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Roxtec Cable Seals – Sealing Cable Ducts In Substations Under Running Water Conditions (VIDEO)

Sealing Cables

• uploaded by Chris Dodds | Thorne & Derrick Sales Marketing Manager
  Author | Gavin Cornall from Roxtec 

Gavin Cornall (Roxtec)

Roxtec are the world leading manufacturer of cable and pipe sealing transits to protect against water ingress, gas migration and fire spread.

The following article by Gavin Cornall (Global Sub-Segment Manager T&D at Roxtec UK & Ireland) discusses cable sealing applications during running water or “flood” conditions.

Firstly, running water presents a major sealing issue for the installation of mastic type seals, curing and drying is almost impossible. This can place “stress and strain” on work programme completion times, especially approaching handover phase.

Secondly, this applies to any solution used to seal large power cables whether in a one cable, one duct format or passing in a trefoil formation through a larger duct. Such as 11kV and 33kV power power cables feeding MV substations.

The ability of the cable seal to provide reliable operation under high water pressure is essential – the flexibility of the cable seal to be installed during running water conditions is equally crucial.

Roxtec have inspected many seals where over time the cable has caused the sealant to rip or pull out of the substation wall.

Roxtec have also seen due to the weight and orientation of the cables, its almost impossible for the installer to space the cables to get sufficient coverage of compound around the cables to maintain a seal.

Roxtec Cable Transits provide effective protection to LV HV substation cables against flood damage and water penetration be it in dry or wet conditions.

In the Whitepaper we commissioned from EA Technology on Humidity Effects In Substations, I was pleased to see the emphasis on cable retention, both in normal and fault conditions.

It highlighted what I already thought, which is that without the ability to retain, the cable seal will fail over time.

The cable seal may fail on day 1 or year 1 but ultimately it will fail over time.

Cable Sealing – Key Considerations

I would ask the following questions when evaluating cable sealing technology options from either a design, specification or installation perspective.

1) Can it be installed in “running water conditions” – if yes, look a little deeper into what that actually means.

• Do you have to buy additional cable seals so you can install on both sides of the wall?
• Do you have to follow a special methodology which is more onerous than the normal installation?
• Is the installation sealed instantly or is there a drying or curing time? Is this still dependant on staying dry for an extended period?

2) Can the cable sealing solution cope with the weight and flex in operation?

• I would always ask what is the pull out force needed to pull out the cable from the cable seal or sealant?
• If that retention is based on unistrut or clamps on racking it won’t work as the cable will still move in operation at its point of seal.

Roxtec UG Cable Seal

Advanced Specification Sealing For MV Substation Cable Ducts

When Roxtec developed the UG range, we had a very specific set of tests in mind given our understanding of these 2 issues. We developed a cable seal that was even better than our blue rubber on constant pressure. We quickly realised it could be installed on running water just like its blue cousin, the Roxtec Multidiameter cable seal module.

But most importantly, Roxtec developed specific testing for cable retention and flex.

Roxtec UG Substation Cable Seals

We wanted to show Roxtec cable sealing solutions could maintain their seal, whilst the cables were pulled, bent and twisted, beyond the maximum bend radius of the cable.

All this whilst we cycled the temperature between +4ºC to +40ºC.

Needless to say it not only worked but it went beyond our expectations.

Our Roxtec H3 200 seal in fact had in excess of 3300nm put on it without failure, that’s over 336 kgs of pull out force!

So in conclusion, I would say if you only take one thing away from reading this article it is always consider: 1) Running Water Installation 2) Cable Retention Performance

Tweets by RoxtecLtd

THORNE & DERRICK SPECIALIST ELECTRICAL DISTRIBUTOR

LV ♦ MV ♦ HV

T&D distribute the most extensive range of LV, MV & HV Cable Jointing, Terminating, Pulling & Installation Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at LV, 11kV, 33kV and EHV transmission and distribution voltages.

• Key Products: MV-HV Cable Joints & Terminations, Cable Cleats, Duct Seals, Cable Transits, Underground Cable Protection, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Earthing & Lightning Protection, Electrical Safety, Cable Glands, Arc Flash Protection & Fusegear.

• Distributors for: 3M, ABB, Alroc, Band-It, Catu, Cembre, Centriforce, CMP, Elastimold, Ellis Patents, Emtelle, Furse, Lucy Zodion, Nexans Euromold, Pfisterer, Polypipe, Prysmian, Roxtec.

LV – Low Voltage Cable Joints, Glands, Cleats, Lugs & Accessories (1000 Volts)

MV HV – Medium & High Voltage Cable Joints, Terminations & Connectors (11kV 33kV EHV)

Cable Laying – Underground Cable Covers, Ducting, Seals & Cable Pulling Equipment

T&D, CATU Electrical Safety & Arc Flash Protection Specialists for SAP’s, Linesmen, Jointers & Electrical Engineers – Largest UK Stockist

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.

132kV Surge Arresters

Surge Arresters

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

This following Product Update is about 132kV surge arresters – the ABB PEXLIM surge arrester is manufactured and specified to provide overvoltage protection to high voltage 132kV electricity networks and gas insulated substations.

132kV

ABB PEXLIM is a 132kV surge arrester for protecting UK DNO electrical infrastructure including HV substations, transformers, switchgear, capacitor banks, motors, bushings and cables distributing high voltage power – usually the arrester is installed on overhead line to underground transitions on power networks.

The ABB design is safe, secure and effective.

💡 Did you know?

The ABB PEXLIM surge arrester is National Grid compliant and approved for 132kV electricity networks – contact us for technical specification support, competitive quotations and immediate delivery from UK stock for 132kV surge arresters.

• System Voltage 24-170kV
• Rated Voltage 18-144kV
• Nominal Discharge Current 10 kA_peak
• Surge Arrester Classification IEC 60099-4 Ed 3.0 Station; SL
• Surge Arrester Classification IEEE Std. C62.11-2012 Station
• Up To Line Discharge Class 4
• Mechanical Strength (SSL) 1600Nm

T&D can supply an extensive range of Joints, Terminations & Connectors MV HV to support the installation and routine maintenance of 132kV polymeric type (XLPE) insulated cable systems – this includes copper earth tapes manufactured by ABB Furse to provide effective Earthing & Lightning Protection to high voltage substations up to 400kV.

This range of HV sure arresters complements our line of 132kV link boxes with UK DNO and National Grid Approval.

Lightning strikes the ground in Britain about 300,000 times a year – for the utility industry this is a risk factor that must be countered by the MV HV substation designer, EPC or power distribution contractor.

UK DNO’s take the uninterrupted supply of electricity to our homes and business seriously, very seriously.

Use our #powercutmap for regular updates or if you can’t see your #powercut you can report it with just a few clicks https://t.co/vFgjOxBIER pic.twitter.com/HITQfFS97V

— Northern Powergrid (@Northpowergrid) June 15, 2018

Surge Arresters

T&D working with ABB can provide surge arresters for electrical protection of all types of medium/high voltage MV HV assets – view the Buyers Guide or better still call us to discuss your particular requirements. Surge arresters can be supplied with compliance to all UK DNO specification requirements including WPD, Northern Powergrid, UKPN and Scottish & Southern Energy (SSE).

ABB surge arresters protect HV electrical power supply systems against the catastrophic effects of lightning and switching overvoltages.

See also Surge Diverters | Sheath Voltage Limiters

Dowload here.

Causes Of Overvoltages In High Voltage Electricity Networks

To view further information about ➡  Medium Voltage 11kV – 33kV Surge Arresters

Thorne & Derrick Working With ABB

Since 1985 Thorne & Derrick based in the UK have been specialist distributors of LV, MV & HV Cable Installation, Jointing, Substation, Arc Flash Clothing & Electrical Equipment – customers include UK and worldwide contractors, specifiers, traders and end-users involved in cable installations, sealing cable ducts, cable jointing, substation earthing, overhead line and electrical construction at Low, Medium & High Voltages up to 132kV.

Should you require any technical support, specification guidance or would like us to visit you and discuss the range of ABB Surge Arrester products please do not hesitate to contact us – T&D are proud to distribute the ABB ranges of MV HV Electrical Equipment.

Chris Dodds (T&D) with Donald Thompson (ABB MV Surge Arrester Sales Manager) at Thorne & Derrick’s office in County Durham UK earlier today.

Suppliers of MV HV Joints, Terminations & Connectors | 3M | Prysmian | Nexans Euromold | Pfisterer | Elastimold | NKT

Road Lighting Feeder Pillars

T&D Main UK Suppliers Of Lucy Zodion Feeder Pillars

Feeder Pillars

Case Study 1

Working with the M&E Contractor and their Consultant Engineers, T&D have supplied road lighting feeder pillars to provide reliable low voltage power distribution to an urban design and infrastructure project predicted to deliver £74.2m in gross value added to the local economy in South Yorkshire.

For further information about the complete range of pillars please see Lucy Fortress Feeder Pillars.

• Application: Feeder Pillar To Provide Road Lighting
• Type: Single Door Galvanised Steel Feeder Pillar
• Pillar Size: Height 1294mm x Width 1100mm x Depth 400mm
• Order Code: Lucy Zodion Fortress 12-HDP-3
• Notes: Road Lighting Feeder Pillars With Lucy SS12 Miniature Photo Cell Unit (LUX) 
• See Complete Range Of Feeder Pillars

Lucy Zodion Fortress 12-HDP-3 Feeder Pillar Specification

• Height Above Ground 1294mm
• Root Section 350mm
• Width 1100mm
• Depth 400mm
• Door Opening Height 1007mm
• Door Opening Width 1000mm
• Working Depth 375mm
• Pillar Backboard Size 1080x1075mm

Fortress Feeder Pillars From Lucy Zodion : Galvanised & Stainless Steel 20+ Sizes

Feeder Pillars Features & Benefits

The road lighting feeder pillars were supplied by T&D with anti-vandal lock, detachable root section and painted to RAL9005 Abcite Black colour scheme.

Abcite thermoplastic powder coatings provide tough, impact resistant protection for outdoor pillars without a primer undercoat – excellent corrosion and UV protection.

Project Details: Advanced Manufacturing and Research Centre Campus (AMRC2), Sheffield UK – 860,000 sq ft of advanced manufacturing and research space, 468,000 sq ft for a residential training centre and conferencing and 16,000 sq ft for outdoor and indoor recreation. The original University-backed AMRC on the Advanced Manufacturing Park (AMP) now comprises more than 40 companies including Rolls-Royce and Boeing – a nucleus of innovation, research and technology designed for collaboration and rapid commercialisation.

How we secured #greenbelt release for AMRC2 at the former #Sheffield city airport: https://t.co/UGF0ggVjFn pic.twitter.com/I6lYWQfFRx

— DLP Planning (@DLPPlanning) July 11, 2016

The feeder pillars will distribute power to the exterior lighting columns

Lucy Zodion Westminster Feeder Pillars – retractable in-ground “pop-up” power pillars

Feeder Pillars

T&D distribute the complete range of Lucy Zodion feeder pillars for low voltage power distribution to the building services, rail, construction, utilities, oil and gas, retail and leisure, ports, airports and heavy industries – GRP, cast iron, galvanised and stainless steel types customised to your application:

• Pre-Wired Power Distribution Panels (Outdoor IP65 & Underground Retractable)
• Substation Power, Cable Distribution & LV Interconnection Panels (Onshore Wind)
• DNO Single & 3 Phase Network Pillars (25A-800A)
• Network Rail & Electrification – Station & Trackside Pillars (incl. London Underground)
• Low Voltage Connections – New Housing & Commercial Development Pillars (LV)
• Defence Estates MoD – Load Shedding Fuse Pillars
• Lighting Feeder Pillars – Street, Road, Flood, Sports Stadium & Car Parks
• BT Telecommunications & Interface Pillars
• Environment Agency – Rivers, Coastal & Waterways
• Cast Iron Electrical Distribution Pillars – National Heritage & Historic Buildings
• Also: Street Lighting Cut Outs

➡ For further information about how Lucy Zodion provide control and power distribution products for street lighting applications, please review the Lucy Titan (Cut-outs) and Lucy Trojan (Isolators) ranges of products.

➡ Contact us to discuss how T&D and Lucy Zodion can provide innovative custom design solutions and ex stock delivery of standard feeder pillars to your project.

Read our Blog with Lucy Zodion: Cut-Outs & Isolators – What’s the Difference?

PFISTERER Training Courses – Cable Jointer Training For MV HV CONNEX Connectors

MV CONNEX Training With PFISTERER | Thorne & Derrick

Cable Jointer Training

PFISTERER have announced the launch and opening of their Medium Voltage CONNEX & SEANEX Training Courses covering CONNEX Size 1 to 3-S-XL products up to 52kV – the training courses are being conducted from their new purpose built training facility in the UK.

Safety and reliability are essential factors in medium voltage power system applications placing particular demands on assembly and installation skills of the cable jointer.

It is therefore imperative that all medium / high voltage cable jointers who work with CONNEX products are trained and certified by PFISTERER.

You can contact Thorne & Derrick to arrange your PFISTERER training course today.

• Theoretical product and PFISTERER application overview
• Full explanation and demonstration of the installation procedure
• Full CONNEX assembly undertaken by candidates

hv Training Courses

For specific dates about scheduled PFISTERER Training Courses please call us.

PFISTERER are able to offer training on site, please contact us to discuss your requirements and to obtain a quotation.

Plug-In Connectors For Medium & High Voltage Cable Connections

Jointer Certification

If successful certification will be issued by PFISTERER – Jointer Certificate is valid for 3 years.

PPE whilst attending the training course will be required to be provided by participants – boots, glasses, gloves, flame retardant workwear.

If the participants require accommodation whilst at PFISTERER this is borne by the participants.

For training courses held at PFISTERER Orgreave, PFISTERER will provide refreshments and lunch if appropriate.

On Site Jointer Training

Contact us to discuss your specific medium/high voltage jointing training requirements.

Thorne & Derrick recommend the use of Alroc tools for the preparation of medium/high voltage cables to effectively remove the cable sheath, semicon screen and insulation.

PFISTERER Cable Jointer Training Courses & Training Facility

Contact us to book your PFISTERER Training Course and maintain your warranty.

Spaces are available for up and coming courses.

PFISTERER offer a wide range of other training courses that can be tailored to suit your needs please contact T&D for further information.

Meet The Pfisterer Trainer

Jon Reed (HV Cable Jointer & Trainer for PFISTERER Accessories) – here a watchful Jon is supervising the initial 33kV cable preparation prior to installing the CONNEX connectors at PFISTERER’S new Jointer Training Facility dedicated to ensuring excellent workmanship, competency and in-date certification for MV HV Cable Jointers working on gas insulated switchgear and high voltage electrical equipment.

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, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

T&D stock and distribute PFISTERER CONNEX Connectors for medium / high voltage cable connection and termination to electrical systems – we provide competitive prices for PFISTERER CONNEX connectors used to terminate and connect polymeric insulated MV-HV cables into gas insulated switchgear and electrical equipment from extensive UK stocks.

Electrical Safety from Pfisterer

Voltage Detectors | Phase Comparators | Insulating Poles | Portable Earthing  

Overhead Line Equipment

Overhead Line Equipment – Suppliers Of Medium & High Voltage Electrical Equipment

Thorne & Derrick International, are Specialist Distributors of an extensive range of Overhead Line Equipment used to erect, construct and maintain LV-HV power lines.

We service UK DNO’s, global utilities and their contractors involved in the installation and maintenance of Overhead Transmission and Distribution power lines with electrification equipment including 33kV joints, terminations and connectors and arc flash clothing to protect linesmen and jointers against the risks and hazards associated with arc incident.

Need Products Quick?

T&D can source all your Overhead Line Equipment – we provide excellent customer service and competitive prices with UK or overseas delivery.

Overhead Line Equipment

66kV 132kV 275kV 400kV up to 765kv

Electrical Safety

Voltage Detectors ♦ Insulating Sticks ♦ Short Circuiting & Earthing ♦ Earth Clamps ♦ Phase Comparators ♦ Insulating Gloves ♦ Insulated Tools ♦ Earthing Connections ♦ MV HV EHV

T&D, Largest CATU Electrical Stockist

Cutting & Crimping Tools

Copper ♦ Aluminium ♦ ACSR ♦ ACC ♦ AAAC ♦ Cutting & Crimping Tools

Hydraulic heads and battery tools for power line cutting and compression of crimping connectors, terminals and joints used in high voltage electrical transmission and distribution.

T&D, Cembre Stockist

High Voltage Joints & terminations

Cable Joints ♦ Cable Terminations ♦ Sealing Ends ♦ Surge Arresters

T&D, 3M Electrical Stockist

Cable Tools

Mid Span Strippers ♦ Cable Strippers ♦ Ratchet Cable Cutters (ACSR)

➡ Also: Cable Jointing Tools MV-HV Underground Cables (Remove & Strip Sheath, Insulation, Semicon Screen)

Insulators

Pin Insulators (11kV 33kV Porcelain) ♦ Insulator Pins (Line & Pilot Pins) ♦ Cap & Pin Disc Insulators ♦ Staywire Insulators 11kV 20kV 33kV ♦ Low Voltage Insulators – Coachscrew & Reel ♦ Conductor Rail Insulators – Porcelain ♦ Toughened Glass Cap & Pin Disc Insulators

Insulator Fittings

Ball Ended Fittings ♦ Socket Ended Fittings ♦ Overhead Line Shackles ♦ Yoke Plates ♦ Links & Plates ♦ Arcing Horns ♦ Sag Adjuster Sets

Credit Nexans – contact us for HV Cable Joints, Terminations & Connectors 

Credit ABB – Joint, Terminate & Connect Medium & High Voltage Cables

Thorne & Derrick

T&D are UK distributors and worldwide exporters of LV, MV & HV Cable Installation, Cable Jointing, Duct Seals, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

Since 1985, T&D have established a solid reputation based on Service, Integrity and Trust – contact us with your enquiry.