Cable Joints & Terminations HV

G81 ENA Engineering Recommendation – 11kV 33kV 66kV Joints, Terminations & Connectors WPD

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

G81

The following materials framework according to ENA Engineering Recommendation G81 Part 5 “Framework for Materials Specification for Industrial & Commercial Underground Connected Loads Up To & Including 11kV” includes the approved Cable Joints, Terminations & Connectors approved for use with HV Switchgear, HV/LV Transformers & Substations on the Western Power Distribution (WPD) network.

Should you require any technical support or have any commercial requirements about G81 Approved 11kV/33kV Cables & Accessories please do not hesitate to contact Thorne & Derrick Sales Team.

WPD

List Of Approved Materials & Suppliers 11kV 33kV 66kV

Thorne & Derrick International

T&D distribute the most extensive range of MV & HV 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, Sealing Cable Ducts, Cable Transits, Underground Cable Protection, Cable Jointing Tools, Feeder Pillars, Cable Ducting, Copper Earthing, 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.

Read Our Blog: The Next Generation Of 11kV Transformers For MV HV Networks

Switchgear Cable Terminations

T&D distribute MV-HV Switchgear Cable Terminations to suit 11kV/33kV connections into air, oil and gas insulated switchgear or transformers including heat shrink, cold shrink and separable connectors for both inner cone and outer cone bushings from leading manufacturers including Nexans Euromold, 3M and Pfisterer.

♦ See more: Heat Shrink Cable Terminations 11kV 33kV | Cold Shrink Cable Terminations 11kV 33KV

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

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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.

11kV Pot End Live Cable End Seal | 11kV Cables Single Core XLPE CWS

Cable Abandonment | Pot End Cable End Seals | Energised or Dead Cables 11kV

Complete range of cable abandonment kits and live pot end sealing kits for : 11kV HV High Voltage Cables Single Core XLPE CWS.

Kits also available for: 11kV HV High Voltage Cables 3 Core XLPE EPR Cables.

For 600/100V power cable systems see Live Pot End Kits for LV power systems.

➡ Joints | Terminations 11kV 33kV Heat Shrink

11kV

Installation Video: High Voltage Pot End Live Cable End Seals 

11kV Pot End Live Cable End Seal | 11kV Cables 3 Core XLPE EPR

Cable Abandonment | Pot End Cable End Seals | Energised or Dead Cables 11kV

Complete range of cable abandonment kits and live pot end sealing kits for : 11kV HV High Voltage Cables 3 Core XLPE EPR.

Suitable to provide 11kV Pot End Sealing of all types of 3 core polymeric insulated cables XLPE/EPR with copper tape screen and wire braid (PSWB GSWB) or wire armour (SWA).

For 600/100V power cable systems see Live Pot End Kits for LV power systems.

Kits also available for: 11kV HV High Voltage Cables Single Core XLPE CWS (Copper Wire Screened).

➡ Joints | Terminations 11kV 33kV Heat Shrink

11kV

Installation Video: High Voltage Pot End Live Cable End Seals 

Sonel MPU-1 | Leakage Current Alarm Signaller for LV MV HV Networks

Sonel MPU-1

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

Overhead Line Safety Monitoring

Sonel MPU-1 leakage current alarm signaller is designed to be installed to measure AC leakage current in low LV and medium voltage MV power networks.

Repairs, renovation, reconstruction, and modernisation of medium voltage overhead live lines always involves the potential risk and danger of breakdown, accident, arc flash or electric shock to employees who are doing the work.

These risks can be minimised through the use of appropriate personal protective equipment such as insulating mats, electrical insulating gloves, dielectric boots and non-flammable clothing.However all these safety measures will not detect increasing current flowing through the pole grounding, that if too high of a level can be the first warning of danger

Sonel MPU-1

The Sonel MPU-1 is designed to make measurements which can define the medium voltage power network’s safety condition for leakage current.

The device enables a limit to be set for a maximum safe value of flowing leakage current and for values above this limit visual and sound alarm is activated. The preset minimum current level where the loud audible alarm with a warning light signaling is switched is 1 A, in accordance with the PTPiREE guidelines.

♦  PTPiREE Polish Power Transmission and Distribution Association was established on 29 August 1990. PTPiREE is an association of the Distribution Network Operators (Enea Operator, Energa – Operator, PGE Dystrybucja, Tauron Dystrybucja, innogy Stoen Operator and PKP Energetyka) and the Transmission Network Operator (PSE). It works for the transformation of the Polish power industry, aiming to improve the operational efficiency of the LV MV HV power network, as well as the quality of services and customer service. Its operation includes consulting, training and publishing.

Contact us NOW to request FREE DEMO

Using the leakage current alarm signaller it is also possible to manually set a different minimum alarm in the range from 0.5 to 9.9A (with the possibility of an increased alarm range at the time of manufacture for individual needs).

MPU-1 is dust and water proof to IP-67 in accordance with EN 60529 and can operate in temperatures from -10° to +50° C. The device is supplied in a hard carrying case for easy transport also with additional accessories to the workplace and protects against dirt or accidental damage.

Sonel MPU-1

Sonel MPU-1

Features

• Constant monitoring of current flowing on earthing
• Measurement with the use of single clamp or two clamps simultaneously. In the case of using two clamps, current value is summed up, which allows for checking twin pylons (rotational), with independent clamp for each component pylon
• Work mode LED indicator
• Visual and sound alarm (built in speaker) in the case of a higher value of leakage current than the defined limit (factory default set to 1A)
• No DC current measurement
• Measurement with flexible clamps (Rogowski coil) – Sonel F series
• Measurement in 50 Hz or 60 Hz frequency low and medium voltage networks
• Auto ranging
• Battery level monitoring
• Ergonomic handling
• MPU-1 for operation requires F1, F-2 or F-3 clamp (additional accessories)

The leakage current alarm signaller can be connected to measure a power network or device according to the pictures below:

Pic 1 Device Working with Single Clamp	Pic 2 Device Working with Two Clamps	Pic 3 Work in medium voltage mode – alarm limit value and battery level can be seen on the screen	Pic 4 Work in low voltage mode – value of current measured with the clamp and battery level can be seen on the screen	Pic 5 Inputs in MPU-1 Signal

Leakage current measurement with clamp

Sonel MPU-1 Leakage Current Alarm Signaller

Technical Specification

Standard accessories:

• Carrying case L5- Sonel WAWALL5
• Power supply adaptor Z11- Sonel WAZASZ11
• Cable for charger – Sonel WAPRZLAD230
• Mounting strap – Sonel WAPOZOPAKPL

Additional accessories:

• F-1 clamp (ø 38 cm) – Sonel WACEGF1OKR
• F-2 clamp (ø 25 cm) – Sonel WACEGF2OKR
• F-3 clamp (ø 12 cm) – Sonel WACEGF3OKR
• Lead for battery charging from socket of car lighter (12V) – Sonel WAPRZLAD1212V2

Should you require any further information about Sonel MPU-1, The Leakage Current Alarm Signaller, for LV MV HV Networks, please do not hesitate to contact Thorne & Derrick.

Overhead Line Equipment

Thorne & Derrick hold an up to date library of product approvals across the power transmission and distribution sectors including all UK DNO’s drawing on information from the DNO G81 documents, National Grid Asset Codes and Network Rail PADS approvals – we distribute substation and overhead line power grid infrastructure products for 11kV/33kV/66kV/132kV networks. This complemented by the most extensive range of Joints, Terminations & Connectors for the installation of medium/high voltage cable networks into substation switchgear, transformers and overhead lines.

• Transmission, Substation & Distribution Insulators
• Insulators – Tension | Suspension | Post Types 11kV 33kV 132kV
• Trident Package – Conductor Clamps | Insulators | Accessories
• Conductor & Insulator Fittings – Helical Fittings | Wedge Clamps | Suspension Shoes
• 66kV Cable Accessories | Cable Joints | Cable Terminations
• 132kV Cable Accessories | Cable Joints | Cable Terminations
• Portable Earthing Kits, Leads & Equipment
• Arc Flash Clothing & Protection

ENA-TS 12-23 : Cable Tiles & Cable Covers For Use With LV 11kV 33kV & HV Cables

Underground Cable Protection | Covers & Tiles | MV HV

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

ENA-TS 12-23

ENA-TS 12-23

UK DNO’s and electricity utilities have generally adopted Energy Network Association Technical Specification ENA-TS 12-23 to document their technical requirements for cable protection tiles and cable covers used to protect MV HV cables operating at 11kV, 33kV, 66kV and up to 132kV.

Centriforce Tapetile and Stokbord underground cable protection tiles and covers are the market leading, heavy duty utility protection system for protecting underground cable and pipes – this includes low voltage, medium voltage and high voltage power networks working at 11kV and 33kV.

Thorne & Derrick stock and supply the most extensive range of Centriforce Cable Protection products from stock for delivery throughout the UK to most UK DNO specifications and printing preferences in both Tapetile and Stokbord ranges – typically the print legend includes the name of the DNO.

Tapetile cable protection tiles and Stokbord cable covers provide clear visual warning of underground utility services – the cable protection products are made up of a printed warning laminated to the surface of the base material. The products are designed to comply with Energy Network Association Technical Specification (ENA-TS) 12-23, Issue 3 2013.

➡ Watch the following Video to understand the installation procedure for Stokbord cable protection covers:

Cable Covers & Cable Tiles ENA-TS 12-23 | Stokbord & Tapetile

Tapetile Cable Protection Tape

The Tapetile protection tape product is intended primarily to, during excavation work, give a clear visual warning to persons carrying out excavations and other utilities of the presence of underground cables, cable joints or cable ducts.

The Tapetile is manufactured from reconstituted low or medium density polyethylene or a similar material, which is rot-proof and resistant to a wide variety of virgin and tipped soil conditions – the print legend includes a yellow background and black lettering on a red/brown base. Due to the variation in excavated cable trenches the Tile Tape product is available in a range of widths: 150mm, 200mm, 250mm and 600mm.

Stokbord Cable Protection Covers

The Stokbord protection tile product is intended primarily primarily to, during excavation work, give a clear visual warning to persons carrying out excavations and other utilities of the presence of underground cables, cable joints or cable ducts.

Stokbord complies with the impact resistance test requirements to Class 2 as defined in Section 12.2 of ENA-TS 12-23 – to allow interconnection of the cable covers: located 25mm from each end of the cover along its centre line, each cover features a pre-drilled 12mm hole. A suitable peg or cable tie is provided to enable covers to be connected together.

*Typical. Custom sizes available on request

Tapetile & Stokbord

Cable Tiles & Cable Covers

Northern Powergrid	Centriforce	Tapetile	150×2.5mmx40m
Northern Powergrid	Centriforce	Tapetile	150×2.5mmx40m + 200×2.5mmx40m + 250×2.5mmx30m
Northern Powergrid	Centriforce	Stokbord	1000x244x12mm
Scottish Power	Centriforce	Tapetile	200×2.5mmx40m
Scottish Power	Centriforce	Stokbord	1000x244x12mm + 1000x300x12mm
UK Power Networks	Centriforce	Tapetile	200×2.5mmx40m
UK Power Networks	Centriforce	Stokbord	1000x244x9mm
Western Power Distribution (WPD)	Centriforce	Stokbord	1000x450x12mm
Western Power Distribution (WPD)	Centriforce	Stokbord	1000x244x12mm
Electricity North West Ltd (ENWL)	Centriforce	Stokbord	1000x300x12mm
Scottish & Southern Energy (SSE)	Centriforce	Stokbord	1000x244x12mm + 1000x290x12mm
GTC	Centriforce	Tapetile	200×2.5mmx40m
GTC	Centriforce	Tapetile	200×2.5mmx40m
National Grid	Centriforce	Tapetile	200×2.5mmx40m
National Grid	Centriforce	Stokbord	1000x300x14mm
National Grid	Centriforce	Stokbord	1000x450x14mm

Centriforce Benefits

Stokbord and Tapetile heavy duty plastic underground cable covers have virtually replaced concrete cable covers, tiles and plates for several reasons.

• Clearest warning of underground buried cables to third parties
• Can be custom made with sizes to suit specific utility cable protection
• Contains bold warning text and UK DNO logo for clear cable identification
• Damage to cables less likely therefore reducing the cost of repairs, jointing and outages
• Lightweight and easy to install irrespective of weather and soil conditions
• Durable with good impact resistance
• Rotproof and resistant to wide range of soil conditions

➡ Here Stokbord covers are shown providing protection to 132kV high voltage power cables in an underground cable trench.

Image: Prysmian

Electrical Explosion – 11kV Cable Strike

Two construction companies have been fined £90,000 after workers were seriously burned, and one scarred for life, after they cut into a live 11kV electrical cable.

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.