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

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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

Landlords LV Distribution – LV Low Voltage Feeder Pillars

Feeder Pillars

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Thorne & Derrick are the leading designer, distributor and supplier in the UK of feeder pillars manufactured by Lucy Zodion – a complete range of standard, customised and pre-wired types from the Lucy Fortress range of feeder pillars are available to suit all LV Electrical Power Distribution requirements.

This includes power distribution pillars to provide LV electricity supply to new housing developments, multi-occupancy buildings and permanent supply kiosks for properties.

Here follows an example of a Landlords Feeder Pillar specification highlighting the flexibility and capability of Thorne & Derrick to liase with consultant engineers and specifiers to meet the needs and electrical power requirements of the residential, housing and accommodation market sectors.

Landlord’s Services

FEEDER PILLARs

Mechanical & Electrical Engineering Services – Manor House Development (Travelodge Addendum Specification)

A 60kVA 100A 3 phase electricity supply shall be provided.

This supply shall be terminated in a 100Amp 3 phase service cut-out mounted on a class 0 timber backing board within a Landlords feeder pillar.

The feeder pillar / control cabinet shall be vandal resistant IP65 hot dipped galvanised steel cabinet as per the Lucy Fortress Pillars or equal and approved.

The feeder pillar shall be painted to match the lighting columns and fitted with a Yale Lock or equal and approved.

Provide a new 100A 3 phase metal cased distribution board enclosed within a feeder pillar to serve the landlords services i.e. external lighting, vehicle charging points, CCTV, petrol interceptor.

All distribution boards shall be provided with integral main switch disconnectors miniature circuit breakers, blanks, lockable doors and 3 sets of keys to each of the door locks.

Provide PVC/PVC insulated single core cables from the service cut-out to the revenue meter and from the revenue meter to the distribution board.

Distribution boards shall generally employ type C miniature circuit breakers for final sub circuit protection.

The distribution board shall be provided with Class II surge protection as detailed in BS EN 62305.

The distribution board shall be sized to include a minimum of 25% spare outgoing ways arrnaged evenly over each phase, which shall be fitted with individual blanking plates.

Distribution boards shall employ miniature circuit breakers for final sub circuit protection. Circuit breakersshall be selected to take account of the thermal and magnetic effects of loads serrved, taking due account of any starting currents. Particular care shall be taken when selecting circuit breakers protecting circuits supplying LED driver units.

Distribution boards shall be labelled and scheduled in accordance with BS7671 – miniature circuit breakers shall comply with relevant British and European standards.

Galvanised & Stainless Steel | Cast Iron | GRP | Pre-Wired | Electrical Power LV

Largest UK Feeder Pillar Stocks – fast delivery from stock or on short lead-times

➡ Further Reading

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 Clothing & 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

Oil Barrier Heat Shrink Tubing for LV Low Voltage Paper PILC Cable Jointing

PILC Cable Joints & Connectors | Sicame

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Heat Shrink

PILC Cables Paper Insulated Lead Cables

Oil barrier heat shrink sleeves are applied to PILC cables to prevent the cable oil from dripping out and can be used to increase the cable insulation up to 33kV for joints and terminations. These oil barrier heat shrink tubes are made from high quality cross linked polyolefin material and are clear (transparent) – the heat shrink tubes can be supplied on continuous spools or pre-cut lengths.

Prior to jointing cables the paper insulated cables can be wiped down using cable cleaners to remove the oil residue and ensure clean jointing of cables.

Thorne & Derrick supply LV cable jointers with an extensive range of cable jointing kits (heat shrink, Cold Shrink, resin cast), cable jointing tools, underground cable protection and cable pulling equipment to enable the safe and reliable installation of low voltage cables 600/1000 volts.

Thorne & Derrick can recommend LV Jointer Training Courses for Jointers requiring Competency Certification to joint PILC cables covering :

• Identification Of LV Cable Types
• Single Phase Sub Service Transition Straight & Breech Joint
• Three Phase Sub Service Transition Straight & Breech Joint
• Single & Three Phase PILC Cutout
• Single & Three Phase PILC Pot End
• Three Phase & Single Phase PILC Service Joint
• Transition Breech & Straight Joint

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, Copper Earth Tapes, 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.

CATU Insulated Tools for Live Line Working to IEC 60900 up to 1000 Volts

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Insulated Tools

Live Line Working Tools – LV Cable Jointers Tools

Electrical Safety Equipment

The CATU Electrical range of insulated tools comply with the NF EN 60900 and IEC 60900 standards – these insulated tools are used by cable jointers and electrical engineers for live working and jointing cables up to 1000 volts.

CATU insulated hand tools are dielectrically tested to 10,000 volts AC by electrical testing and severe mechanical tests including impact tests, tearing tests and puncture tests to meet these standards and are for working live at nominal voltages up to 1kV AC and 1.5kV DC.

Contact us with your Sales Enquiries for the following product ranges – we stock and distribute the most extensive range of IEC 60900 insulated tools:

• Insulated Tool Kits
• Insulated Pliers & Cutters
• Insulated Spanners
• Insulated Sockets & Accessories
• Insulated Saws & Knives
• Insulated Screwdrivers
• Insulated Nut Spinners
• Insulated Link Extractors
• Insulated Hexagon Keys
• Insulated Box Spanners
• Other Insulated Tools
• Insulated Gloves

CATU Tools

IEC 60900:2018 

♦ Live Working Tools – Hand Tools For Use Up To 1000 V AC and 1 500 V DC

CATU Isomil insulated tools for live working cover all electricians and cable jointers requirements. Insulated tools are used by live working cable jointers on utility cables during connection, disconnection and cable fault repair of PILC, Consac, Waveform and XLPE SWA low voltage cables, 415V-600V.

From stock Thorne & Derrick can also supply complete LV Jointers Tool Sets and Jointers Tents to provide weather protection for utility workers carrying out maintenance, repair or installation services to both de-energised or energised power systems – for overhead line and pole working on cables and conductors we can supply a selection of insulating ladders compliant with EN 131 safety standards.

CATU Isomil Dual Material

Layer Insulating Tools

DUAL MATERIAL INSULATED TOOLS – FEATURES & BENEFITS

• Suitable for work on live cables, particularly low voltage (30cm area of a live bare wire, cable or conductor)
• Ergonomic hand tools
• Dual material with non-skid “softgrip” injected material for operator comfort

DUAL LAYER INSULATED TOOLS – FEATURES & BENEFITS

• Extensive product live for work on live cables; mainly used by LV Live Line Working teams
• Ergonomic insulated tools
• Dual-layer with a white insulating layer
• High mechanical strength in the layers due to dipping technique
• Steel with high mechanical properties

from CATU Electrical

CATU Electrical LV Live Line Working Tool Range

• IEC 60900 Insulated Pliers
• IEC 60900 Insulated Screwdrivers
• IEC 60900 Insulated Cutters
• IEC 60900 Insulated Hacksaws
• IEC 60900 Insulated Stripping Knives
• IEC 60900 Insulated Spanners
• IEC 60900 Insulated Ratchet Handles
• IEC 60900 Insulated Wrenches
• IEC 60900 Insulated Sockets

Electrical Safety Overhead Lines & Underground Cables

CATU Electrical Safety Equipment protects Senior Authorised Persons (SAP’s), Linesmen, Cable Jointers and Electrical Engineers during electrical construction and maintenance work on underground cables and overhead lines – typical applications include LV-HV cable jointing, fuse pulling, racking circuit breakers, electrical switching and live working.

For instance, insulating gloves offer personal protection against electrocution – durable, flexible, high dielectric and mechanical strength insulating gloves from 500V – 33kV.

The CATU MO-180-ARC is part of our range of arc flash helmets which is comfortable and safe when in use with insulating protection of the shell, shockproof for the head and eye and face protection againstof thermal effect. Easy to use – taking only 3 Seconds To Install.

Arc Flash Safety Helmet with Integrated Face Shield – CATU MO-180-ARC4

Insulating Matting | Voltage Detectors | Substation Kits | Phase Comparators

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

3M Wraparound Heat Shrink Cable Repair Kits Used For LV HV Mining Cable Sheaths

Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves – 3M HDCW

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

Wraparound Heat Shrink Cable Repair Kits

3M HDCW series heat shrinkable wraparound sleeve kits are suitable for cable sheath repair and jacketing sleeves – this includes heat shrink cable repair, Cold Shrink cable repair, 3M Scotch electrical tape and insulating resin based repair solutions using Scotchcast products for low and high voltage cables.

The cable repair sleeves are suitable for use with cable joints and as an additional corrosion protection on undamaged cables.

Thorne & Derrick supply the mining industry with 3M Heat Shrink Cable Repair Kits to re-instate cable insulation to damaged low and high voltage cable sheaths caused by mechanical stress, third party accident or cable corrosion in underground damp mining cable installations.

Image: International Banker

Repair Sleeves For Cables

3M Wraparound Heat Shrink Cable Repair sleeves are designed to quickly repair damaged cable jacketing. They are also suitable for use with cable joints and as additional corrosion protection on undamaged cables in hazardous, harsh and extreme operating environments in underground or surface mining applications.

3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve. Upon heating, the sleeve shrinks and the adhesive melts, thereby achieving a safe and watertight bond between the sleeve and the cable.

A corrosion proof metal clip is then used to fully close the heat shrink sleeve.

3M HDCW wraparound heat shrink cable repair sleeves are designed to quickly repair damaged cable jacketing – they can also be used to rejacket in-line cable splices.

HDCW wrap sleeves can be used as insulation material on cable and splices up to 1000 volts and as jacket repair material on cable up to 35kV. 3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve.

The design of the heat shrink wrap style sleeve allows it to be installed in tight spaces with ordinary heating equipment such as a heat shrink torch.

Thorne & Derrick International are the UK’s largest stockist of 3M Electrical Cable Accessories.

Cable Repair Solutions: Mining cable repair kits are available for BS6708 underground mining cables including – Type 11, Type 7, Type 7S, Type 7M, Type 307, Type 307S, Type 307M Flexible trailing cables for use with coalcutters and similar face equipment, Type 211, Type 201, Type 62, Type 63, Type 64, Type 321, Type 331 Flexibile trailing cables with galvanised steel wire pliable wire armouring for use as mine extension cables in quarries and coalface lighting.

3M HDCW Wraparound Heat Shrink Cable Repair Sleeve Features & Benefits

• Easy and quick to install
• Cost-efficient cable repair
• Reliable and tough thick wall heat shrink sheets
• No open cable needed – wraparound design for versatile cable repairs
• Good bonding to PE and PVC cable sheaths and jackets
• Maximum protection against mechanical stress
• Excellent resistance to even the harshest and hazardous area environments
• Forms a perfect seal to prevent moisture ingress into damaged cables

How to Install Wraparound Repair Sleeves

1. Position the heat shrink wraparound sleeve over the cable damage, joint or splice and close the metal channel
2. Apply heat using the heat shrink gas torch to shrink the sleeve onto the cable sheath and melt the adhesive liner
3. The finished sleeve is allowed to cool creating moisture proof and corrosion resistant cable seal

Cable Repair Sleeves – Installation

HEAT SHRINK WRAPAROUND REPAIR SLEEVES

3M HDCW SERIES DIMENSIONS

Cold Shrink Cable Repair

Where “hot-working” is not permitted due to atmospheric presence of flammable gases in potentially explosive atmospheres and hazardous area locations Cold Shrink tubes can be used to repair cables where access is possible to the open-end of the cable circuit – not suitable for repairing cables mid-circuit or mid-span unless cable can be isolated, uncoupled and disconnected from mains power supply.

If a flexible repair to cable is required we can provide 3M Scotchcast resin based cable repair solutions specified for marine and offshore with excellent resistance to seawater environments, submersion and exposure.

 Read Blog: Repairing Damaged Cables, Cable Sheath & Jackets

3M HDCW – Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves

➡ Should you require customer service or technical support on the selection or specification of LV MV HV Cable Accessories please contact us.

♦ For LV Low Voltage Cables | Cold Shrink Cable Terminations MV | Cold Shrink Cable Abandonment | Cold Shrink Tubes

3M Cold Shrink

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