Before any power system is energized, thorough testing and commissioning are essential to verify equipment health, operational safety, and protection system accuracy. ISTS provides expert diagnostic and field testing services for Low Voltage (LV) and Medium Voltage (MV) networks up to 33kV.
Utilizing advanced, calibrated secondary injection and high-voltage diagnostic equipment, our competent testing engineers perform comprehensive checks to detect hidden insulation flaws, wiring anomalies, and relay tripping inconsistencies—ensuring smooth utility integration and zero start-up failures.
Primary and secondary injection testing for overcurrent, earth fault, differential, and distance protection relays to guarantee precise tripping curves.
Insulation Resistance (IR), Polarization Index (PI), VLF Hipot, and Partial Discharge (PD) analysis for cables, transformers, and switchgear.
Winding resistance, turns ratio (TTR), vector group verification, and Dissolved Gas Analysis (DGA) for dry-type and oil-filled transformers.
Contact resistance measurement (Ductor test), breaker timing tests, vacuum bottle integrity checks, and interlock scheme validation.
Testing and commissioning at ISTS are led by competent engineers registered with Suruhanjaya Tenaga (ST). Every testing procedure strictly adheres to international standards including IEC 60364, IEEE C37, and TNB Electricity Supply Application Guidelines.
We deliver clear, detailed, and audit-ready testing documentation, complete with baseline diagnostic datasets, calibration certificates, and official switching program sign-offs required prior to initial energization.
Secondary injection testing verifies that protection relays, tripping logic, and breaker trip coils respond correctly to simulated fault conditions without energizing the main power circuit, preventing catastrophic equipment damage during actual fault events.
We utilize Very Low Frequency (VLF) Hipot test sets, insulation power factor analyzers, and Time Domain Reflectometers (TDR) to accurately locate fault points and assess cable insulation health before applying main grid voltage.
Yes, we compile a full commissioning binder including all baseline test sheets, single-line diagram (SLD) redlines, safety certificates, and ST competent engineer endorsements needed for facility handover.
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