Description DTJS-6009 is designed to measure the Capacitance and Dissipation Factor ( tg´ ) of dielectric and electric equipments. It can test grounded equipments, ungrounded equipments, and completely-sealed CVT ( Capacitive Voltage Transformer) . The instrument generates testing High-voltage by itself, and the frequency is 45Hz and 55Hz to avoid electromagnetic interference from power frequency, so as to assure the measuring accuracy.