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Cable Terminations | Heat Shrink Terminations MV HV Cables

Cable Terminations | Heat Shrink | Cold Shrink | Push-On | MV HV Medium & High Voltage

• Category: Nexans Power Cable Accessories Videos
• Product: Cable Terminations
• Type: Heat Shrink Cable Termination
• Cable Termination Range: Nexans MONOi | Nexans MONOe
• Voltage Category: MV Medium Voltage | HV High Voltage
• Voltage Classes: 11kV/12kV | 24kV | 33kV/36kV
• Manufacturer: Nexans
• Uploaded By Chris Dodds – Thorne & Derrick Sales & Marketing Manager

Cable Terminations

Nexans MONO type MV cable terminations are heat shrink terminations consisting of a single-piece heat shrink tube – the anti track tube features integral stress control co-extruded into the heat shrink tubing suitable for terminating single core polymeric insulated cables, such as XLPE or EPR, with working voltage classes of 11kV, 24kV and 33kV.

Both Nexans MONOi (Indoor Termination) and MONOe (Outdoor Termination) contain sufficient material to terminate 3 single core cables i.e. 3 phase cable termination kits.

Nexans terminations are available in both heat shrink, cold shrink and slip-on type technologies for terminating cables into switchgear, transformers and pole-mounted applications – single core termination kits are available for MV cables with copper wire or copper screen and armoured/unarmoured construction. The cable termination accommodates both shearbolt cable lugs or crimp lugs.

Nexans MONOi

MV HV Heat Shrink Indoor Cable Terminations

Up To 33kV

The following table enables the selection of Nexans MONOi indoor heat shrink terminations for 11kV, 24kV and 33kV voltage cables:

Nexans MONOe

MV HV Heat Shrink Outdoor Cable Terminations

Up To 33kV

The following table enables the selection of Nexans MONOe outdoor heat shrink terminations for 11kV, 24kV and 33kV voltage cables:

➡ More Cable Jointing Videos | Heat Shrink Joints Transition | Heat Shrink Joints Straight | Separable Connectors | Cold Shrink Joints | Cold Shrink Terminations

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 

Euromold

The Euromold range of Separable Connectors are suitable for the termination of power cables onto all MV-HV bushing interfaces:

View the complete range of Nexans Terminations | Joints | Connectors

Euromold Cable Connections – MV Switchgear GIS Connectors Type Use With Ormazabal CGMCOSMOS

• by Chris Dodds T&D - estimated reading time 5 minutes

Ormazabal are leading manufacturers of Medium Voltage Switchgear & Electrical Distribution Products – this includes:

• Primary Distribution Switchgear
• Secondary Distribution Switchgear
• Transformer Substations
• Distribution Transformers
• Low-voltage Boards
• Medium Voltage Products – Protection, Control & Automation Of MV Networks
• Renewable Energy Applications

The following post shows the range of Euromold Connectors which are suitable for and manufacturer approved for use with Ormazabal medium/high voltage equipment bushings according to IEC 50181. BS EN 50181:2010 is the industry standard for plug-in type bushings above 1kV up to 52kV and from 250A to 2,50kA for MV-HV switchgear and transformers.

Euromold Connectors & Acessories

EN 50181 IEC Bushing Types

Ormazabal recommends the use of Euromold connectors for the termination of MV-HV cables as they have been tested in the Ormazabal CGMCOSMOS system cubicles.

CGMCOSMOS is part of the Ormazabal Medium Voltage Switchgear Secondary Distribution range – a fully gas-insulated modular and compact (RMU) system up to 24kV.

3 different types of EN 50181 (IEC) bushing types that are manufactured in epoxy resin and conform to the dielectric and partial tests.

• Plug-in Bushing up to 250 A
• Plug-in Bushing up to 400 A
• Screw-in Bushing up to 630 A

MV-HV bushings are located in the cable compartment or can also be placed on the side of the cubicles for direct supply to the main busbar via plug-in or screw-in connectors rated current greater than 400A or short-circuit current equal to or higher than 16kA.

250A plug-in cable connectors (straight or elbow type for rear exit of cable) in outputs to transformer (cable compartment) for fuse protection functions and shielded connectors for circuit-breaker protection functions.

Cross Section of Euromold Cable Connector

Euromold Connectors 250A Bushing

Interface A

Euromold Connectors 400A/630A Bushing

Interface C

Euromold K158LR Connector – Elbow Plug-in Terminal

Euromold K152SR Connector – Straight Plug-in Terminal

Euromold K400TB Connector – Screw-in T-Terminal

Euromold Connector Accessories

 ➡ More Reading:  Euromold 400LR 33kV Connections Into Ormazabal MV Switchgear

➡ View the complete range and specifications of electrical equipment bushings for medium/high voltage switchgear and transformers.

Thorne & Derrick International

11kV 33kV Terminations

T&D are Main UK Distributors for Nexans Power Cable Accessories – this includes heat shrink and cold shrink cable joints and terminations and the Euromold range of screened separable connectors extensively installed to terminate MV-HV power cables.

T&D 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 

Cable Terminations

Thorne & Derrick distribute Nexans Cable Terminations for medium and high voltage electrical cable systems, 11kV/33kV – we provide competitive prices for both heat shrink and cold shrink terminations from extensive stocks to UK and international destinations.

Nexans cable terminations are used for connecting 11kV/33kV power cables into MV-HV electrical equipment including switchgear, transformers and substations – heat shrink terminations are available for both single and 3 core polymeric (XLPE EPR) cables.

➡ Read how Thorne & Derrick are now UK Main Distributors for Nexans Power Accessories.

• 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

More…

T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables.

➡ Visit Power Blog.

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

A series of How-To videos for repairing, jointing and terminating cables using 3M Cold Shrink & Scotchcast products.

Hazardous Area Cable Joints

This video by 3M Electrical shows in what situations you would require a hazardous area joint such as 3M Scotchcast LVI/3 for jointing power cables in Zone 1 and Zone 2 hazardous areas and potentially explosive atmospheres according to the ATEX Directive.

3M LVI-3/x hazardous area resin cable joint kits are designed to be used for multi-core, armoured polymeric insulated, low voltage energy cables.

The 3M video explains how hazardous area cable joints are designed for applications where the cable joints must be flame retardant, halogen free and hydro carbon resistant.

3M have been supplying cable accessories and electrical insulating Scotchast resins for use in hazardous areas for more than 25 years and have carried out extensive research into the effects of hydrocarbons in chemical solvents and resin encapsulants.

3M products have been successfully installed in areas such as mines and quarries, underground applications, petrochemical sites and offshore areas where there is a risk of flame or explosion due to the atmospheric presence of flammable gases.

A specialised joint shell which is flame retardant, hydro carbon resistant and halogen free is filled with a 3M 1402FR resin which has been highly modified by the inclusion of various chemical additives. These additives make the resin flame retardant, halogen free and virtually unaffected by immersion and hydro carbons or chemical solvents.

➡ For further information read: ATEX Cable Joints – Jointing Cables In Hazardous Areas Zone 1 & Zone 2

Cold Shrink – invented by 3M over 40 years ago and now the preferred technology for heat-free jointing, terminating, sealing and abandonment of LV HV cables

We hope you find this video informative and educational, contact T&D for technical support, quotations and stock availability for 3M Hazardous Area Cable Joints.

Selecting Hazardous Area Cable Joints

3M LVI-3 Scotchcast resin cable joints are tested according to EN50393.

➡ Visit 3M Electrical for further information about joints, terminations, tapes and insulation to seal, repair, splice and connect LV MV HV cables.

Cold Shrink | Joint | Terminate | Seal | Repair | Splice | LV MV HV Cables | 3M

• 3M Electrical Products Stocked By Thorne & Derrick International 

66kV Cable Joints – A Failure Investigation & Conclusions

Euromold | 66kV Joints Connectors Terminations Surge Arresters

Thorne & Derrick are leading specialist distributors of MV HV Joints, Terminations & Connectors for use on 11kV/33kV/66kV cable networks – sadly cable failures are increasingly common on onshore and offshore medium/high voltage cable networks.

A toxic cocktail of unskilled labour which is untrained in both basic cable preparation and tool use is usually the cause – this lethal combination unleashes devastation on clients assets nevermind the incalculable cost of downtime associated with power outages.

This investigation and report explains the causes into why the below 66kV cable joints failed by dissecting the cable joints one by one and recording findings to what could have caused the cable failings.

Severe cable joint failure with cable faulted to destruction – caused by a combination of cable preparation failures and factors.

Comparing dimensions from the screen cut length to the corrugated aluminium cut shows the 66kV cable failure occured at the end of the semicon screen cut.

Failure occurred at the end of the semicon screen cut on the high voltage power cable.

Specialist cable jointing tools to effectively prepare and remove semicon screens on 11kV/33kV and 66kV power cables should always be used by jointers – cable jointers should be trained and competent to install manufacturers products.

Poor heat shrinking technique by the cable jointer with non-uniform wall thickness on this heat shrink insulation tube

Conclusion

The cable joint failure was caused by the poor removal of the semi-conductive and the very bad XLPE insulation preparation. Deep and dirty cuts and burrs can seen in the insulation causing the XLPE insulation to be over stressed and this was what ultimately caused the insulation failure.

All HV cable joints and accessories should only be installed by trained professionals with all the correct accreditation. Any other terminations that have been installed by the above ‘jointer’ should be checked and replaced immediately.

Cold Shrink

3M pioneered the development of Cold Shrink technology for use as a material for the jointing, termination and connection of medium/high voltage cables. Since then cold shrink has been adopted by global utilities as a user-friendly and reliable MV-HV cable accessory range with high performance, stable life cycle and minimal joint or termination failure rates.

Should you require any support with the specification or supply of MV HV joints, terminations or connectors for use on 11kV/33kV/66kV energy networks please do not hesitate to contact us.

Cold Shrink Reliability Low Failure Rates

0.067% Cold Shrink Cable Joints/Splices

0.022% Cold Shrink Cable Terminations

*Data based upon U.S. failure data of U.S. manufactured 3M Cold Shrink Medium & High Voltage Cable Accessories between 2009 and 2012.

Thorne & Derrick

THORNE & DERRICK are national distributors LV, MV & HV Cable Installation, Jointing, Substation Earthing & 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.

Euromold 400LR 33kV Connections Into Ormazabal MV Switchgear

More info: Euromold 400LR Switchgear Connectors

• Application: Medium Voltage Switchgear Primary Distribution
• Primary Switchgear Type: SF6 Gas Insulated 33kV
• Contributor: Matthew Collins (Business Development Manager at Ormazabal)
• Featured Manufacturer: Ormazabal (Spain) 
• Client: Western Power Distribution (WPD) UK DNO
• Sector: Utility  

Ormazabal 33kv Switchgear

Medium Voltage Primary Distribution

Ormazabal CPG.0 range of CPG MV switchgear comprises of a full assembly of modular cubicles up to 24kV / 2500A and 33/36kV / 1250A, GIS (Gas Insulated Switchgear) type, with SF6 insulation, for the configuration of primary distribution electrical networks operating at medium voltages. Types of Ormazabal functional 33kV MV switchgear:

• MV Circuit Breaker CPG.0-V
• MV Busbar Coupling CPG.0-C
• MV Disconnector CPG.0-S
• MV Fuse Protection CPG.0-F
• MV Busbar Rise CPG.0-RB

Ormazabal 33kV switchgear pictured prior to factory testing – the MV primary switchgear is with a standalone busbar protection panel designed in accordance with WPD engineering specification

The installation of elements that allow to withstand an internal arc in all Medium Voltage compartments, together with an advanced design that provides total resistance against external factors, ensures Ormazabal CPG.0 cubicles are the ideal solution for using in 33kV substations providing a safe and reliable distribution of medium voltage electricity.

33kV Medium Voltage Switchgear

33kV switchgear for use in a wide range of installations:

• Utilities
• Industrial sector
• Primary distribution substations
• Cement industry
• Mining industry
• Mobile substations
• Switching substations
• Textile industry
• Food industry
• Electrical power stations
• Chemical and petrochemical industry
• Substation
• Steel industry
• Automotive industry
• Airports and railways
• Wind farms

WPD Western Power Distribution – A UK DNO

Western Distribution Power

Electricity is distributed UK countrywide via the National Grid at 275kV or 400kV and is transformed to 132kV for regional distribution at substations, known as Grid Supply Points, by the Distribution Network Operator (DNO).

Western Power Distribution is a electricity distribution network operator (DNO) for the Midlands, South West and Wales in the UK.

They deliver electricity to over 7.8 million customers over a 55,500 square kilometres service area. With a network consisting of 220,000km of overhead lines and underground cables, and 185,000 electricity substations.

WPD – UK DNO

MV Switchgear Terminations 33Kv

Should you require any assistance with the selection or specification of MV Joints & Terminations for use with medium voltage switchgear please do not hesitate to contact us.

T&D distribute both Pfisterer inner cone plugs and Nexans Euromold outer cone separable connectors for terminating 33kV cables into SF6 gas insulated MV switchgear.

Nexans Euromold connectors are manufacturer approved for terminating high voltage cables into Ormazabal MB24kV Compact Transformer Substations – Ormazabal MB is an associated type Compact Equipment Assembly to be installed in Prefabricated Transformer Substations or in housings constructed to be Transformer Substations in distribution networks up to 33kV/36kV.

Euromold 400LR interface B

Elbow connector FOR SWITCHGEAR BUSHINGS

For 400A/630A bushings in 11/12kV and 20/24kV switchgear the following Euromold type connectors can be used to terminate medium/high voltage power cables into Ormazabal MB24 equipment.

• 11/12kV Shielded MV HV Connector – Nexans Euromold 400LR
• 24kV Shielded MV HV Connector – Nexans Euromold K-400TB
• 11/12kV Unshielded MV HV Connector – Nexans Euromold 15TS
• 11/12kV Straight MV HV – Nexans Euromold 152SR
• 24kV Straight MV HV Connector – Nexans Euromold K-152SR

Nexans euromold 400LR Key

1.Conductive EPDM Insert 2. Conductive EPDM Jacket 3. Insulating EPDM Layer 4. Type Interface B 400A according to CENELEC EN50180 50181 5. MV HV Conductor Connector 6. Cable Reducer 7. Earthing Lead

Ormazabal MB24 & Euromold 400LR Connectors

Thorne & Derrick Specialist Electrical Distributor

LV ♦ MV ♦ 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, 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, Copper Earth Tapes, 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

More…

T&D’s Power Blog covers: LV MV HV & EHV Transmission & Distribution, Substations, Switchgear, Cable Jointing & Termination, Cable Fault & Repair, Underground Cables

➡ Visit Power Blog