Power Transformer Services
Inspection and Testing
Verify Your Transformer is Safe to Operate
The Expanse team utilizes years of experience to perform power transformer inspection and testing services to commission new or existing units, as part of routine maintenance or condition assessments, and for diagnostics purposes or for establishing benchmarks.
Our inspection and testing services help provide data related to measurements for color, dielectric breakdown, dissolved gas analysis, dissolved metals, flash point, furan, inhibitor content, interfacial tension and moisture. Our reporting provides valuable insight into potential issues and advisable solutions to address the problem before an emergency occurs.
Testing that Adheres to ASTM Standards
Expanse’s power transformer inspection and testing services ensure accurate results with all inspections and lab testing procedures that adhere to globally recognized American Society for Testing and Material (ASTM) standards.
Routine Oil Testing to Extend Equipment Life
Routine testing of transformer insulating oils on a regular schedule is an accepted industry practice which helps prolong the life of your transformer. At Expanse, we advise performing general and physical oil testing twice a year, and dissolved gas analysis once a year.
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Capabilities
Power Transformer Inspection and Testing Services
- Electrical Testing
- Oil General Chemistry Testing
- Dissolved Gas Analysis (DGA)
- Furfural Analysis
- Particle Count
- Metals-in-oil analysis
- Degree of polymerization
- Core Insulation Measurements
- TTR (Transformer Turns Ratio)
- Winding Insulation Resistance
- Winding Excitation
- Winding Resistance
- CT (Current Transformer) Ratio, Polarity and Saturation
- Operational Check of Controls
- Calibration of Gauges
- Low Volt Impedance Test (Leakage Reactance)
- Phase Relation
