01296 434 808 info@indss.co.uk


HVEngineering Services: INDSS Ltd has worked on a wide range of private networks, providing high voltage cabling services, including High Voltage cable jointing & terminating, medium Voltage cable jointing and terminating and Low voltage cabling jointing and terminating ranging from 415V up to and including 33KV.

Our cable jointing team is fully qualified and experienced in many different types of HV cable jointing and terminating services across a variety of market sectors and industries.

They are fully trained to current safety regulations and receive manufacturer product training on a vast range of HV cables and their components.

They are accredited to work with Raychem, Tyco, Pfisterer, REPL, Nexams and 3M to name a few.


hv engineering services

Our jointers use heat shrink or cold applied technology where possible, with the following combination of cable joints or terminations:

  • Straight through joints
  • Breach joints
  • Transition joints
  • Trouser or loop joints
  • Trifurcation joints
  • Trifurcating transition joints
  • Dissimilar sized combination joints
  • Straight forward heat or cold applied terminations.

 HV Cable and LV Cable Testing

Examples of the testing undertaken during commissioning of new installations includes:

  • Insulation Resistance Tests
  • DC Pressure Testing
  • VLF Testing

Our specialist test equipment used to test the new installation or alteration to the existing installation is calibrated to BS EN ISO 10012: 2003 on an annual basis.

Think HV Engineering Services: Think INDSS

Cable Fault Location

INDSS Ltd can offer a service to attend site to investigate suspected cable faults. Fault finding on switchgear will be carried out to eliminate any faults before progressing to testing of the cable.

Our cable fault services include, but are not limited to:

  • Issue of permits required to work/fault find
  • Identification of cable
  • Location of fault within the cable
  • Jointing of cable to facilitate repair
  • Test and commissioning of the cable back into service


HV Engineering Services
HV engineering services
HV Engineering Services

Think HV Engineering Services: Think INDSS

INDSS Ltd are one of the UK’s leading independent substation contractors
specialising in high voltage engineering


Independent Substation Services Ltd

Unit 55 Edison Road,
Rabans Lane,
HP19 8TE.

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01296 434 808