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Thorne & Derrick’s POWER Blog is regularly updated with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.

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We focus on Product CategoriesDuct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder PillarsCable Joints LV | Joints & Terminations MV HV 

We provide guidance and technical support for the installation of LV, MV & HV Cable Joints, Terminations, Substation & Electrical Equipment from our Key Suppliers including:

3M CMP Ellis Patents
Nexans Euromold Elastimold Pfisterer
Prysmian Alroc CSD
Roxtec CATU Electrical Cembre
Lucy Zodion ABB Emtelle

MV HV Cables 11kV 33kV

With Photo Blog contributions from our social network of utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.

JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR ♦ CABLE ♦ SPLICE ♦ INSULATE


You are currently filtering by: Cable Joints & Terminations HV

SVL’s Sheath Voltage Limiters for Protection of MV HV Cables

Published 29 Apr 2019

SVL’s Sheath Voltage Limiters for Protection of MV HV Cables

Protecting the Cable Sheath & Jacket from Switching Surge Source: INMR Over the past decade, demand for longer power lines and higher current capacities for HV High Voltage power cables has required new methods of loss prevention. Sheath Voltage Limiters also known as SVL’s provide valuable protection to expensive...

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Bunding – Oil Filled Transformers, To Bund or Not to Bund?

Published 25 Apr 2019

Bunding – Oil Filled Transformers, To Bund or Not to Bund?

How Can We Help? Thorne & Derrick can provide design and manufacturing services for Transformer Bunds with optional oil filters, drain valves, filter systems and ancillaries in both mild and galvanised steel (painted or unpainted) – innovative, efficient, safe and cost-effective solution for protection against leakages of insulating liquid to BS...

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Fire Walls & Fire Risk Hazards Of Electrical Equipment – BS EN 61936-1 : 2010

Published 16 Apr 2019

Fire Walls & Fire Risk Hazards Of Electrical Equipment – BS EN 61936-1 : 2010

BS EN 61936-1:2010 Fire Walls The following information and clauses concerning fire walls is extracted from BS EN 61936-1:2010. Power Installations Exceeding 1kV a.c. Common Rules 8.7 Protection Against Fire 8.7.1 General Relevant national, provincial and local fire protection regulations shall be taken into account in the design of the installation....

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ALVIN by EA Technology | Identify LV Electrical Equipment Faults

Published 15 Apr 2019

ALVIN by EA Technology | Identify LV Electrical Equipment Faults

uploaded by - Chris Dodds Thorne & Derrick Sales & Marketing Manager ALVIN by EA Technology The ALVIN (Automatic Low Voltage Intelligent Network) has been developed by EA Technology (EATL) and is supporting customers and saving time and money through speedy fault and location detection. ALVIN Reclose is the...

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33kV v 66kV | A Wind Farm Collection Grid Technical Comparison

Published 29 Mar 2019

33kV v 66kV | A Wind Farm Collection Grid Technical Comparison

With Kind Permission of: Edvard Csanyi (Editor-In-Chief & Electrical Engineer at EEP) Author: Anne Thyssen (DTU Electrical Engineering, Center for Electric Power and Energy (CEE), Technical University of Denmark) 33kV & 66kV Models A generic wind farm with a 33kV collection grid is compared to a wind farm with...

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