HV Maintenance Tech

OCU Group; Resolven; On-site; GBP 42,000 - 54,000; Full time

Job summary

OCU Group in South Wales region is seeking an experienced High Voltage Maintenance Technician to join our energy and utilities team. You will inspect, maintain, test and fault-find HV electrical systems across utility, industrial and renewable sites, helping to keep critical infrastructure safe and reliable.

Based from South Wales with UK-wide travel, you will work to electrical safety standards, carry out planned and reactive maintenance up to 132kV, and support commissioning, outages, and

Qualifications

• Proven experience working on high voltage electrical systems and equipment.
• Relevant electrical qualification, such as NVQ Level 3, City & Guilds, HNC/HND or equivalent.
• Practical experience in HV maintenance, testing, commissioning or fault diagnosis.
• Strong understanding of electrical safety rules, safe systems of work and risk control.
• Excellent fault-finding and problem-solving skills.
• Full UK driving licence.
• Ability to work independently and collaboratively as part of a wider team.
• Willingness to travel and work across the UK as required.

Responsibilities

• Carry out planned and reactive maintenance on HV electrical systems and equipment up to 132kV.
• Inspect, test and diagnose faults across switchgear, transformers, protection systems and associated substation equipment.
• Support HV testing, commissioning, outage works and equipment repairs.
• Undertake switching operations where appropriately authorised and in accordance with approved procedures.
• Identify equipment defects, investigate faults and implement effective solutions.
• Complete accurate service reports, test results and maintenance documentation.
• Ensure all work complies with electrical safety rules, company procedures, industry standards and client requirements.
• Coordinate maintenance activities with clients, site teams, engineers and project managers.
• Support emergency call-outs and planned outages when required.

Skills

HV maintenance

Fault diagnosis

Electrical testing

Safety rules

Driving licence

Teamwork

Troubleshooting

Travel willingness

Education

NVQ Level 3

City & Guilds

HNC/HND

Job description

HV Maintenance Tech

Application Deadline: 30 November 2026

Department: OCU Connect

Employment Type: Permanent - Full Time

Location: Neath

Reporting To: Dean Bridle

Description

The Opportunity: OCU is looking for an experienced High Voltage Maintenance Technician to join our growing energy and utilities business. You will be responsible for the inspection, maintenance, testing and fault-finding of HV electrical systems across a range of utility, industrial and renewable energy sites.

Based from our South Wales operations, you will travel to client sites across the UK, helping to maintain the safety, reliability and performance of critical electrical infrastructure.

What You'll Do

• Carry out planned and reactive maintenance on HV electrical systems and equipment up to 132kV.
• Inspect, test and diagnose faults across switchgear, transformers, protection systems and associated substation equipment.
• Support HV testing, commissioning, outage works and equipment repairs.
• Undertake switching operations where appropriately authorised and in accordance with approved procedures.
• Identify equipment defects, investigate faults and implement effective solutions.
• Complete accurate service reports, test results and maintenance documentation.
• Ensure all work complies with electrical safety rules, company procedures, industry standards and client requirements.
• Coordinate maintenance activities with clients, site teams, engineers and project managers.
• Support emergency call-outs and planned outages when required.

What You'll bring

Essential

• Proven experience working on high voltage electrical systems and equipment.
• Relevant electrical qualification, such as NVQ Level 3, City & Guilds, HNC/HND or equivalent.
• Practical experience in HV maintenance, testing, commissioning or fault diagnosis.
• Strong understanding of electrical safety rules, safe systems of work and risk control.
• Excellent fault-finding and problem-solving skills.
• Full UK driving licence.
• Ability to work independently and collaboratively as part of a wider team.
• Willingness to travel and work across the UK as required.

Desirable

• Senior Authorised Person (SAP) or Authorised Person (AP) experience.
• Experience working on National Grid, DNO, renewable energy or industrial sites.
• Knowledge of protection relays and secondary injection testing.
• Relevant safety qualifications, such as IOSH, SMSTS or NEBOSH.
• First Aid at Work qualification.