Pre-commissioning verification of current transformer performance and insulation integrity
Engineering Purpose
To verify that a newly installed or refurbished current transformer meets design specifications, safety requirements, and international standards prior to energization and integration into the power system.
This verification tool coordinates the five required pre-commissioning checks and produces an overall engineering acceptance decision.
Verification Inputs
Enter the measured and reference values for each required check. All fields correspond to the bound small tool input contracts.
1 Current Transformer Insulation Resistance Verification
Verify CT insulation resistance against IEC 61869-2 minimum acceptable thresholds
2 Current Transformer Polarity Verification
Verify CT polarity marking against IEC 61869-2 convention
3 Current Transformer Turns Ratio Assessment
Assess CT turns ratio deviation against accuracy class tolerance
4 Current Transformer Secondary Burden Compliance
Verify CT secondary burden compliance against rated burden
5 Current Transformer Knee-Point Voltage Determination
Determine CT excitation curve knee-point voltage per IEC 61869-2