A procedure to be used to perform a failure analysis is recommended. The procedure is primarily focused on power transformers used on electric utility systems, although it may be used for an investigation into any ac transformer failure. This document provides a methodology by which the most probabl...

This guide provides evaluation methods and application considerations for high voltage (>1000 V) switches, as covered in IEEE Std C37.30.1, under wind loading conditions. This includes testing methods to meet both usual and unusual wind conditions

Metal-clad (MC) medium-voltage switchgear that contains drawout electrically operated circuit breakers is covered. MC switchgear is compartmentalized to isolate components such as instrumentation, main bus, and both incoming and outgoing connections with grounded metal barriers. Rated maximum voltag...

Electrical and mechanical requirements for liquid-immersed distribution and powertransformers, and autotransformers and regulating transformers; single- and polyphase, withvoltages of 601 V or higher in the highest voltage winding, are set forth. This standard is a basisfor the establishment of perf...