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HV Circuit Breaker Specialist

IOTA Group

OnitshaSenior · Not statedDeadline not published by employerChecked 1 Nov 2026
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About this role

Role overview

Company Description

The client is a leading Energy Company

Job Description

-Purpose

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.

-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 pre-installation 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 as-built records.

-Approved installation, testing and commissioning procedures. -Engineering drawings and technical documentation. -Project specifications and contractual documentation. -installation and commissioning standards

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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

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