Cable Joints & Terminations LV

3M Electrical Tapes – Scotch Brand Electrical Tapes From 3M

3M Scotch Electrical Tapes

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

Electrical Tapes Manufactured by 3M

The following informative video courtesy of 3M Electrical discusses the requirements and of – this video of short clips will show you how to use, the features and benefits of a variety of 3M Electrical Products.

Cable Repair Tape & Heat Shrink Sleeve From 3M Electrical For VFD Cables

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

Heat Shrink Sleeve For VFD Cables

Thorne & Derrick International, based in the UK, are Specialist Distributors of cable repair products used to re-instate damaged cable sheaths and jackets where the extent of damage to the cable does not necessitate the need to carry out a cable joint to the section of compromised cable.

What Are VFD Cables?

Basically, VFD cables distribute electrical power from AC drive systems to AC motors.

Variable-frequency AC motor drive output cables are subject to harsh operating settings characterised by high voltage spikes, high noise levels and adverse environmental conditions during normal service conditions.

Consequently, VFD cables must conduct not only the overall high power levels of the pulse-width modulated (PWM) signals but also the extremely high voltage which can occur when standing waves develop on the conductors. This high voltage can cause corona discharges to occur between the conductors of conventional cables, causing damage not only to the cabling itself, but also to the motors, bearings, drives and related equipment.

This damage can cause failure of the entire drive system, resulting in costly production downtime. Here, we present a simple but effective method of repairing cable sheath damage to VFD cables using cable repair tapes manufactured by 3M Electrical.

Why High Performance VFD Cable Is Important

Image : Belden

TEOF F-RFOU Offshore Cables

Armoured VFD Cables

Pictured below is a Prysmian (P) TEOF F-RFOU P1/P8 VFD 1.8/3kV 3X150+3G35mm2 IEC 60332-3-22 2013 cable – the cable outer sheath has been clearly damaged.

CABLE REPAIR TAPEs

A recommended cable repair solution is to remove the outer VFD cable jacket 200mm each side of the damage so a confident and accurate assessment of the extent of cable damage can be ascertained.

Assuming cable damage is limited to the sheath and not caused impact into the cable wire armour or braid then a simple cable repair can be made using 3M Scotch 24 copper mesh shielding tape, 3M Scotch 2228 rubber mastic sealing tape and then cable sheath re-instatement using 3M HDCW heat shrink wrap-around cable repair sleeve.

Scotch 24 Tape

• Manufacturer: 3M Electrical
• Brand: Scotch Tapes
• Stock Code: 3M Scotch 24 Tape
• Product Category: Electrical Tapes
• 3M Scotch 24 Tape Application: All metal open weave shielding braid, conformable, temperature stable. Continue electrostatic shielding across splice.
• 3M Scotch 24 Roll Sizes:
• 1″ x 15′ (25 mm x 4,5 m)
  1″ x 100′ (25 mm x 30,5 m)
  2″ x 10′ (51 mm x 3,05 m)

Scotch 2228 Tape

• Manufacturer: 3M Electrical
• Brand: Scotch Tapes
• Stock Code: 3M Scotch 2228 Tape
• Product Category: Electrical Tapes
• Sub Product Category: Insulation Tapes
• 3M Scotch 2228 Tape Application: Highly conformable, super stretchy in all weather applications; resists UV rays, abrasion, corrosion, alkalies and acids. Primary insulation for splices up to 600V. Protective jacketing.
• Max Temperature: 90°C / 194°F emergency overload of 130°C / 266°F
• 3M Scotch 2228 Roll Sizes:
• 2″ x 3′ (50 mm x 0,9 m)
  1″ x 10′ (25 mm x 3,0 m)
  2″ x 10′ (51 mm x 3,05 m)

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

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

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

Central Earth Terminal (CET) for Steel Wire Armour (SWA) Cable Termination of Street Lighting Cables

• uploaded by Chris Dodds - Sales & Marketing Manager
  
  

Central Earth Terminal (CET)

Earthing System For SWA Wire Armoured Cables | Cable Glands & CETs

Thorne & Derrick International, based in the UK, continue to supply CET Central Earth Terminal cable gland plates to street lighting contractors for the termination and installation of BS5467 Low Voltage XLPE Insulated SWA Armoured 600V/1000V power cables.

The CET Earthing System is specified for the termination and bonding of all sizes of SWA armoured cables into confined spaces of street furniture – typical applications include street lighting columns, feeder pillars or traffic signs.

CET002  &  CET003

The CET Central Earth Terminal is available in 2 designs – the CET002 and CET003 series of earth terminals offer an inherently strong and simple design which exceeds the BSI (Cable Gland) torque test, manufactured exclusively in zinc plated solid brass.

CEL offers a comprehensive range of earthing components that cater for all standard size armoured cables – the terminals are easy to use and install by the street lighting engineer.

All wire armour cable terminations are “made-off” from the front without the need of a spanner providing an effective earth bond.

CET002 Terminal

The Charles Endirect range of earthing terminals includes compression glands, CET’s, saddles, terminal blocks and gland plates for the earthing and bonding of all steel wire armoured (SWA) street lighting cables.

Pictured: Earth Terminal CET002 – shown terminating wire armoured cables with the armours in the splayed position.

Cable Glands BW CW

The CET system is complemented by a full range of BW brass cable glands and CW brass glands to BS6121 and stand off gland plates as well as the solid brass earth blocks – EB42 – frequently used on street furniture backboards.

• BW20, BW25 and BW32 Cable Glands
  

  CET002 Terminal

• CW20, CW25 and CW32 Cable Glands

Fuses

CEL together with T&D stock and supply street lighting fuses to IEC 60269 (BS88), including LD (230V) and MD (400V) and LST (230V) versions of all current ratings.

These fuse sizes are designed to match up with CEL street lighting isolators and street lighting cut outs and can be supplied fitted to special order along with the pre-wiring of cable tails.

Pictured: Earth Terminal CET002 – shown terminating wire armoured cables with the armours in bent back position.

Charles Endirect Earthing Components​

CET003 Terminal

CET (Central Earth Terminal) is the established street lighting industry standard for “stand-off” cable glanding and termination of XLPE insulated cables with steel wire armour (SWA) cables up to 70sqmm cross section area (circular stranded copper).

CET is an inherently strong and simple earthing design for single or multiple earth take-off points to suit all XLPE/SWA cables – designs allow splayed or bent steel wire armours using zinc plated solid brass terminal components.

SWA earthing glands are used by street lighting and traffic signal companies – the cable glands meet and exceed the BSI torque test for excellent electrical installation practices and earthing integrity.

Pictured: Earth Terminal CET003 – shown terminating wire armoured cables with the armours in the splayed position.

Central Earthing Terminals ​CET Advantages

• Inherently strong and simple design
• Exceeds BSI (Cable Gland) torque test
• Main terminal components are all zinc plated solid brass
• No loose fitting or easily omitted strands
• Single or multiple earth take-off points
• Comprehensive range, all standard cable sizes
• Supplied complete with jubilee clip
  

  CET003 Terminal

Pictured: Earth Terminal CET003 – shown terminating wire armoured cables with the armours in bent back position.

A comprehensive range of Earth Terminals for bent back or splayed configuration termination of the wire armour of street lighting cables – single, double or triple earth saddles are available to install CET002 and CET003 to the equipment backboard.

Stand-off cable gland plates are also available manufactured from 2mm thick brass with fixing gland hole options to suit the installation – complete range of Street Lighting Equipment available including isolators, cut-outs, feeder pillars and solar belisha beacons.

CEL Central Earthing Terminal Max Cable Size Accepted

➡ The following table enables the selection of the correct CET earth terminal to terminate and gland multicore (2, 3 or 4) core armoured power cables:

BW Cable Gland Selection Chart

Standard brass compression glands to BS6121.

Suitable for SWA cable, complete with brass lock nut and PVC shroud. Will accept cable with maximum overall diameter as follows:

• BW20 Cable Gland – 20.8mm
• BW25 Cable Gland – 27.2mm
• BW32 Cable Gland – 33.5mm

➡ The following table enables the selection of the correct BW Cable Gland to terminate and gland multicore (2, 3 or 4) core armoured power cables – the brass cable gland provides mechanical cable retention and termination of the steel wire armour up to 600V/1000 volts.

For the termination and cable crimping of the stranded copper cable conductors refer to the Cembre range of cable lugs.

LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV 

ANSI C119.1-2016 – Standard Download

American National Standard for Electric Connectors – Sealed Insulated Underground Connector Systems Rated 600 Volts

 ➡ DOWNLOAD

THORNE & DERRICK are national distributors LV, MV & HV Cable Installation, Cable Pulling, Cable Jointing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.

Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.

Invitation

Thorne & Derrick invite you to join LinkedIn’s largest LV-HV Electrical Discussion Group : Low & High Voltage Power, Cabling, Jointing & Electricals. 

Discussion subjects include cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV. Network, engage and promote your profile, company or products with over 10,000 influencers.

In What Situations Would I Require a Hazardous Area Cable Joint?

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

Hazardous Area Cable Joint

Thorne & Derrick International hold the largest UK stocks of Scotchcast resin cable joints including hazardous area ranges for cable jointing power, control and instrumentation cables manufactured by 3M Electrical.

An expert from 3M Electrical details the situations where 3M Hazardous Area Scotchcast Resin Cable Joints would be specified.

• Cable joint shell/resin is flame retardant, hydrocarbon resistant and halogen free
• Advanced Scotchcast resin delivery for safer and cleaner installation by the Jointer
• Complete with 3M Scotchcast premium hydrocarbon resistant 2 part resin 1402FR
• Rated up to and including 1.9/3.3kV for hazardous area cable jointing
• Designed for specialist cable applications where hydrocarbons are present in offshore locations

HAZARDOUS AREA ZONES

• Zone 1 – according to ATEX a place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally.
• Zone 2 – according to ATEX a place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation but, if it does occur, persists for a short period only.

3M Scotchcast Hazardous Area joint kits include the new flame-retardant, hydrocarbon-resistant, halogen-free 1402FR resin packs.

3M Scotchcast Hazardous Area cable joint kits are designed for use with both single-core and multi-core armoured power cables up to 3.3kV – this new 3M product features a unique hinged mould body and totally enclosed mixing system which is suitable for use in areas of high soil contamination and ATEX rated hazardous areas.

Read our Blog about jointing offshore cables located in hazardous areas using 3M Electrical cable joints.

The 3M Scotchcast LVI-3/x range replaces the traditional Scotchcast LR range of cable joints and is designed for use with both Cembre type copper through connectors (compression splices) or mechanical shearbolt connectors, the two smallest 3M joints LVI-3/2C and LVI-3/3C being supplied with mechanical connectors to suit multi-core cables.

• High-performance 2-part polyurethane 1402FR hazardous area cable jointing resin
• Suitable for use with wire armour (AWA and SWA) cables and wire braid (GSWB) cables

3M Electrical Cable Joints – for conductor jointing either Cembre (Crimp) or Pfisterer Sicon (Mechanical) style connectors can be used depending on application and Jointer preferences.

Although cable joints are not formally certified according to ATEX there are several minimum specification and performance requirements for cable joints when being used to connect, repair or joint cables in hazardous areas.

For example 3M LVI-3 type cable joints include specially formulated 3M Scotchcast 1402FR resin – this cable jointing resin is hydro carbon resistant, flame retardant, halogen free and chemical resistant for use in hazardous area locations.

Installing Hazardous Area Cable Joints Using 3M Scotchcast Resin Jointing Kits

 Watch 3M Video

Cable Accessories & Electrical Equipment – ATEX Certified For Hazardous Areas

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 on both safe “non-hazardous” area and designated hazardous areas with potentially explosive atmospheres. Complete range of MV & HV Joints and Terminations are available for safe installation in explosive atmosphere locations using Cold Shrink are available from stock.

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

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

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