Transformer Oil Quality Testing - Interfacial Tension Measurement with Sigma Transformer Oil

Transformer oil is the lifeblood of electrical power infrastructure — providing insulation, cooling, and protection against electrical discharge. As oil ages and becomes contaminated, its protective properties deteriorate, increasing the risk of equipment failure and costly unplanned outages. Regular oil condition monitoring is therefore a critical part of any asset management program in power generation and distribution.

Interfacial tension is one of the most sensitive indicators of transformer oil quality, revealing the presence of oxidation products, polar contaminants, and other degradation compounds long before they cause operational problems. Measured routinely against established IEC and ASTM standards, IFT provides QC technicians with a clear, actionable signal of oil condition.

This webinar demonstrates how interfacial tension measurement can be integrated quickly and reliably into routine transformer oil testing programs — and introduces the Attension Sigma Transformer Oil tensiometer, purpose-built for this application.