Measurement of dielectric loss in the high-voltage bushing of a transformer
Thread Content
Seeking advice from experts: When measuring the dielectric loss of high-voltage insulating sleeves that are already installed on transformers, is it necessary to use the reverse connection method and test with the transformer windings connected in phase, without removing the sleeves? ? If the high-voltage terminal is measured against the final screen, will the measurement be inaccurate?
Hasn’t anyone done it before? ? ? :'(
Isn’t the dielectric loss test of high-voltage bushings conducted during the handover before the transformer is installed? It is necessary to lift the sleeve, keep it as vertical as possible, and then perform the measurement using the reverse connection method