cable Terminations, manufactured using Cold Shrink technology, meet and exceed the requirements of the European standard CENELEC HD 629.1 as well as IEC 60502-4.

Cold Shrink Storage

The shelf life of 3M 94-EB Series of cold shrink terminations is specified as 3 years. Temperature: – 40°C to +50°C.

3M Cold Shrink Cable Termination ACCESSORIES

Together with a wide range of cable terminations 3M can also offer a full range of fully tested termination accessories:

Barrier Boots	Cable Glands	Cable Lugs Shearbolt	Cable Lugs Crimp
3M Barrier Bushing Boots are suitable for both resin cast and porcelain bushings over a wide range of cable sizes	3M Cable Gland Kits use Cold Shrink as the sealing method for 33kV SWA cables – further reducing installation cost and H&S related administration	Mechanical type shearbolt cable lugs for copper/aluminium conductor cables at 33kV – see Pfisterer Sicon range	Crimp lugs manufactured by Cembre for 11kV/33kV

➡ See below for full range of 33kV Cable Terminations – Three Core Cable Terminations 

➡ Go to Cold Shrink Terminations to view MV-HV cable terminations for 6.6kV, 11kV, 33kV and 66/132kV cables. Also – cable accessories including high-fault current rated cable glands, cable cleats and cable jointing tools for jointing and terminating of MV/HV power cables.

Cable Box Terminations & Connectors – Inner Cone & Outer Cone

Cold shrink is typically used for the dry termination of medium/high voltage 11kV-33kV cables into MV-HV air insulated cable boxes.

T&D also distribute MV-HV Connectors for terminating cable into metal-enclosed SF6 insulated medium voltage switchgears (GIS) and liquid immersed transformers.

• Nexans Euromold Separable Connectors – elbow-shaped, straight or T-shaped connectors for outer cone bushings
• Pfisterer CONNEX Plugs – medium voltage cable plugs for inner cone bushing sizes 1, 2 or 3

Data Sheets

• 33kV Cable Terminations – 3 Core Indoor/Outdoor
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