YAN Chun-yu1, CHEN Zhi-yong2, GAO Jun2. High-voltage Dielectric Loss Measurement for Current Transformer on Site[J]. High voltageapparatus, 2009, 45(2): 87-89.
YAN Chun-yu1, CHEN Zhi-yong2, GAO Jun2. High-voltage Dielectric Loss Measurement for Current Transformer on Site[J]. High voltageapparatus, 2009, 45(2): 87-89.DOI：
The insulation condition of current transformer can be reflected sensitively by the high-voltage dielectric loss.When the tanδ exceeds standard or other insulation defect is suspected in the preventive test
it is necessary to measure the tanδ under high-voltage
and pay attention to the capacitance variation.The series-compensated method is an effective method to measure high-voltage dielectric loss in field test.Attention should be paid to the influence of the high-voltage leading wire and the electric field interference on the field test.Moreover
comprehensive analysis of measurement results should be conducted.
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