HV Commissioning Engineer
Key Responsibilities
- Support the delivery of HV projects, including testing, commissioning, and maintenance activities
- Provide technical support to regional engineering teams across HV and LV networks
- Carry out general testing of substation apparatus including transformers, circuit breakers, and protection systems
- Test and commission protection relays and associated equipment, including:
- Overcurrent and Earth Fault relays
- Self-powered protective devices and TLFs
- Differential, unit, zone, busbar (Buszone), Duobias and Solkor schemes
- G59 / G99 protection schemes
- Transformer protection (Buchholz, temperature, pressure relief)
- Generator protection and changeover systems
- Undertake fault finding and investigation on a variety of HV and LV equipment
- Implement and amend grading studies and protection settings
- Test and commission:
- Transformers (power and distribution)
- Current and Voltage Transformers (CTs/VTs)
- Oil, gas, vacuum and air circuit breakers
- Ring Main Units (RMUs), busbars, HV/LV cables
- Battery tripping units and neutral earthing resistors
- Interpret wiring diagrams, schematics, and technical drawings
- Compile test documentation, write test procedures, and produce detailed engineering and commissioning reports
- Act as Senior Authorised Person (SAP) (training can be provided if not currently authorised)
- Strong understanding of power systems and protection principles
- Proven experience in HV testing, commissioning, and protection schemes
- Good working knowledge of transformer, generator, and circuit breaker design, construction, and operation
- Previous experience operating as an HV SAP , or working towards SAP authorisation
- Experience with switching operations at 11kV and/or 33kV (desirable; training can be provided)
- Comfortable working autonomously and supporting complex HV projects
- Experience working as a BMS Engineer, Designer, or Estimator at an intermediate level
- Able to work with minimal supervision while collaborating closely with project and contracts teams Experience with switching operations at 11kV and/or 33kV (desirable, but training can be provided)
- BTEC Level 3 in Electrical Engineering or equivalent - essential
- HNC in Electrical Engineering or equivalent - desirable but not essential
- AP15 Authorisation (or equivalent) - desirable but not essential
- Competitive salary based on experience
- Structured training and authorisation pathway (including SAP and switching)
- Opportunities to work on a wide variety of HV projects and equipment
- Supportive engineering environment with continued professional development
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