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

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