Transformer Installation & Maintenance

Transformer Installation & Maintenance Services

Transformer Installation & Maintenance – HV provide transformer installation services through individually assessing and planning each project and ensuring the installation is carried out using the highest safety standards. From design, specification, installation, commissioning, through to energisation, HV’s engineering teams deliver transformer installation projects safely through our highly skilled and competent high voltage technicians.


Our high voltage installation teams are highly experienced in installing and commissioning power transformers throughout the UK and internationally for leading transformer manufacturers across the energy sector and industrial private networks.

This experience coupled with our breadth and depth of technical resources makes High Voltage Services an extremely competent and safe transformer installation, commissioning and maintenance engineering contractor.

Design – Supply – Installation – Commissioning – Energisation – Operation & Maintenance

From transformer or substation design, supply and installation, through to managing the integrity of the high voltage electrical system and life cycle, HV have extensive experience in providing cost effective solutions that ensure greater reliability of the electrical supply whilst delivering economies to site.

Maintenance Programmes

We create bespoke maintenance programmes which meet each of our client’s individual operational needs and expectations. We can offer a transformer maintenance solution as a one off service or longer term maintenance contract to suit customer requirements.

Our maintenance programmes are setup and aligned to the manufacturer’s recommendations as well as proven technical methodology and legislative requirements. This includes transformer oil sample laboratory analysis as well as in-depth maintenance schedules.  Each inspection and maintenance schedule is supported by summary report that detail the current transformer conditions and any recommendations or corrective actions.

Operation & Maintenance

Our high voltage maintenance programmes also cover the following:

  • HV / LV Switchgear
  • Transformers
  • Circuit Breakers – Oil. SF6, Vacuum
  • Protection Relays – Electromechanical & Solid State
  • Oil & SF6 Switches and Ring Main Units
  • HV / LV Cable Systems
  • SAP Services
  • Oil Sampling – (DGA) Dissolved Gas Analysis
  • Transformer Oil Changes
  • Protection Testing
  • Battery Tripping Unit Maintenance
  • Tan Delta Cable Testing
  • Partial Discharge Surveys
  • Live On-line Partial Discharge Testing –
  • High Frequency Current Transformers (HFCTs)
  • Cable Fault Location & Repairs
  • Fault Analysis & Management
  • Voltages – 11kV, 33kV, 66kV, 132kV
  • HV Testing up to 68kV – Substation, Transformer, Switchgear, Cables
  • Consultancy & HV Safety
  • Jointing & Cable Installation

High Voltage Services has over 43 years HV electrical experience and our employees and management team have spent many years working on both DNO and private distribution networks, from which they have gained valuable and specialist expertise.  All of our HV electrical employees are trained to DNO training standards. We operate a safe system of work that is similar to the DNO’s and all of our employees are qualified in their respective areas of expertise.

For further information about HV’s High Voltage and other Integrated Electrical Services, please click on one of the links below: