Determination of the loss-angle tangent of the transformer fluid

摘要

A measuring scheme for determination of the loss-angle tangent tg #delta# using automatic bridge balancing ispresented. The measuring limits are tg #delt 6 l0~(-4) - l0~(-1), therange of operation frequencies of the sinusoidal voltage is 0.05-120.0kHz when voltage ranges from 0 to 6000 V. The error ofmeasurements is tg #delt# when a R5026M bridge and the gagethus developed are used.