No. 1 capacitor oil is used for high and low voltage phase shifting capacitor, intermediate frequency electric heater, dc pulse capacitor and other power capacitors to improve the power factor of power transmission and transformation system. No. 2 capacitor oil is used for paper capacitors in the telecommunication industry. No. 1 oil and no. 2 oil are not interchangeable or mixed.
The volume resistance coefficient is large, the medium loss is small, the insulation performance, the electrical performance is good.