Blog

High Voltage Cable Joints

Images Courtesy of: Ace David – Owner & Founder of David Laag en Middenspannings Montage (David Low & High Voltage Installation), Rotterdam, South Holland, Netherlands.

Pictured: The brand of cable accessories are Cellpack Compax CKM straight-through high voltage joints and Lovink LoviSil M105 (polymeric/paper (1-core) joints. Voltage of the cable is 10kV – the high voltage power cable circuit length is almost 4km of cables (400sqmm). The cable jointers used Intercable tools to carry out the cable preparation of the HV cables prior to jointing.

➡ Cellpack Compax CKM are plug-in type cable joints and are the only cable joints with a metallic connector pre-installed inside of the body of the joint.

High Voltage Joints

Jointers blog

Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.

Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.

15,000+ Subscribers. ➡

Array Cables | High Voltage Cable Termination & Testing for Wind Farms

Cable Terminations for Array Cables | Thorne & Derrick Stockist of 3M ColdShrink | Nexans Euromold | Pfisterer CONNEX up to 66kV

NEWS from HV3 Solutions Limited

by John Harrison | Director

HV3 Solutions have completed the High Voltage Cable Testing on Triton Knoll Windfarm.

All 90 Array Cables have had a full suite of tests including: LRM, TDR, VLF & PD.

The windfarm has the capacity to produce 857MW of sustainable clean energy which will power more than 700,000 homes. We as a company would like to take this opportunity to thank all employees and subcontractors who helped us achieve this huge milestone.

As this year comes to a close, we are gearing ourselves up for a very busy 2021 within the Onshore & Offshore Windfarm sectors.

Electrical High Voltage Cable Testing

& Fault Finding

HV3 are an established company of electrical engineers based in Hampshire, operating throughout the UK. Specialising in the testing/fault finding on HV/LV networks and new connections – company policy is to meet the customer’s needs and is supported by a wealth of experienced and competent staff.

4 vans carry the most up-to-date Cable Fault Location & VLF Testing Equipment available. All operators are fully trained and provide this service to the highest possible standards. Cable Fault Location services are available at short notice on a nationwide basis for the following:

• Cable Fault Location & Pinpointing
• VLF Testing up to 66kV rms
• Sheath Fault Location & Testing
• PD /TD Testing
• OTDR Fiber Testing
• Array Cable Terminations

Contact HV3 High Voltage Solutions

Image: Daniel Whitnall

Further Reading

• Avoiding Subsea Cable Failures Before They Hit The Water

Thorne & Derrick are Specialist Distributors to the UK and international Offshore Wind & Renewable industry to provide safe and reliable

LV HV Electrical Cable & Power Distribution Systems up to 66kV – we are highly customer responsive and absolutely committed to providing a world-class service.

Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.

Key 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 

See how T&D support, supply and service the Renewable Energy industry.

MV HV Cables 11kV 33kV 66kV | Cable Joints, Terminations & Connections

Jointers & Splicers Tents For Irish Rail | Protecting Cables Against Water & Weather Effects

• uploaded by Chris Dodds | Sales & Marketing Manager at Thorne & Derrick

NEWS Thorne & Derrick | LV HV Cable Jointing & Electrical Equipment – following a successful specification and supplier evaluation by the client today we are despatching 22 x Fibre Optic Cable Splicers Tents & Umbrella’s approved for use on Iarnród Éireann (Irish Rail), the operator of the national railway network of Ireland.

PADS Approved | Translucent fibre optic splicing tents with Network Rail approved blue colour skirts suitable for protection against water ingress and weather effects into cables and joints are also available from us.

With 35 years of experience Thorne & Derrick have built our reputation from a proven track record of unquestionable customer service and technical excellence. ➡ See our complete range of Jointers Tents for power and fibre cable jointing and splicing.

Pictured: Sheerspeed Jointing Tent Kit consisting of 180 PZTFOS 1.8m x 1.8m Triangle Tent, 8ft Umbrella, Umbrella Clamp and Carry Bag. The Premium Speed tent range allows natural light into the work area, ideal for jointing and splicing cables in poor weather conditions. Both tent and umbrella are quick and easy to assemble with no loose components, flame retardant and 100% waterproof.

Rail Cable Accessories, Electrification

& Installation Equipment

Thorne & Derrick supply an extensive range of 400V-33kV Rail Cable Accessories & Power Distribution Sytems including feeder pillars to contractors undertaking Low Voltage Power Distribution, HV Electrification & Substations, DC Traction & Networks, OLE and Track Feeder Cable Renewals – a complete range of Network Rail PADS approved track terminations, cable joints, cable repair and connection products up to 25kV, including 3M Cold Shrink, Pfisterer CONNEX and Nexans Euromold products.

Full range of Cable Pulling Equipment & Products to ensure safe and efficient of rail cables in to cable ducts and containment infrastructure including cable troughs.

Cable Cleats | Cable Hangers | Cable Joints | Cable Glands | Cable Lugs | Cable Transits | Arc Flash Clothing

Fire Mitigation For Distribution By G&W Electric

Electric Power Solutions

Achieve Quick Progress With Advanced Technology Solutions

The following Whitepaper by G&W Electric and presented by Thorne & Derrick describes strategies and technologies designed to minimise or even prevent the threat of electric power-induced fires. These solutions are focused on distribution protection equipment that can be quickly applied to high fire risk areas.

Thorne & Derrick are Specialist Distributors of Substation, Electrical Safety, Cable Jointing & Accessories to UK and international utilities and contractors providing electrical power at distribution and transmission voltage levels.

Introduction

In recent years, the electrical power system has increasingly been the source of wildfire ignition. Environmental factors (e.g., climate change, increased temperatures, dry air and land, and high winds) combined with the arcs generated by electric power system equipment significantly increase the risk of wildfire.

To ensure public safety, it is vital to plan, prepare and identify solutions for fire mitigation. Electric utilities implement fire mitigation strategies during high fire risk conditions through preventive maintenance, strategic operational practices, enhanced system protection and system hardening.

Strategic operational practices range from selective relay protection schemes to more extreme, fail-safe measures such as Public Safety Power Shutoff (PSPS) de-energization programs. Selective relay schemes may include reclose blocking, fast fuse curves and more sensitive ground fault protection, while PSPS shuts off power to the high fire risk area and sectionalizes the perimeter of the unaffected area.

Enhanced system protection reduces the likelihood of ignition through technological advancements such as fast fault clearing schemes, downed conductor detection and communications- assisted system automation.

System hardening strategies help create a more robust, fire-resistant grid by upgrading aging infrastructure to mitigate and eliminate ignitions caused by sparks.

This Whitepaper provides a comprehensive review of distribution protection technologies available today for fire mitigation. These solutions are summarized in the Appendix table.

Contents

• Introduction
• Scope of Fire Mitigation Strategies
• Enhanced System Protection
• System Hardening
• Conclusion

G&W Electric

Overview of G&W Cable Accessories

In 1905 G&W introduced the first disconnectable cable terminating device.

Over 100 years later, G&W continues to create technical innovations that have improved performance and reliability. With over 100 years experience, G&W is the name you can trust for quality cable accessories. With sales representation worldwide, G&W has a proven track record for success.

G&W cable accessories are designed to accommodate cables from all manufacturers and can be created to accommodate any customer cable system. The optional mechanical shrink feature offers an easier and faster installation while reducing possible damage during installation. G&W also offers installation supervision and installation training, which can be customized to suit the audience.

G&W offers a variety of transmission cable accessories for extruded dielectric cable systems. Cable terminations are available for outdoor applications to 230kV and include porcelain or composite insulator options and premolded designs. Gas insulated substation designs are available to 230kV.

Transition cable splices and cable joints are available to 138kV and include premolded designs. All cable terminations and cable joints incorporate built-in stress control and dielectric fluid. Dry type designs are also available for maximum ease of installation.

Substation, Electrical Safety, Cable Jointing & Accessories | 11kV 33kV 66kV to 400kV

Switchgear Solutions: Value-Engineered Metal Clad Alternative

Electric Power Solutions

The following Whitepaper by G&W Electric and presented by Thorne & Derrick discusses metal clad gear is a common choice for consultants and usually comes with a large cost for procurement, storage, installation and maintenance.

A metal clad specification typically details a rating of 25kA to 40kA symmetrical fault interrupting and 1,200A to 3,000A continuous current.

Thorne & Derrick are Specialist Distributors of Substation, Electrical Safety, Cable Jointing & Accessories to UK and international utilities and contractors providing electrical power at distribution and transmission voltage levels.

G&W Electric

Overview of G&W Cable Accessories

In 1905 G&W introduced the first disconnectable cable terminating device.

Over 100 years later, G&W continues to create technical innovations that have improved performance and reliability. With over 100 years experience, G&W is the name you can trust for quality cable accessories. With sales representation worldwide, G&W has a proven track record for success.

G&W cable accessories are designed to accommodate cables from all manufacturers and can be created to accommodate any customer cable system. The optional mechanical shrink feature offers an easier and faster installation while reducing possible damage during installation. G&W also offers installation supervision and installation training, which can be customized to suit the audience.

G&W offers a variety of transmission cable accessories for extruded dielectric cable systems. Cable terminations are available for outdoor applications to 230kV and include porcelain or composite insulator options and premolded designs. Gas insulated substation designs are available to 230kV.

Transition cable splices and cable joints are available to 138kV and include premolded designs. All cable terminations and cable joints incorporate built-in stress control and dielectric fluid. Dry type designs are also available for maximum ease of installation.

Substation, Electrical Safety, Cable Jointing & Accessories | 11kV 33kV 66kV to 400kV