IOTA GROUP

Transformer Specialist

IOTA GROUP  •  Onitsha, NG (Onsite)  •  2 days ago
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Job Description

Company Description

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.

Job Description

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

Qualifications

  • 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.

Additional Information

Resident position.

Duration: 12 months

Starting date: ASAP

IOTA GROUP

About IOTA GROUP

IOTA Group is a global leader in service delivery, redefining international deployment and local integration with over 40 years of expertise.

Based in Switzerland near Geneva, we operate through a network of subsidiaries, ensuring agility and compliance with both local requirements and global standards.

Our network includes over 100,000 consultants worldwide, offering unparalleled expertise to help clients succeed in cross-border projects.

Committed to excellence, we prioritize integrity and transparency, working as strategic partners to deliver tailored solutions that meet the unique demands of each country. By combining local talent with expatriate expertise, we ensure seamless project execution while adhering to strict ethical and legal standards.

With operations in more than 120 countries, we provide comprehensive services, including talent acquisition, workforce deployment, and local integration, all designed to mitigate risks and ensure compliance.

Our expertise reduces regulatory risks, minimizes disruptions, and guarantees smooth transitions. From payroll compliance and tax management to social security and repatriation, we handle all aspects of employment management with precision.

We also offer end-to-end logistics support, such as travel coordination, accommodation, and administrative processes like visas and work permits.

These services free our clients to focus on their core operations, confident that their workforce management is in expert hands.

With a proven track record across diverse industries, we have become trusted partners to businesses worldwide, transforming challenges into opportunities and fostering long-term success.

At IOTA Group, we don’t just support businesses; we empower them to grow and thrive in an interconnected world.

Industry
Oil, Gas & Mining
Company Size
201-500 employees
Headquarters
Mies, CH
Year Founded
1982
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