Power Transformer Testing - Measuring capacitance and power factor or dissipation factor
The condition of the bushings and the overall insulation of power transformers can be investigated by measuring the capacitance and dissipation factor, also known as the tangent delta, or power factor. Aging and decomposition of the insulation, or the ingress of water, increases the losses and thus more energy is turned into heat in the insulation. The level of this dissipation is expressed by the dissipation factor or power factor. The CPC 100 together with the CP TD1 can measure the capacitance and dissipation factor or power factor in laboratories, test fields, and on site.