Manager - Testing & Commissioning - PV Inverter Specialist

L&T Hydrocarbon Engineering; Riyadh; On-site; SAR 180,000 - 280,000; Full time

Job summary

L&T Hydrocarbon Engineering Testing amp Commissioning Manager PV Inverter Specialist to lead inverter system commissioning for large-scale solar PV plants, ensuring safe energization and grid-code compliance with PPC SCADA and grid integration.

The role serves as the single technical lead during commissioning and early operation, coordinating with PPC, SCADA, protection and relay teams and utility interfaces to ensure reliable integration.

Qualifications

• Bachelor's degree in Electrical or Power Engineering.
• 12–15 years of solar inverter commissioning experience.
• Direct OEM commissioning exposure preferred.
• Grid-code compliance testing experience mandatory.

Responsibilities

• Lead inverter pre-energization checks and synchronization.
• Coordinate inverter commissioning with PPC engineer and SCADA teams.
• Ensure inverter configuration aligns with PPC commands.
• Prepare commissioning records, test reports and handover docs.

Skills

Inverter architectures

Grid-interactive control

Site leadership

HV safety

Education

Bachelor's Degree in Electrical / Power Engineering

Tools

Modbus IEC-104

SCADA

Protection & relays

Job description

Testing amp Commissioning Manager PV Inverter Specialist 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

A Engineering amp 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 aspectsValidate compliance with Local Country grid codes such as KSA DEWA EWEC CEA etc OEM technical limits Project-specific control philosophySupport FAT review of inverter controlsPrepare inverter commissioning method statements test procedures and risk assessments

B Site Commissioning Execution Lead inverter pre-energization checks DC AC control auxiliary Supervise stepwise energization of Inverter Sensitivity L amp T Construction Internal UseExecute first synchronization and power ramp-up Coordinate inverter commissioning activities with PPC engineer SCADA team Protection amp relay engineers Substation grid utility teamsEnsure inverter configuration aligns with PPC commands

C Grid Compliance amp 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 assessmentSupport grid acceptance tests and audits Validate inverter operation under existing grid conditions

D Documentation amp Handover Prepare commissioning records test reports parameter backup files Develop inverter O amp M handover documentation and lessons learned Support COD and reliability requirements

Testing Commissioning amp 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 amp 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

Identify and resolve Sensitivity L amp T Construction Internal UseInverter derating under high temperature or grid disturbanceNuisance trips due to grid voltage frequency fluctuationPPC command mismatchesDC arc fault ground fault eventsTransformer RMU interface issuesRoot cause analysis using logs oscillography and trend data

Key Competencies amp 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 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.