HV Commissioning & Primary Injection Engineer

Company: Position 1 Recruitment
Apply for the HV Commissioning & Primary Injection Engineer
Location: London
Job Description:

Overview

HV Commissioning Engineer (Primary Injection / TPI) for UK. Full-Time Permanent role with salary competitive, involving travel across the UK and overseas to deliver high voltage solutions.

Responsibilities

  • Carry out HV commissioning and testing activities on systems from 33kV to 400kV.
  • Perform Transformer Primary Injection (TPI), CT primary injection, secondary injection, and protection relay testing.
  • Commission, maintain, and fault-find on HV switchgear, transformers, substations, and protection systems.
  • Complete electrical testing including AC dielectric testing, functional testing, and system diagnostics.
  • Support planned maintenance activities including partial discharge testing, thermal imaging, and condition assessments.
  • Carry out control wiring modifications, retrofit upgrades, and equipment function testing.
  • Work with modern protection systems including IEC 61850, G99, differential, and distance protection schemes.
  • Produce accurate commissioning reports, test records, risk assessments, and method statements.
  • Provide technical support to customers and assist with emergency response requirements.
  • Supervise site activities and coordinate with project teams, contractors, and clients when required.

The Candidate Will Have

  • Proven experience in HV commissioning, testing, or protection engineering.
  • Knowledge of primary injection testing, CT testing, protection relays, and HV switchgear.
  • Experience working on electrical systems from 33kV-400kV.
  • Ability to interpret electrical drawings and complete technical reports.
  • Good understanding of HV safety procedures and working practices.
  • Experience working independently and as part of a field-based engineering team.
  • Willingness to travel throughout the UK and overseas when required.
  • Full UK driving licence.

For more information, please contact Aiste.

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Posted: July 20th, 2026