Manager - Testing & Commissioning - PV Inverter Specialist Job Riyadh area,Riyadh Region Saudi Arabia,Engineering

Testing & Commissioning Manager – (PV Inverter Specialist)

This position is responsible for the technical leadership of inverter system commissioning. This position is responsible for the technical leadership of inverter system commissioning in large-scale solar PV power plants across projects, ensuring safe energization, grid-code compliance, reliable operation, and seamless integration with PPC, SCADA, and grid infrastructure. The role acts as the single technical lead for inverter systems during commissioning and early operation.

Core

Responsibilities

Engineering & Pre-Commissioning Phase
Review inverter system drawings, SLDs, protection philosophy, control architecture, and communication diagrams.
To provide inputs to Engineering team based on experience with inverters to take care in engineering stage itself.
components make selection,
Product Performance related challenges
Inverter’s limitations based on site experience
Power quality aspects
Validate compliance with:
Local Country grid codes such as KSA, DEWA, EWEC, CEA, etc.
OEM technical limits
Project-specific control philosophy
Support FAT review of inverter controls
Prepare inverter commissioning method statements, test procedures, and risk
assessments.
Site Commissioning Execution
Lead inverter pre-energization checks (DC, AC, control, auxiliary).
Supervise stepwise energization of Inverter
Sensitivity: L&T Construction Internal Use
Execute first synchronization and power ramp-up.
Coordinate inverter commissioning activities with:
PPC engineer
SCADA team
Protection & relay engineers
Substation / grid utility teams
Ensure inverter configuration aligns with PPC commands
Grid Compliance & Performance Validation
Execute and support:
LVRT / HVRT ride-through tests
Power factor and reactive capability tests
Ramp rate and power gradient tests
Harmonic and power quality assessment
Support grid acceptance tests and audits.
Validate inverter operation under existing grid conditions
Documentation & Handover
Prepare commissioning records, test reports, parameter backup files.
Develop inverter O&M handover documentation and lessons learned.
Support COD and reliability requirements.
Testing, Commissioning & Troubleshooting
Responsible for testing and commissioning of grid-connected PV inverters in compliance
with IEC 62109-1/2, IEC 61727, IEC 62116, IEC 61000 series, UL 1741 & other relevant
standards

Key Commissioning Tests

DC insulation resistance, string polarity verification.
AC insulation, phase rotation, grounding continuity.
Inverter self-tests and protection validation.
Communication stability (Modbus / IEC-104, etc).
Thermal performance under sustained load.

Key Troubleshooting Responsibilities

Sensitivity: L&T Construction Internal Use
Inverter derating under high temperature or grid disturbance
Nuisance trips due to grid voltage/frequency fluctuation
PPC command mismatches
DC arc fault / ground fault events
Transformer / RMU interface issues
Root cause analysis using logs, oscillography, and trend data.

Key Competencies & Skills

Expert knowledge of central and string inverter architectures.
Strong understanding of grid-interactive inverter control modes.
Ability to analyze inverter firmware behavior under dynamic grid events.
Excellent coordination and site leadership skills.
Strong safety mindset for HV and power electronics systems.

Minimum Qualifications

Bachelor’s Degree – Electrical / Power Engineering.
12–15 years of solar inverter commissioning experience.
Direct OEM commissioning exposure preferred.
Grid-code compliance testing experience mandatory.