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We are inviting applications from a qualified and highly experienced Electrical Transformer Maintenance and Testing Electrician with mandatory experience in tap changers and protection systems on 1MVA to 20MVA transformers.Minimum Requirements:
Qualified Electrician (Trade Test certified)
Minimum 5 years’ proven experience in transformer maintenance and testing
Demonstrated experience working on 1MVA – 20MVA transformers
MUST have hands-on experience in tap changer maintenance (OLTC and/or OCTC)
MUST have experience in transformer and feeder protection systems
Strong technical knowledge in:
Protection relays (overcurrent, earth fault, differential, Buchholz, REF, WTI/OTI, PRD)
Tap changer inspection, servicing, adjustment, and fault finding
Transformer oil sampling, testing, and purification
Electrical testing (IR, TTR, winding resistance, tan delta, etc.)
Preventative and corrective maintenance
Valid driver’s license (mandatory)
Sound understanding of OHS Act, electrical safety regulations, and applicable standards
Ability to work independently and under pressure
Key Responsibilities:
Perform planned and breakdown maintenance on transformers (1MVA–20MVA)
Conduct tap changer servicing and fault diagnosis
Inspect, test, and verify transformer protection systems and associated relays
Interpret test results and compile technical maintenance reports
Ensure compliance with safety, quality, and company procedures
Assist with transformer installation, commissioning, and repairs
Added Advantage:
MV switching authorization
Protection relay testing and commissioning experience
Experience in municipal, utility, or industrial power environments
First Aid, Working at Heights, and HV safety certification
Employment Type:
Contract
Market-related remuneration, commensurate with experience
Applications: queries@wnaap.co.za (email CV and qualifications)
Closing Date: 28/02/2026
Stellenbosch
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