SUSPENDED CAPACITOR VOLTAGE TRANSFORMER

摘要

A suspended capacitor voltage transformer is provided. The voltage transformer comprises a capacitor voltage division measuring unit and a capacitor voltage division power supply unit in parallel connection. The capacitor voltage division measuring unit comprises three capacitors C1, C2, C3 in serial connection, and a micro-power low voltage is output from the leads at both ends of C1 and C3 for the sampling of the equipment at a rear end. The capacitor voltage division power supply unit comprises three capacitors C4, C5, C6 in serial connection, and a high-power low voltage is output from the leads at both ends of C4 and C6 for providing a working power supply to the equipment at the rear end. The voltage transformer is applied to a medium and high voltage electric energy metering instrument in direct connection with 6kV-110kV power equipment, with a rated frequency of 50Hz/60Hz and in suspension above the ground in work. The output of the suspended capacitor voltage transformer is taken as an input of a voltage measurement signal of the instrument and a working power supply of the instrument. The voltage transformer has a light weight and a small size. It is suspended above the ground in work and problems of insulation and voltage resistance don't need to be taken into consideration.