PI Power Deals with Precommissioning Tests & Commissioning of
415V to 765kV SS Systems.
Low voltage switchgear, medium voltage switchgear, 400kv GIS,MCC,PMCC,Thermal
Power Plant, process plants, Cement Plants, Railway Substations, industrial
electrification,etc….
Substation Equipment
Current Transformer
Insulation Resistance, Secondary resistance, Ratio accuracy, Knee point voltage (saturation
curve), Burden, Tan Delta & Capacitance, Protection, and metering circuits.
Potential Transformer
Insulation Resistance, Secondary resistance, Ratio accuracy, Burden, Protection and metering
circuits
Capacitive Voltage Transformer
Insulation Resistance, Secondary resistance, Ratio accuracy, Burden, Tan Delta & Capacitance,
Lead resistance, Loop resistance & Protection and Metering circuits
Circuit Breaker
Mechanical - local & Electrical - local/remote control & protection operations, Dynamic contact
resistance, Timing, Tan Delta & Capacitance. Closing & Tripping coil healthiness Auxiliary
contacts operation, Disconnectors & Earth switch Manual - Local & Electrical - local/remote
control operation, Mechanical/Electrical Interlocks. Contact resistance, closing & opening timing
closing & opening coil/motors healthiness
Power Transformers
Insulation resistance, Winding resistance, Turns Ratio, Magnetic balance open circuit current,
Short circuit Impedance, Polarity, SFRA, TenDelta & Capacitance of ail and core, Differential &
REF stability, RTCC.
Lightning Arrester
Leakage Current Measurement (LCM), Insulation resistance, Counter operation.
Isolators
Insulation resistance, contact resistance, Motor healthy, isolator limit adjustments.
Earth pit:
measured pit resistance.
Relay Testing:
Electromechanical Relay
Testing and Commissioning, R&D Of all types Electromechanical of relays
Static relay
Testing and Commissioning, R&D Of all types of Static relays
Numerical relay
Testing and Commissioning, R&D Of all types of Static relays