D3100 precision automatic test instrument for dielectric loss of oil is used for liquid dielectric insulating oil dielectric loss and volume resistivity of high precision instruments. Integrated structure. Integrated oil dielectric loss glasses, temperature controller, temperature sensor and dielectric loss measurement bridges, AC power supply, standard capacitors, high resistance Tester, high voltage sources such as major components. Heating element uses the most advanced high-frequency induction heating method, the method of heating with oil Cup with heated non-contact, uniform heating, high speed, easy control and so on.