Insulation Resistance (IR)
Evaluate insulation health and moisture ingress across windings and core.
Electrical Infrastructure Services
Power Transformer Maintenance
On-site testing, maintenance, oil filtration, and repair for transformers. Our periodic and corrective programs extend equipment life, minimize downtime, and ensure optimal performance.
- On-site certified engineers
- Periodic & corrective programs
- OEM-grade parts & procedures
Transformer Turns Ratio (TTR)
Verify ratio accuracy and detect shorted turns or open circuits.
Polarization Index (PI)
Timed IR measurements to assess long-term insulation condition.
Winding Resistance
Identify connection issues, turn damage, and contact problems.
No-Load Current
Measure core excitation current to reveal core or flux issues.
Impedance Voltage
Confirm nameplate impedance and detect winding deformation.
Vector Group
Verify phase displacement and connection per OEM/utility standards.
Capacitance & Dissipation Factor (tan δ)
Evaluate dielectric losses and insulation aging trends.
Sweep Frequency Response Analysis (SFRA)
Detect mechanical movement in windings and core structure.
Current Transformer Ratio (CTR)
Validate CT ratios and polarity for accurate protection & metering.
Oil Sampling
Standardized sampling for reliable lab analysis and trending.
Oil Dielectric Strength (BDV)
Measure breakdown voltage to ensure dielectric integrity.
Dissolved Gas Analysis (DGA)
Diagnose thermal/electrical faults via gas fingerprinting.
Furan Analysis
Assess paper insulation degradation (2-FAL) to estimate DP.
Copper Corrosivity
Check for corrosive sulfur and risk to paper/metal interfaces.
Gasket & Bushing Repair
Seal integrity restoration to eliminate leaks and moisture ingress.
Tap Changer Operation & Control
Functional testing, contact inspection, and control circuit checks.
Oil Leak Repair (Pressure Test)
Leak testing by applying ~3.5 kg/cm² nitrogen or dry air.
Repair to Original Spec & Parts
OEM-grade replacement parts and restoration to design spec.
Oil Filtration & Vacuum Dry-Out
On-site processing to reduce moisture and improve dielectric strength.
Periodic & Corrective Maintenance
Planned schedules and rapid response to minimize downtime.
Need urgent testing or diagnostics?
Contact Us
Electrical Infrastructure Services
Power Transformer Maintenance
On-site testing, maintenance, oil filtration, and repair for transformers. Our periodic and corrective programs extend equipment life, minimize downtime, and ensure optimal performance.
- On-site certified engineers
- Periodic & corrective programs
- OEM-grade parts & procedures
Insulation Resistance (IR)
Evaluate insulation health and moisture ingress across windings and core.
Transformer Turns Ratio (TTR)
Verify ratio accuracy and detect shorted turns or open circuits.
Polarization Index (PI)
Timed IR measurements to assess long-term insulation condition.
Winding Resistance
Identify connection issues, turn damage, and contact problems.
No-Load Current
Measure core excitation current to reveal core or flux issues.
Impedance Voltage
Confirm nameplate impedance and detect winding deformation.
Vector Group
Verify phase displacement and connection per OEM/utility standards.
Capacitance & Dissipation Factor (tan δ)
Evaluate dielectric losses and insulation aging trends.
Sweep Frequency Response Analysis (SFRA)
Detect mechanical movement in windings and core structure.
Current Transformer Ratio (CTR)
Validate CT ratios and polarity for accurate protection & metering.
Oil Sampling
Standardized sampling for reliable lab analysis and trending.
Oil Dielectric Strength (BDV)
Measure breakdown voltage to ensure dielectric integrity.
Dissolved Gas Analysis (DGA)
Diagnose thermal/electrical faults via gas fingerprinting.
Furan Analysis
Assess paper insulation degradation (2-FAL) to estimate DP.
Copper Corrosivity
Check for corrosive sulfur and risk to paper/metal interfaces.
Gasket & Bushing Repair
Seal integrity restoration to eliminate leaks and moisture ingress.
Tap Changer Operation & Control
Functional testing, contact inspection, and control circuit checks.
Oil Leak Repair (Pressure Test)
Leak testing by applying ~3.5 kg/cm² nitrogen or dry air.
Repair to Original Spec & Parts
OEM-grade replacement parts and restoration to design spec.
Oil Filtration & Vacuum Dry-Out
On-site processing to reduce moisture and improve dielectric strength.
Periodic & Corrective Maintenance
Planned schedules and rapid response to minimize downtime.
Need urgent testing or diagnostics?
Contact Us