Development of PT Secondary Circuit's Drop Test Instrument Based on dsPIC30F6010 Singlechip

In the comprehensive error of energy metering device, only metering error of voltage drop of TV secondary circuit can be reduced by some technical improvement measures. This paper introduces a portable intellectual instrument used to measure PT secondary drop of voltage transformer based on metering, while relying on dsPIC30F6010 single chip, as well as the form of hardware and procedure of software.