Site Electrical Test Engineer

An experienced Site Electrical Test Engineer is required to support on-site testing, commissioning, and maintenance of transformers and associated equipment. This is a site-based role involving regular UK travel and occasional overseas work.

Key Responsibilities

• Lead on-site transformer testing, commissioning, and fault diagnosis
• Carry out planned maintenance, repairs, and performance optimisation
• Ensure full compliance with RAMS, Health & Safety, and site regulations
• Accurately complete test documentation, reports, and certification
• Represent the business professionally on customer sites
• Travel across the UK and internationally as required

Testing & Commissioning

• Perform electrical testing including:
  • Insulation Resistance, HV/Applied Voltage, and HV Withstand
  • Transformer Ratio, Winding Resistance & SFRA
  • HV/LV CT testing and vector group verification
  • Bushing testing (Tan Delta) and tapchanger checks
• Conduct protection and functional testing:
  • Relays (Buchholz, Oil Surge, Rupture Detector)
  • OTI/WTI calibration and auxiliary equipment (PRDs, gauges, breathers)
• Complete system checks:
  • Cooling systems, marshalling boxes, and control wiring
  • Oil sampling/analysis, impact recorder reviews, Ashridge setup

Installation & Assembly

• Carry out mechanical installation of transformers and components:
  • Radiators, conservators, cooling systems
  • Bushings, tap changers, gaskets, seals
• Complete electrical installation work:
  • Wiring, termination, and control/protection systems
  • Marshalling boxes and cable systems
• Perform functional checks on alarms, trips, and protection systems

Maintenance & Refurbishment

• Support oil management (draining, filling, filtration, sampling)
• Replace and upgrade gaskets, seals, and transformer accessories
• Inspect and maintain transformer components to ensure reliability

Site Safety & Operational Excellence

• Establish safe working areas, barriers, and lifting operations
• Operate lifting and rigging equipment safely
• Identify and report hazards, incidents, and near misses
• Interpret technical drawings and schematics to guide work

Beneficial Skills / Experience:

• Proven experience in electrical testing within engineering environments
• Strong background in transformer testing and commissioning
• Experience in site-based/live environments
• Relevant electrical qualifications and regulatory knowledge
• Ability to read and interpret drawings and schematics
• Strong understanding of Health & Safety practices
• Detail-oriented with the ability to work independently
• Flexible with travel requirements

Additional Details:

• Competitive salary (DOE)
• 25 days holiday + bank holidays
• Quarterly profit share scheme
• Healthcare cash plan & Employee Assistance Programme
• EV salary sacrifice scheme
• Pension