Transformers

Sigma Power offers a wide range of maintenance, testing, condition monitoring, oil analysis, and repair services for the transformers.

• Capacitance & Dissipation Factor (C&DF)/Tan Delta/DLA Test
• Transformer Turns Ratio (TTR) Test
• Winding Resistance Test
• Dynamic Resistance Measurement Test
• Tap Changer Analysis
• Vector group identification
• Dirana Test
• Partial Discharge testing (Acoustic based-Online Mode)
• Insulation Resistance (Megger) / Polarization Index (PI)
• Excitation Current Test (Open Circuit Test)
• Leakage Reactance Test (Short Circuit Test)
• Sweep Frequency Response Analysis (SFRA)
• Thermography services
• RFI PD Services
• Leak repairs
• Cooling upgrades
• Dissolved gas analysis
• Furanic compounds in oil
• Water-in-oil analysis
• Degree of polymerization
• Oil quality screens
• Metals-in-oil
• Polychlorinated biphenyls (PCBs)