IOTA Group

Transformer Specialist

IOTA Group · Onitsha, AN, Nigeria
Onitsha, AN, Nigeria Contract Posted 2026-09-29
Type
Contract
Experience
7+ yr

The aim is to extend and upgrade five existing high-voltage (HV) electrical substations as a turnkey project. This technical service will be carried out in Nigeria. This location could be changed according to the progress of the work and the project needs.

Main Goals

  • Represent Company Energy for installation, testing and commissioning of 330 MVA, 165 MVA and 60 MVA power transformers.
  • Ensure safe and compliant installation, testing and commissioning of power transformers.
  • Support Ready for Commissioning (RFC) and Energization.
  • Coordinate installation and commissioning interfaces with HV, P&C and Customer teams.
  • Deliver reliable and fully documented commissioned power transformers.

Deliverables:

  • Review transformer installation, testing and commissioning procedures, drawings and vendor documentation.
  • Supervise transformer receipt inspections and verify installation readiness.
  • Supervise transformer positioning and assembly of bushings, radiators, OLTC and accessories, including vacuum filling and oil filtration, in accordance with OEM instructions.
  • Supervise transformers turns ratio, winding resistance, vector group and OLTC tests using the OMICRON TESTRANO 600 or an equivalent from OMICRON.
  • Supervise capacitance/tan delta tests using OMICRON CPC 100 with CP TD1, and SFRA tests using OMICRON FRANEO 800, where required.
  • Verify insulation resistance, oil quality/DGA results, cooling systems, OLTC functions, alarms, protection and SCADA interfaces.
  • Record test results and prepare commissioning reports and checklists.
  • Support SAT, customer inspections and energization activities.
  • Identify defects, manage punch lists and support corrective actions.
  • Ensure compliance with Company’s Energy HSE, QA/QC and commissioning procedures.
  • Support final handover documentation and as-built records.
  • Approved installation, testing and commissioning procedures.
  • Engineering drawings and technical documentation.
  • Project specifications and contractual documentation.
  • Energy installation and commissioning standards
  • Minimum 7 years of experience in power transformer installation, testing and commissioning.
  • Experience with 330 MVA, 165 MVA and 60 MVA power transformers, including oil handling and OLTC.
  • Proven ability to operate OMICRON TESTRANO 600, with knowledge of CPC 100 with CP TD1 and FRANEO 800.
  • Knowledge of IEC 60076 and OEM procedures; relevant OEM training certificates mandatory.
  • English preferred.

The global company develops and delivers solutions for power generation, transmission and energy transition , including gas and steam turbines, grid technologies, transformers, HVDC systems and renewable energy solutions . The company operates worldwide across the energy sector.

Resident position.

Duration: 12 months

Starting date: ASAP

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