Full job descriptionAn 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