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HV Circuit Breaker Specialist at IOTA Group - Nigeria
IOTA Group - Nigeria
September 29, 2026
Full-time
On-site
Job Description
The aim is to extend and upgrade five existing highvoltage (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.
Scope of Work
The HV Circuit Breaker Specialist (132 kV and 330 kV) shall be moved to one of the Substation sites
Main Goals
Represent 132 kV and 330 kV circuit breaker installation, testing and commissioning activities.
Ensure safe and compliant installation, testing and commissioning of HV circuit breakers.
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 circuit breakers.
Deliverables:
Review installation, testing and commissioning procedures, drawings and vendor documentation.
Supervise preinstallation inspections and verify circuit breaker readiness.
Supervise installation and assembly of 132 kV and 330 kV circuit breakers in accordance with approved drawings and OEM instructions.
Supervise and perform circuit breaker timing, contact resistance and operating mechanism tests using the OMICRON CIBANO 500, CMC 356, CMC 256 plus….; witness insulation and SF6 tests where applicable.
Supervise functional tests, interlocks, alarms and trip/close sequence verification.
Verify protection interfaces, SCADA signals and control system integration.
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 HSE, QA/QC and commissioning procedures.
Support final handover documentation and asbuilt records.
Approved installation, testing and commissioning procedures.
Engineering drawings and technical documentation.
Project specifications and contractual documentation.
Installation and commissioning standards
Qualifications
Requirements for Technical Services:
Minimum 7 years of experience in HV circuit breaker installation, testing and commissioning.
Experience with 132 kV and 330 kV AIS/GIS circuit breakers.
Knowledge of HV circuit breaker mechanisms and applicable testing methods, with proven ability to operate the OMICRON CIBANO 500, CMC 356, CMC 256 plus
Knowledge of IEC standards and OEM procedures; relevant training certificates mandatory.
English mandatory.
Additional Information:
This position is open to ALL nationals.
The aim is to extend and upgrade five existing highvoltage (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.
Scope of Work
The HV Circuit Breaker Specialist (132 kV and 330 kV) shall be moved to one of the Substation sites
Main Goals
Represent 132 kV and 330 kV circuit breaker installation, testing and commissioning activities.
Ensure safe and compliant installation, testing and commissioning of HV circuit breakers.
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 circuit breakers.
Deliverables:
Review installation, testing and commissioning procedures, drawings and vendor documentation.
Supervise preinstallation inspections and verify circuit breaker readiness.
Supervise installation and assembly of 132 kV and 330 kV circuit breakers in accordance with approved drawings and OEM instructions.
Supervise and perform circuit breaker timing, contact resistance and operating mechanism tests using the OMICRON CIBANO 500, CMC 356, CMC 256 plus….; witness insulation and SF6 tests where applicable.
Supervise functional tests, interlocks, alarms and trip/close sequence verification.
Verify protection interfaces, SCADA signals and control system integration.
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 HSE, QA/QC and commissioning procedures.
Support final handover documentation and asbuilt records.
Approved installation, testing and commissioning procedures.
Engineering drawings and technical documentation.
Project specifications and contractual documentation.
Installation and commissioning standards
Qualifications
Requirements for Technical Services:
Minimum 7 years of experience in HV circuit breaker installation, testing and commissioning.
Experience with 132 kV and 330 kV AIS/GIS circuit breakers.
Knowledge of HV circuit breaker mechanisms and applicable testing methods, with proven ability to operate the OMICRON CIBANO 500, CMC 356, CMC 256 plus
Knowledge of IEC standards and OEM procedures; relevant training certificates mandatory.
English mandatory.
Additional Information:
This position is open to ALL nationals.