Transformer Testing & Maintenance
Doble power factor, turns ratio, insulation resistance, and oil testing for distribution and power transformers — with thermal imaging and load tap changer maintenance included.
Transformer Testing & Maintenance
AK&J Electric provides comprehensive transformer testing and maintenance for distribution and power transformers across utility, industrial, and commercial sites. From routine oil sampling to full Doble power factor diagnostics and load tap changer overhauls, our NETA-certified technicians deliver test data and condition assessments you can act on.
Scope of Work
Doble Power Factor Testing
Insulation power factor and capacitance measurements on windings, bushings, and CTs to detect contamination, moisture, and aging.
Turns Ratio (TTR) Testing
Verify winding ratios across all tap positions to confirm winding integrity and tap changer operation.
Insulation Resistance & PI
Megger and polarization index testing to evaluate winding insulation health.
Oil Analysis
Dielectric breakdown, dissolved gas analysis (DGA), moisture, acidity, and furan testing per IEEE C57.106 and C57.104.
Thermal Imaging Surveys
Infrared scanning of bushings, connections, radiators, and tank surfaces to identify hot spots before failure.
Load Tap Changer Maintenance
Inspection, contact replacement, oil change, timing verification, and operational testing of LTC mechanisms.
What You Receive
- 1NETA-format transformer test report with as-found and as-left data
- 2Doble test results trended against historical baselines
- 3Dissolved gas analysis report with diagnostic interpretation
- 4Thermal imaging survey with annotated images
- 5Condition assessment with prioritized maintenance recommendations
- 6Estimated remaining service life and reinvestment guidance
Ready to spec your next project?
Tell us your equipment, location, and timeline — our engineering team responds within 24 hours.