The common abbreviations for transformer testing equipment and their corresponding equipment names and purposes are as follows:
TTR (Transformer Turns Ratio Tester)
Purpose: To measure the turns ratio of transformer windings and verify whether the turns ratio meets the design requirements.
IR Tester (Insulation Resistance Tester)
Purpose: To test the insulation resistance between the transformer winding and the grounding part (such as using a megohmmeter).
WRT (Winding Resistance Tester)
Purpose: To measure the DC resistance of transformer windings, check winding integrity or contact issues.
PF Tester (Power Factor Tester)
Purpose: To evaluate the power factor of insulation materials and determine insulation aging or moisture conditions.
FRA/SFRA (Frequency Response Analyzer/Sweep FRA)
Purpose: To detect winding deformation or displacement through frequency response analysis (such as after transportation or short circuit).
TD Tester (Tan Delta Tester)
Purpose: To measure the tangent value of dielectric loss angle and evaluate the efficiency of insulation systems.
DGA (Dissolved Gas Analyzer)
Purpose: Analyze dissolved gases in transformer oil and diagnose internal faults such as arcing and overheating.
PD Tester (Partial Discharge Tester)
Purpose: To detect partial discharge phenomena and prevent insulation degradation.
CT/PT Testers (Current/Potential Transformer Testers)
Purpose: To test the accuracy and performance (such as transformation ratio and polarity) of the matching transformer.
