Comprehensive baseline conditioning and degradation analysis for liquid-immersed and dry-type substation power transformers up to 230kV.
- Sweep Frequency Response Analysis (SFRA): Core and winding mechanical displacement detection following fault currents.
- Dielectric Fluid Analysis: ASTM D1816 & ASTM D877 breakdown voltage, Karl Fischer moisture ppm, interfacial tension, and DGA.
- Winding Resistance & Turns Ratio (TTR): Micro-ohm tap-changer contact evaluation and phase ratio verification.
- On-Site Remediation: Vacuum degassing, moisture dehydration, oil filtering, and positive-pressure nitrogen blanket recharging.