uploaded by Chris Dodds - reading time 2 minutes
The following Cable Jointing Tools are approved and used by Jointers working for or on behalf of Scottish Power Energy Networks (SPEN) for the preparation of 11kV/33kV power cables prior to the installation of MV HV Joints, Terminations & Connectors.
| Cable Jointing Application | Tool Type | Comments | Manufacturer |
| MDPE Cable Sheath Stripper | KMS-S | na | |
| Cable Stripping Pliers | Alroc PG3 | Width 2.8mm cutting wheels, for cable diameter 30-55mm PICAS | Alroc |
| Cable Stripping Pliers | Alroc PG4 | Width 3.0mm cutting wheels, for cable diameter 45-75mm PICAS | Alroc |
| XLPE Screen Stripping Tool (Easy strip/Peelable) | Alroc LHM1R | Adjustable screen scoring tool 14-40mm diameter cables | Alroc |
| XLPE Screen Scoring Tool | Prysmian TT2352/1 | 0.4mm (for use on 33kV cables) | Prysmian |
| XLPE Screen Scoring Tool | Prysmian TT2352/2 | 0.6mm (for use on 11kV cables) | Prysmian |
| XLPE Screen Stripping Tool (Fully Bonded Screen) | INT.BZ Mod. 1714 | 10-52mm | Boddingtons |
| XLPE Screen Stripping Tool (Fully Bonded Screen) | NKT 500 30 | 16-40mm | NKT |
| XLPE Screen Stripping Tool (Fully Bonded Screen) | Alroc ASC40R2 | 38-60mm diameter cables (630sqmm cables) | Alroc |
| XLPE Adjustable XLPE Insulation Stripping Tool | Alroc BRMrd1 | 14-40mm | Alroc |
| XLPE Adjustable XLPE Insulation Stripping Tool | Alroc BRMrd2 | 38-60mm | Alroc |
Alroc Tools | Remove Sheath | Remove Screen | Remove Insulation
♦ See also:Â Scottish Power Energy Networks Approved | Cable Joints, Terminations & Electrical Equipment LV HV
âž¡ Visit Alroc to view the complete range of Jointers Tools for stripping and preparing 11kV/33kV power cables – cable tools also available for 66kV-132kV cable jointing and preparation.
Insulation | Screen | Sheath | Cable Preparation Tools 11kV 33kV
JOINTÂ ♦ TERMINATEÂ ♦ CONNECTÂ ♦ GLANDÂ ♦ CLEATÂ ♦ CRIMPÂ ♦ DUCTÂ ♦ SEALÂ ♦ REPAIRÂ ♦ CABLE ♦ SPLICE ♦ INSULATE
Alroc Cable Jointing Tools | MV HV EHV 11kV 33kV 66kV 132kV
uploaded by Chris Dodds - reading time 5 minutes
Alroc are market-leading manufacturers of cable jointing tools to ensure the accurate preparation of power cables working at Low, Medium & High Voltage.
Alroc CAMF4/40-90-BBCF multifunction cable jointing tool is used to remove the outer bonded semi-conductor and the insulation from medium/high
voltage power cables.
1. Alroc CAMF4/40-90-BBCF enables the MV-HV Cable Jointer to remove the bonded semiconductor
No silicone – the ball bearings in contact with the MV-HV cable enable an easy rotation of the cable preparation and jointing tool.
Low Roughness Over Insulation
Bonded semiconductor removal – very steady (16 ball bearings rolling around the cable), shaping the cable round over the insulation , constant diameter over the insulation, prevent the blade from digging into the insulation, perform a chamfer on transition between the insulation and the semiconductor.
2. Alroc CAMF4/40-90-BBCF enables the MV-HV Cable Jointer to remove the polymeric insulation (XLPE)
The tool includes a function for the jointer to simply adjust the outer cable diameter for removal of cable sheath – once the cutting blade is correctly set and positioned the cable jointer rotates the tool around the MV-HV cable in a circular motion. Adjustment of the Alroc tool is simple using the back-iron for clean and consistent cutting of the power cables.
Fine adjustment of the semiconductor shaving depth is possible for precision cable engineering of the semicon cut. Similarly, adjustment of the cable cutting depth using the Alroc CAMF4/40-90-BBCF is possible – the ball bearings can be switched to rotate statically to enable the cable jointer to create a chamfer and groove in the medium/high voltage cable insulation.
The Alroc CAMF4/40-90-BBCF jointing tool performs an excellent semicon cut to ensure the safety and reliability of the cable joint, termination or connectors.
âž¡ Watch the complete Alroc video here:
Alroc CAMF cable preparation tools can be split for removal by the Jointer – this is a particular benefit for the cable jointer where they solder the cable connector allowing the tool to be easily removed from the HV cable when being used to strip and prepare offshore and submarine cables prior to installing HV joints, terminations or connectors.
The ALROCÂ CAMF440 90 tool features a push/button locking system and also facilitates the Jointer to create a groove in the XLPE insulation (with their blade option) and shave bonded semi-con screens – the tool has 16 wheels rolling against the cable with 4 (or 8) contact points. The unique design of the Alroc tool prevents the cutting blade digging into the XLPE insulation when preparing high voltage power cables with XLPE insulation.
These Jointers Tools are used typically on 132kV high voltage transmission cable circuits, in accordance with EC 60840, to prepare XLPE single core power cables for jointing and termination applications into GIS Switchgear and installation of AIS Cable Sealing Ends.
Back-iron that enables the cable jointer to tune the pitch of the jointing tool thus making the rotation of the tool easy when removing the insulation from medium/high voltage power cables (MV-HV).
Chamfering – HV High Voltage Cables XLPE Insulation
Grooving – HV High Voltage Cables XLPE Insulation
Shaving – HV High Voltage Cables XLPE Insulation
LVÂ ♦ MVÂ ♦ HV
T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Installation & Cable Pulling Equipment – we service UK and international clients working on underground cables, overhead lines, substation earthing and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.
The Alroc range of jointing tools are extensively used to enable the installation of MV HV Joints, Terminations & Connectors including Prysmian, Elastimold, 3M, Pfisterer and Nexans Euromold.
MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)
T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.
âž¡ Visit Power Blog.
LV MV HV 11kV 33kV 66kV 132kV Cable Tools for further info see: Cable Jointing Tools
uploaded by Chris Dodds - reading time 2 minutes
Prysmian cable jointing tools include a complete range of cable sheath/jacket strippers specified to strip and remove the cable jackets on concentric neutral cables, flat strap neutrals and PILC cables including the Prysmian AIRGUARD range of Low Voltage & Medium Voltage Power, Instrumentation and Control cables – PG cable jacket and sheath strippers are suitable for low, medium and high voltage cable sheaths.
| Prysmian Order Code | Cable Jacket OD Range Inches (mm) |
| Prysmian PG2-MV-2020 | 0.80-1.40 (20-36mm) |
| Prysmian PG3-MV-1018 | 1.00-2.00 (25-51mm) |
| Prysmian PG3-MV-2833 | 1.00-2.00 (25-51mm) |
| Prysmian PG4-MV-2833 | 1.85-3.00 (47-76mm) |
| Prysmian PG5-MV-3535 | 2.55-3.70 (65-94mm) |
| Prysmian PG6-MV-3535 | 3.14-4.90 (80-124mm) |
Please note – the last number in the Prysmian part number indicates the cable tools blade depth – the first two digits indicate the depth in millimetres of cut for the circumferential cut and the last two digits indicate the depth in millimetres of cut for the longitudinal cut.
Example – Prysmian PG4-MV-2833 contains 4 circumferential blades to cut the cable sheath with a depth of 2.8mm and one longitudinal blade with a cable cutting depth of 3.3mm. Replacement blades are available.
PG Cable Jacket Strippers
♦ Also: Lead Lifting Tools, Cable Sheath Spreaders, Semicon Removal Jointing Tools, XLPE Insulation Removal Tools.
T&D are Specialist Distributors of High Voltage Joints & Terminations to UK and international customers – we guarantee expert technical support across an extensive range of core products to joints, splice, terminate or connect medium and high voltage (MV-HV) cables.
by Chris Dodds T&D - estimated reading time 5 minutes
Preparation of MV-HV cables is critical to the electrical performance and reliability of medium/high voltage power cable circuits – failure to correctly strip, remove or cut cable construction layers using the appropriate Cable Jointing Tools can build-in future failure to the installed medium/high voltage cable joint, termination or connectors.
The following LinkedIn Comments provide expert guidance and advice on how to remove fabric layers from MV-HV cables without jeopardising or compromising cable functionality.
Cable type pictured is 15kV Medium/High Voltage power cable
David Lundin (Contractor Compliance Specialist at Western Power)Â – remove the cable fabric layer by gloved hand and clean away residual material with carbon tetra chloride or equivalent cable cleaners.
Erik Liljedahl (Site Intallation Manager on NKT HV High Voltage Cables) – carefully remove the band with a knife, be careful not to damage the cable conductor strands, then brush the conductor with a wire brush. This fabric is to prevent the inner semi-conductor to fall between the conductor strands during cable production and allows the XLPE insulation to move during heat treatment – this fabric is usually a present layer on 100kV-600kV cables but also 11kV-33kV.
Peter Hembry (Director at Hembry High Voltage Services) – unravel to the primary insulation and pull it against the blade of a sharp knife all the way around, then give it a quick lick of heat to catch any strands you may have missed.
Ben Lanz (Director, Applications Engineering at IMCORP) – unless this is an unusual cable design, the inner semi-conductor (conductor shield) layer should come off cleanly. Any residue can be typically wiped off with a lint free cloth. After you wire brush the aluminium oxide off the conductor and immediately apply the oxide inhibitor, you will be ready to apply the connector (either compression or mechanical shearbolt). If you are not familiar with MV and HV cable in general, I recommend jointer/splicer training.
Mark Jones (Renewables Marketing Manager at Synergy Cables USA Ltd) – box cutter with a new blade works well. Cut slowly while keeping tension by rolling it under itself.
David Tompsett (Project Engineer at Northern Ireland Electricity)Â – seen this conductor screen removed by using twine instead of a knife. Good clean edge and no risk of damage to the outer conductor strands of the MV-HV cable.
Glyn Moore TMIETÂ (Electrical Tech / Construction Manager)Â – as previous comments to remove the fabric either under or over wrapped once you are square with your insulation pull the fabric onto a sharp blade away from conductor, bit of a flame from a heat shrink torch to remove loose fibres.Â
Darren Street (Cable Jointer at D+R Jointing Services Ltd) – sharp knife and a trained cable jointers touch (also blow it over with a gas torch to catch any wayward strands).
Ciaran McDowell (HV / LV Authorised Cable Jointer)Â – used it on high voltage tails in medium/high voltage transformers a few years ago. Use a sharp knife like a Stanley and pull the fabric under tension against the blade. This worked well just leaving a few threads to trim off.Â
Eoin MacQuaile (Junior Quantity Surveyor at Obelisk) – use a piece of twine and wrap it around the cable material and use a saw-like motion to heat and cut the fabric without scoring the aluminium. This method evenly cuts insulation and wrapping without damaging conductors.
Kevin Kruse (Vice President, Engineering and Technical Support)Â – I have completed many cable termination demonstrations and we were always made fun of because we used string, but this is safest method. Second is some of the tools like Speed Systems or Ripley Jointing Tools where you can set a safe depth just shy of the conductor diameter. Cable jointers should never use a knife or box cutter.
Tim Poirier (HV Systems Manager- North America TE Connectivity)Â – best method is to tear it and then using a cable splicing knife at the cut back tearing it against the blade being careful not to nick the aluminium if any strands of the fabric remain burn off with a heat shrink torch.
Justin Kelly (Underground Network and Cable Splicer at JEA) – knife work, the cornerstone of legitimate medium voltage cable splicing and jointing. This is why splicing has historically been taught in 4-5 year apprenticeships, not 6 week classes. Skill takes time.
Stephen Davies (Technical Policy Engineer – Western Power Distribution) – this should be pulled against a static knife edge by the cable jointer so as to not damage the aluminium conductor. It is a semiconductor woven tape that prevents the semicon extruded layer bedding between the aluminium strands.
âž¡ String is simple but effective for clean cutting without damaging underlying cable conductors.
T&D are UK Main Stockist for Alroc Tools suitable for all types of LV MV HV cable preparation prior to installing cable joints, terminations and separable connectors.
International standards and local practices vary considerably, here a Indian cable jointing team are shown using knives and hacksaws to remove cable sheath jacket and primary insulation from Prysmian 220kV to 550kV EHV cables. Image: Audhesh Giri (EHV Cable Jointer/Cable Supervisor)
Here a smooth finish to the XLPE insulation on a high voltage power cable has been achieved with use of a Makita sanding machine
THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, copper earth tapes and substation earthing at LV, 11kV, 33kV and EHV.
Based in the UK, are the Specialist Distributor for the Nexans Power Cable Accessory range of Screened Separable Connectors (Euromold), Cold-Applied (AIN AFN) & Heat Shrink Joints (JTS) & Cable Terminations (MONO) for Medium Voltage Power Systems up to 66kV; we hold extensive stocks and provide the most competitive commercial and technical levels of customer service in the UK.
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