Manager - Testing & Commissioning - Wind Turbine Specialist

Larsen & Toubro; Riyadh; On-site; SAR 350,000 - 620,000; Full time

Job summary

Larsen & Toubro in Saudi Arabia seeks a Testing & Commissioning Manager (Wind Turbine Specialist) to plan, execute and coordinate WTGs commissioning for utility-scale wind projects. You will ensure electrical, control, and grid interfaces meet OEM, safety and grid-code requirements prior to handover.

The role requires strong leadership, deep WTG knowledge, and collaboration with EPCs, OEMs and grid operators to deliver safe, reliable performance and compliant handover documentation.

Qualifications

• Bachelor's degree in Electrical/Mechanical Engineering is required.
• 12-15 years of wind turbine generator commissioning experience.
• OEM commissioning authorization strongly preferred.
• Certified Engineer status is desirable.

Responsibilities

• Plan, coordinate and assure commissioning of WTGs per standards.
• Lead mechanical, electrical, control and grid-interface commissioning.
• Coordinate with EPC, OEM and grid operator for sequencing.
• Validate safety, testing and handover documentation.
• Review FATs, procedures, risk assessments and punch points.
• Provide knowledge transfer and training for O&M teams.

Skills

WTG electrical & control systems

IEC 61400 series knowledge

Event log analysis

OEM coordination

Safety awareness

Education

Bachelor's degree in Electrical/Mechanical Engineering

Certified Engineer

Job description

• Testing, Commissioning & Troubleshooting
• per IEC 61400-1, IEC 61400-21-1, IEC 61400-25, IEC 61400-27-1, IEC 60204-1, UL 6141

Testing & Commissioning Manager - (Wind Turbine Specialist)

Position Overview

This position is responsible for the planning, execution, coordination, and technical assurance of commissioning activities for Wind Turbine Generators (WTGs) in utility-scale wind power projects. The role ensures that mechanical, electrical, control, protection and grid-interface systems of WTGs are commissioned safely, operate reliably, and fully comply with OEM requirements, statutory regulations, and grid codes prior to handover.

Detailed Core Responsibilities

• Engineering & Pre-Commissioning Planning
• Review and provide inputs to engineering team to take care of engineering itself
• based on experience.
• Grid compliance and WTG controller limits
• Machine specific challenges faced if any
• Participate in FAT review of WTG control and protection systems (where
• applicable).
• Develop WTG commissioning procedures, method statements, and risk assessments.
• Coordinate commissioning sequence planning with EPC, OEM, and grid operator.
• Mechanical & Electrical Commissioning Coordination
• Supervise and verify correct completion of:
• Mechanical erection, torquing, alignment, and lubrication
• Electrical installation - LV, MV, transformers, grounding systems
• Ensure readiness of auxiliary systems:
• Pitch and yaw drives
• Hydraulic and lubrication systems
• Emergency and service power supplies
• Electrical Energization
• Lead pre-energization checks including:
• Insulation resistance tests
• Grounding continuity
• Sensitivity: L&T Construction Internal Use
• Phase sequence and voltage checks
• Coordinate transformer energization and LV/MV energization.
• Execute first grid synchronization and progressive power ramp-up.
• Ensure safety compliance during live tests and rotating machinery operation.
• Control, Protection & Grid Compliance
• Validate WTG controller parameters as per grid code and PPC philosophy.
• Coordinate LVRT / HVRT, frequency ride-through, and reactive capability tests.
• Verify pitch-based power regulation and ramp-rate control.
• Confirm correct response to curtailment, trip, and fault conditions.
• Trial Operation & Handover
• Support trial run, availability tests, and performance acceptance.
• Review SCADA data, alarms, and event logs.
• Close commissioning punch points and support COD documentation.
• Conduct knowledge transfer and basic training for O&M teams.
• Testing, Commissioning & Troubleshooting
• Responsible for commissioning and grid-compliance testing of wind turbine generators as
• per IEC 61400-1, IEC 61400-21-1, IEC 61400-25, IEC 61400-27-1, IEC 60204-1, UL 6141
• and any other relevant standards

Key Commissioning Tests

• Insulation & dielectric testing of generators and transformers
• Protection relay testing (OV/UV, OF/UF, differential, earth fault)
• Functional testing of:
• Pitch, yaw, mechanical brake
• Emergency stops and fail-safe systems
• Power curve and performance checks
• Communication tests with plant SCADA and PPC

Key Troubleshooting Scope

• Grid-related trips (voltage/frequency instability)
• Pitch or yaw control faults
• Excessive vibration or temperature alarms
• Transformer or converter faults
• Communication failures between WTG and PPC

Key Competencies & Skills

• Strong understanding of WTG electrical & control systems.
• Familiarity with IEC 61400 series and grid code requirements.
• Ability to analyze turbine event logs and operational trends.
• Experience coordinating multi-disciplinary OEM teams.
• High safety awareness for rotating equipment and work at height.

Minimum Qualifications

• Bachelor's Degree - Electrical / Mechanical Engineering.
• 12-15 years of WTG commissioning experience.
• OEM commissioning authorization strongly preferred.
• Certified Engineer.