DEVICE FOR DIAGNOSTICS OF A POWER OIL TRANSFORMER

摘要

A device for diagnostics of a power oil transformer makes it possible to determine residual endurance of windings of power oil transformer in normal mode of operation by load current and the highest temperature of windings and in mode of overload by power of overload, power preceding overload mode, and temperature of environment. Work-out of endurance is realized through different number of pulses at same time intervals depending on intensity of load at power transformer. Besides that the device makes it possible to determine not simultaneous switch of taps of the RPN devices of each phase.