Site Electrical Testing Engineer in Devon, Humber

This is an exciting opportunity to join a brilliant team to support the continued growth of an established family-owned business in Leeds.

We are seeking an experienced Site Test Engineer to join our great Operations team. This role is primarily site-focused, requiring regular travel across the UK and, where required, overseas.

The Role:

Reporting to the Head of Site Services, you will be responsible for the on-site testing, commissioning and maintenance of transformers and associated equipment. This is a hands-on role combining mechanical, electrical, and testing responsibilities, requiring a high level of technical competence, safety awareness, and the ability to work independently on customer sites.

Key Responsibilities

• Lead and carry out on-site transformer testing and commissioning activities
• Perform mechanical assembly and installation of transformers and associated equipment in line with Transformer testing procedures
• Carry out fault finding, diagnostics, and repair work
• Undertake transformer maintenance activities
• Read and interpret technical drawings and schematics
• Complete all test documentation and reports accurately
• Ensure all work is carried out in line with site RAMS and Health & Safety requirements
• Represent the business professionally when working with customers and stakeholders
• Travel regularly to sites across the UK and overseas as required

Transformer Testing Scope

• Power Transformers
• Insulation Resistance
• HV Withstand Testing
• Transformer Ratio Testing
• SFRA
• Winding Resistance Testing
• HV & LV CT Testing
• Bushing Testing including Tan Delta
• Tapchanger Checks
• Buchholz Relay Alarm and Trip Testing
• OTI and WTI Calibration
• PRD, MOG, Air Bag Relay and Oil Surge Relay functional checks
• Marshalling Box testing
• Cooling system checks including fans
• Rupture Detector Relay testing
• Impact Recorder results review
• Oil sampling including pre- and post-circulation analysis
• Ashridge setup
• Distribution Transformers
• Insulation Resistance testing
• Applied Voltage / HV Withstand testing
• Winding Resistance testing
• Transformer Ratio testing
• Vector Group verification
• HV and LV CT testing
• Marshalling and control wiring checks
• Functional testing of auxiliary equipment including:
• Breathers
• OTI and WTI
• Magnetic Oil Gauge
• Buchholz relay
• Pressure Relief Device
• Pressure and vacuum gauges

Additional Site Responsibilities

• Mechanical Assembly
• Installation of radiators, conservators, and cooling systems
• Mounting HV and LV bushings and tap changers
• Gasketing and sealing to prevent oil leaks
• Installation of marshalling boxes, cable tray, and accessories
• Torque checking of fixings
• Electrical Assembly
• Termination of internal and external wiring
• Installation and wiring of control and protection devices
• Performing functional checks on alarms and trips
• Maintenance and Refurbishment
• Oil draining, filling, and filtration support
• Replacement of gaskets, seals, and breathers
• Inspection and upgrading of transformer accessories
• Oil sampling for analysis
• Site Safety and Compliance
• Setting up safe working areas and barriers
• Following RAMS and site safety rules
• Use of lifting and rigging equipment
• Reporting hazards, near misses, and incidents

Knowledge and Experience

• Proven experience in electrical testing within an engineering environment
• Demonstrable experience in transformer testing and commissioning (essential)
• Experience working in site-based roles and live environments
• Relevant electrical qualifications and strong knowledge of regulations
• Ability to read and interpret electrical drawings and schematics
• Strong understanding of Health and Safety and safe systems of work
• Methodical approach with strong attention to detail
• Good communication skills and ability to work independently on site
• Flexible and willing to travel as required

Salary and Benefits

• Competitive salary (depending on experience)
• 25 days holiday plus bank holidays
• Company profit share scheme (paid quarterly)
• Healthcare cash plan and Employee Assistance Programme
• EV salary sacrifice scheme and EV charging on site in Leeds
• Pension scheme

Job Types: Full-time, Permanent

Experience:

• Working on site fitting distribution and power transformers: 1 year (required)
• Working within an engineering environment: 1 year (required)
• The ability to understand mechanical and schematic drawings: 1 year (required)
• Health & Safety and conducting risk assessments: 1 year (required)