A transformer testing service evaluates electrical power transformers to verify structural integrity, ensure regulatory compliance, and prevent unexpected failures. Providers perform diagnostic, routine, and commissioning assessments covering core components, electrical windings, and insulating fluids.
Core Testing Procedures
Transformer Turns Ratio (TTR): Verifies correct voltage ratios and spots shorted turns.
Insulation Resistance (IR): Measures dielectric strength of winding insulation using high voltage.
Dissolved Gas Analysis (DGA): Analyzes gas build-up in oil to trace hidden overheating or electrical arcing.
Oil Breakdown Voltage (BDV): Checks insulating oil quality and moisture content.
Sweep Frequency Response Analysis (SFRA): Evaluates mechanical stability of core and windings.
