Testing and Commissioning Engineer

Position: Testing & Commissioning Engineer – 400 kV / 765 kV

Experience: 5–12 Years

Qualification: Diploma,B.E./B.Tech in Electrical Engineering

Job Location: Project Site / Pan India

Industry: Power Transmission & Substation / EPC

Job Responsibilities

• Execute testing, pre-commissioning and commissioning activities for 400 kV / 765 kV substations and transmission projects.
• Perform testing and commissioning of power transformers, reactors, CTs, PTs/CVTs, circuit breakers, isolators, earth switches and busbars .
• Carry out testing of protection and control systems , including distance, differential, overcurrent, earth fault, busbar and transformer protection.
• Conduct relay testing, relay coordination, secondary injection and functional checks using testing kits such as Omicron or equivalent.
• Verify CT/PT polarity, ratio, excitation characteristics, insulation resistance, winding resistance, contact resistance and transformer-related tests .
• Perform breaker timing, SF6 gas-related checks, insulation and contact resistance tests and associated functional testing.
• Test and verify AC/DC systems, battery chargers, DCDB/ACDB, control panels and auxiliary systems .
• Execute testing and commissioning of SAS/SCADA, RTU, bay control units and communication systems , including IEC 61850-based systems.
• Verify interlocking, tripping logic, closing circuits, annunciation, protection schemes and trip circuit supervision .
• Review and interpret SLDs, protection schematics, wiring diagrams, cable schedules, control circuits and approved testing procedures .
• Coordinate with client, consultant, OEMs and project execution teams during testing and commissioning activities.
• Prepare and maintain test reports, commissioning protocols, checklists, punch points and as-built documentation .
• Ensure compliance with applicable CEA, IEC, IEEE and utility/client standards and project specifications.
• Troubleshoot electrical/protection system issues during commissioning and ensure timely resolution.
• Support energization, charging of equipment and successful handover of the substation to the client.
• Ensure compliance with HSE requirements, permit-to-work procedures and site safety standards during testing and commissioning.

Key Technical Skills

• 400 kV / 765 kV GIS/AIS Substation Testing & Commissioning
• Protection & Control Testing
• Transformer & Reactor Testing
• CT/PT/CVT Testing
• Circuit Breaker & Isolator Testing
• Distance, Differential, OC/EF & Busbar Protection
• Relay Testing – Omicron / Megger / Doble
• Secondary Injection Testing
• SAS / SCADA / RTU / IEC 61850
• AC/DC Auxiliary Systems
• Interlocking & Functional Testing
• SLD and Protection Scheme Interpretation
• Troubleshooting & Energization

Preferred Experience

• Experience in 400 kV / 765 kV EHV transmission substations .
• Experience with Power Grid / State Transmission Utility / EPC substation projects will be preferred.
• Hands-on experience in AIS/GIS substations and EHV equipment commissioning .
• Experience working with major OEMs such as ABB/Hitachi Energy, Siemens Energy, GE Grid Solutions, Schneider Electric or equivalent will be an advantage.
• Willingness to work at project sites and travel as required .