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Foster-Miller performs minimally invasive inspections of oil-filled power transformers with custom-engineered equipment of its own design. With this service, utilities can diagnose incipient and actual faults in their transformers without undertaking the costly process of draining tens of thousands of gallons of oil and exposing the transformer's interior to damaging air and moisture. Although there are many noninvasive methods for testing transformers, a visual inspection offers the most certain, and often the only, way to evaluate the severity of problems that could result in costly equipment failure.
Our transformer inspection system uses our minimally invasive technology to deliver a broadcast quality video camera and a powerful lighting system to any area inside a suspect transformer. Conventional video inspection systems do not have the lighting necessary to see through service-aged transformer oil, nor are they maneuverable enough to carry themselves over large, unsupported gaps or through difficult, serpentine paths.
Foster-Miller offers the in-oil inspections primarily as a service in the US and Canada in partnership with TJH2b, a well-known analytical laboratory that provides transformer diagnostic expertise to complement our inspection capabilities. We sell the inspection systems to foreign clients for whom the service model is not economically viable. We also sell a "dry"inspection system designed for substation inspection applications.
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