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Tape Tile & Stokbord Cable Protection Covers For MV HV Power Cables

Protect MV HV Cables – 11kV 33kV Cable Covers, Tiles & Tapes Using Tapetile & Stokbord

• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Why Use Cable Protection Covers?

Tape Tile & Stokbord

Centriforce Stokbord underground cable protection covers are manufactured from high impact, recycled polyethylene designed to withstand damage and protect medium/high voltage cables from plant and hand tools – the cable covers protect high voltage cables from damage caused by diggers and excavators inadvertently causing cable strikes when working around underground cables and utility services.

Both Tape Tile and Stokbord cable covers are used to protect LV-HV cables and cable ducts installed by the ‘open cut’ trench method – the cable protection products are intended, during any future excavation work, to give a clear visual warning of the presence of underground cable, cable joints or cable ducts. The cable identification is compliant with ENATS Standard 12-23 and meets the impact requirements of BS2484.

Pictured: High Voltage 11kV Cable Strike – an excavator has impacted onto a 11kV high voltage power cable penetrating the cable sheath and XLPE insulation to cause a power outage. Lack of planning on development projects increases the possibility of serious injuries to operatives and greatly increase cost to projects. On site cable records and use of cable fault locators should ensure worker safety and prevent accidental damage and strikes to high voltage cables.

Damage to underground cables can have serious repercussions such as damage to anyone working on or near the cables or a power blackout such as that experienced in Londonderry, December 2013.

LV Low Voltage | MV Medium Voltage | HV High Voltage Cable Protection

Why Use Stokbord? 

Centriforce Stokbord cable covers are suitable for underground high voltage cable protection (22kV, 33kV, 66kV, 132kV and up to 400kV). The 4 thickness variations of Stokbord covers are 6, 9, 12 and 18mm. This coupled with the fact that Stokbord is easy to fabricate ensures Centriforce Stokbords are the ideal product for protecting underground cables.

Stokbord Cable Cover Application

Centriforce Stokbord Cable Covers are fully jointed, laid overlapped and connected with plastic jointing pegs to provide safe high voltage underground cable protection.

Centriforce Stokbord cable covers feature a red background with yellow top tape containing visible warning “Caution Electric Cable Below” – Stokbord cable covers meet BS2482 impact requirements for underground cable cover protection.

Not only does this protect from any impact to the cables that would be made by excavation, it also shows exactly where cables are laid. The locating of cables is therefore simplified.

The features and benefits of Centriforce Stokbord makes the performance of the products far superior to steel and concrete cable covers / tiles /plates.

Stokbord Cable Covers – Benefits At A Glance

• Stokbord covers provide the clear warning to 3rd parties of underground buried cables
• Cable covers can be custom made with sizes to suit medium/high voltage cable trenches
• Contains bold warning text and company logo for clear MV-HV cable identification
• Damages to cables reduced – cost of repairs, HV jointing and supply disruption reduced
• Lightweight and easy to install Stokbord cable covers irrespective of weather conditions
• Durable with good impact resistance for MV HV EHV cable protection
• Rotproof and resistant to soil conditions for burial in underground cable trench

Plastic Cable Covers v Concrete Cable Covers

Cable Protection

Installation Of Cable Trench Covers & Cable Protection Tiles

All cables and ducts laid into cable trench should be over-protected by a cable protection cover or tape depending upon the highest voltage cable to be protected within the cable duct – typically in the UK the following cable protection tapes and covers are used for LV, MV and HV cables.

Marker tile tapes or Stokbord covers are installed over the cable in the appropriate trench drawings – usually there is no requirement to install either above approved cable ducts installed using trenchless techniques (i.e. directional drill) but either may be installed if it is deemed that additional MV-HV cable protection is required.

When Tape Tile is used it should be cut cleanly and installed so that the medium/high voltage cable is fully covered along the whole length of the installed cable duct.

• LV Service Cable 40m x 200mm x 2.5mm Tape Tile
• LV Mains Cable 40m x 200mm x 2.5mm Tape Tile
• 11kV MV Cables 40m x 200mm x 2.5mm Tape Tile
• 22kV MV Cables 40m x 200mm x 2.5mm Tape Tile
• 33kV MV Cables 1000mm x 244mm x 9mm Stokbord
• 66kV MV Cables 1000mm x 244mm x 9mm Stokbord
• 132kV MV Cables 1000mm x 244mm x 9mm Stokbord

More info  ➡ Tile Tape | Stokbord

Underground Cable Protection

• Further reading :

• Cable Laying & Pulling – Installing LV-HV Cable In Duct (Part 1 of 2)
• Cable Laying & Pulling – Installing LV-HV Cable In Trench (Part 2 of 2)

Cable Pulling & Cable Laying Equipment

Suppliers & Distributors

Thorne & Derrick International distribute the most extensive range of Cable Pulling & Cable Laying Equipment to enable the installation of low, medium and high voltage power cables into underground trench or duct – products also supplied for fibre optic blowing, subsea trenching, offshore umbilical installations and pulling armoured cables onto cable tray.

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.

Cable Blowers | Cable Lubricant | Duct Rods | Cable Socks | Cable Jacks | Cable Rollers | Cable Protection Covers MV HV | Cable Joints MV HV | Duct Sealing

Removing Outer Sheath HV EHV Cables – Alroc DMSR/80-160

Jointers Cable Tools | Low Medium High Voltage | LV MV HV 11kV 33kV 66kV 132kV

• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Cable Sheath Stripping Tool

Remove Outer Sheath & Jacket From High Voltage Cables

Alroc DMSR/80-160 cable jointing tools are used by jointers to remove the outer sheath and aluminium/lead shield from HV & EHV cables with outside diameters 80-160mm

Integral insulation screen detection is provided by successively performing a longitudinal and circular cut.

Alroc DMSR/80-160 cable jointing tool has an embedded mechanical dial gauge allowing the jointer to score the aluminium shield without cutting and causing cable damage.

The Alroc cable tool provides safe and precise cable cutting by the HV-EHV Jointer – a longitudinal cut ensures the cable screen is correctly scored without damaging the cable layer and setting up the thrust to prevent screen damage caused by the cable cutting blade.

The video demonstrates removing outer sheath from the EHV Extra High Voltage cable and the ability to switch from longitudinal cut to circular cut without removing the jointers tool from the cable.

A sound alerts when the tool blade is touching the aluminium/lead shield – the Alroc DMSR/80-160 cable jointers tool allows for very fine tuning and precision of the cutting depth, with a screen thickness capacity of 11mm / 0.433in and a diameter range of 80-160mm  / 3.150-6.299in.

T&D stock Alroc cable jointing tools to enable the removal of outer cable sheath, XLPE insulation and semi-conductive screens (bonded and strippable).

Associated Cable Jointing Tools

♦ Alroc PG HTA Sheath Stripping Pliers – see remove cable sheath

♦ Alroc LH Insulation Stripping Tools – see remove cable insulation

♦  Alroc 8YR0-LHM Peelable Semicon Screen Removal Tools – see remove semicon screen

More

• Removing Bonded Semicon Screen 11kV 33kV Cables – Alroc CWB18-60
• Cable Peeling Tool HV High Voltage Cables – ALROC AMF5 55-160 NSCF
• MV HV Power Cables & How To Remove Fabric Layers – Some Cable Jointers Tips

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Safety Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation earthing, 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 

T&D Distributors | 3M | Prysmian | Nexans Euromold | Elastimold | Pfisterer CONNEX

Removing LC Shield MV Medium Voltage Cables – Alroc PF3/06

Jointers Cable Tools | Low Medium High Voltage | LV MV HV 11kV 33kV 66kV 132kV

• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Cable Stripping Tool

Remove LC Longitudinally Corrugated Copper Tape Shield From High Voltage Cables

Alroc PF3/06 cable jointing tools are used by cable jointers to remove the copper tape shield from MV-HV medium/high voltage power cables.

The video demonstrates removing LC shield without scoring into the semi-conductive screen layer below the copper tape shield – the Alroc PF3/06 cable jointers tool features grooved bushings so that the cable cutting blade sits on the highest point of the LC shield.

The scoring depth is set to .3 mm to guarantee reliable cutting without accidental screen cutting or deep scoring.

Safe for the cable. Safe for the hands.

T&D stock Alroc cable jointing tools to enable the removal of outer cable sheath, XLPE insulation and semi-conductive screens (bonded and strippable).

Associated Cable Jointing Tools

♦ Alroc PG HTA Sheath Stripping Pliers – see remove cable sheath

♦ Alroc LH Insulation Stripping Tools – see remove cable insulation

♦  Alroc 8YR0-LHM Peelable Semicon Screen Removal Tools – see remove semicon screen

More

• Removing Bonded Semicon Screen 11kV 33kV Cables – Alroc CWB18-60
• Cable Peeling Tool HV High Voltage Cables – ALROC AMF5 55-160 NSCF
• MV HV Power Cables & How To Remove Fabric Layers – Some Cable Jointers Tips
• Removing Outer Sheath HV EHV Cables – Alroc DMSR/80-160

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Safety Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation earthing, 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 

T&D Distributors | 3M | Prysmian | Nexans Euromold | Elastimold | Pfisterer CONNEX

Removing Bonded Semicon Screen 11kV 33kV Cables – Alroc CWB18-60

Jointers Cable Tools | Low Medium High Voltage | LV MV HV 11kV 33kV 66kV 132kV

• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Alroc CWB18-60

Remove Bonded Semicon Screen From 11kV 33kV Power Cables

The new Alroc CWB/18-60-FEP cable jointers tool removes both the bonded semi-conducting screen without requiring lubrication while also creating a chamfer in a clean and reliable medium/high voltage cable preparation process – extensively used by jointers to prepare 11kV/33kV cables prior to the installation of MV HV Cold Shrink & Heat Shrink Joints and Terminations.

Contact T&D for Alroc tools and also a complete of cable jointing tools suitable for cable insulation removal and “easy-peel” screen stripping.

With a multitude of jointing tools available from several manufacturers, T&D decided to ask an industry expert in the jointing and terminating of MV, HV and EHV cables for an impartial and considered review of the new jointing tool manufactured by Alroc.

“Having used all types of jointing tools during my years this is by far the best and most consistent tool available. Alroc CWB/18-60-FEP has a working range of 18-60mm over the semi-conductive screen effectively covering 99% of all 11kV and 33kV MV HV power cables. The cable jointing tool design is based on rollers so no grease is needed for the cable peeling process.”

“The cutting blade can be used to chamfer the leading edge for pre-moulded HV cable terminations. Finally, the finish is another level” comments Karl McFadden (Cable Systems Application Engineer at Pfisterer).

The “Blue Tool” from Alroc creates a smooth finish to the insulation screen reducing sanding requirements by the jointer for bonded screen diameters up to 60mm. Operate using a consistent rhythm when turning the Alroc CWB/18-60 tool to achieve a smooth and clean finish without waves or “ghost-marks”.

Pictured : Alroc CWB18-60 Bonded Semi-Con Removal Tool

More

• Removing LC Shield MV Medium Voltage Cables – Alroc PF3/06
• Cable Peeling Tool HV High Voltage Cables – ALROC AMF5 55-160 NSCF
• MV HV Power Cables & How To Remove Fabric Layers – Some Cable Jointers Tips
• Removing Outer Sheath HV EHV Cables – Alroc DMSR/80-160

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Safety Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation earthing, 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 

T&D Distributors | 3M | Prysmian | Nexans Euromold | Elastimold | Pfisterer CONNEX

Cable Peeling Tool HV High Voltage Cables – ALROC AMF5 55-160 NSCF

Jointers Cable Tools | Low Medium High Voltage | LV MV HV 11kV 33kV 66kV 132kV

• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Cable Peeling Tool (Motorised)

Remove Bonded Semicon Screen & XLPE Insulation From Extra High Voltage Cables

Alroc AMF5 55-160 cable peeling tools are used by HV-EHV cable jointers for the removal of XLPE insulation and shaving of semi-conductive (bonded semi-con screen) on transmission and distribution cables from 132kV up to 400kV.

Alroc AMF5 55-160 tool can be used on HV-EHV cables with an outside diameter range of 55-160mm and is designed to make the removal of high voltage polymeric cable insulation (XLPE) simple and efficient with significantly reduced sanding required by the cable jointer using a lower grit abrasive.

The cable jointing tool provides XLPE insulation removal and lengthening of the cable chamfer on the transition to enable installation of cable joints, terminations or connectors.

Alroc AMF5 55-160 is a motorised HV-EHV underground cable peeling tool used in conjunction with the Alroc BMFD/50-160 tool when chamfering HV cables – the jointing tool will perform a cable chamfer but not pencilling of high voltage power cables.

Tools also available to remove bonded screens from 11kV/33kV cables with XLPE insulation.

Cable Tool Capability

• Diameter 55-160mm
• Bonded Semicon Thickness Capacity 3mm
• Remaining Length Of The Semicon 80mm
• XLPE Cable Insulation Thickness 35mm
• Tool Guiding Ball Bearings (No Silicone Required)

Associated Cable Jointing Tools

Alroc DMSR /80-160 High Voltage Outer Cable Sheath Stripping Tool
Alroc CHN4/50-110 NS High Voltage XLPE Insulation Tapering Tool
Alroc GR I-R TE – High Voltage Bonded Semicon Scraping Tool

T&D are leading stockist for the complete range of Alroc Cable Tools for removing cable sheath, insulation and screen from LV, HV, HV and EHV power cables.

Alroc AMF5 55-160 NSCF Cable Jointing Tool

Here in the video the Alroc jointing tool is shown preparing and shaving the semicon screen on a 400kV 2500sqmm EHV cable with polymeric XLPE type insulation.

♦ Bonded Semiconductor Removal – the semicon screen is removed in a controlled and steady preparation (16 wheels rolling around the cable) effectively shaping the cable round over the XLPE insulation. A constant diameter over the XLPE insulation is achieved preventing the tool blade from digging or cutting into the insulation.

♦ XLPE Insulation Removal – the back-iron enables the cable jointer to set the pitch of the tool thus making the rotation of the cable tool easy when removing the high voltage XLPE cable insulation.

Image : Goodbye Glass. Jimmy Nicklin (HV EHV Jointer) – the Alroc AMF5 55-160 tool removes the need for HV jointers to “glass” the outer conductive sheaths as the highly precision engineered cable jointing tool provides accurate stripping of cables in a motor controlled rather than manual process.

XLPE Cables HVDC

The design and construction of the transmission grid of the future with overhead transmission lines and underground cable required to meet future demand of electricity supply has led to the development by ABB of XLPE DC cables rated higher than 500kV.

The EirGrid East-West Interconnector (EWIP) links the high-voltage power grids of Ireland and Great Britain by means of an HVDC Light interconnection. The interconnector enables Ireland to import and export power to and from Britain, thereby creating a more competitive home market and reducing consumer prices.

ABB were responsible for delivering the entire solution – including design, engineering, type testing, manufacture, civil works, cable pulling/laying, cable jointing, trenching, installation and commissioning. The video shows the loading of the high voltage cable for the project EirGrid East West Interconnector (EWIP) that took place in April 2012 in Karlskrona, Sweden.

Image: ABB. 525kV DC XLPE Cable Insulation – Extra High Voltage EHV

More

• Removing LC Shield MV Medium Voltage Cables – Alroc PF3/06
• Removing Bonded Semicon Screen 11kV 33kV Cables – Alroc CWB18-60
• MV HV Power Cables & How To Remove Fabric Layers – Some Cable Jointers Tips
• Removing Outer Sheath HV EHV Cables – Alroc DMSR/80-160

Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Safety Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation earthing, 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 

T&D Distributors | 3M | Prysmian | Nexans Euromold | Elastimold | Pfisterer CONNEX