Testing and Commissioning

• Switchyard and switchboard commissioning
• Transmission system and substation testing and commissioning
• Functional scheme testing (LV and HV)
• GIS equipment testing, commissioning and maintenance
• Primary and secondary injection testing
• Protection relay configuration and firmware updates
• IEC 61850 protocol setup and relay commissioning
• Commissioning-level transformer testing and energisation support
• Recloser and SCADA testing
• Automatic transfer scheme testing
• End-to-end remote secondary injection testing
• Final commissioning support including energisation and QA documentation
• Green/red line validation

Protection, Control and Engineering Studies

• Transformer differential and REF primary injection testing
• Arc flash studies and risk assessments
• Protection discrimination and coordination studies
• Job-specific switching procedures, ITPs and risk assessments
• GOOSE messaging and logic scheme verification
• Alarm, interlock and control circuit functional checks

Transformer Diagnostics and Substation Services

• Insulation resistance and polarisation index (PI) testing
• Ratio, vector group and winding resistance
• Dynamic winding resistance (OLTC-enabled)
• Dielectric loss angle (Tan Delta), SFRA and DIRANA
• Excitation current and leakage reactance testing
• CT, VT and AVR testing
• Transformer oil sampling and electrical diagnostics

HV Cable Jointing, Termination and Testing

• XLPE, PILC, Polymeric, Paper Lead and EPR cable jointing (up to 230 kV)
• Cable terminations from 3.3 kV up to 500 kV
• Re-termination of failed or damaged cables
• VLF, Tan Delta and Partial Discharge cable testing
• Cable sheath and fault location testing
• Time Domain Reflectometry (TDR) diagnostics
• HV termination inspections, condition assessments and repairs

Earthing System Testing and Verification

• Fall-of-potential (FOP) testing and grid integrity verification
• Equipotential rise (EPR), step and touch voltage testing
• Soil resistivity and current distribution assessments
• Lightning protection system inspection and validation
• Compliance audits and incident investigation

Condition Monitoring and Diagnostics

• Online and offline Partial Discharge (PD) testing
• Tan Delta insulation testing
• Thermographic imaging, corona detection and fault location
• HV DAC 300 testing (PD and Tan Delta up to 230 kV)
• SF6 gas leak detection, handling and filling
• HV asset monitoring and condition planning
• Circuit breaker and switchboard inspections (LV and HV)
• LV breaker testing (MTZ, Micrologic and STR)
• Asset fault diagnostics and condition evaluation

Workshop Services and Equipment Calibration

• HV and LV circuit breaker repairs and rebuilds
• Switchboard refurbishment, wiring upgrades and FAT
• GIS and AIS diagnostic testing bench and service bay
• Transformer and switchgear rotables reconditioning
• Calibration of multimeters, test sets and HV PPE.