A voltage transformer temperature rise measurement apparatus

The utility model relates to the technical field of voltage transformer winding temperature rise resistor measurement, and especially relates to a voltage transformer temperature rise measurement apparatus. The voltage transformer temperature rise measurement apparatus comprises a power supply, a change-over switch, a resistance instrument and a calculating apparatus in electric connection with the resistance instrument. The voltage transformer temperature rise measurement apparatus also comprises two measurement terminals. The change-over switch comprises a first switch and a second switch. The calculating apparatus comprises a man-machine conversation panel and a logic processing circuit in electric connection with the man-machine conversation panel. The logic processing circuit is in electric connection with a signal output terminal of the resistance instrument. The man-machine conversation panel comprises a winding selection frame, an initial temperature value input frame, a finishing time temperature value display frame, a temperature rise result output frame and a measurement resistance value input frame. A voltage transformer winding which is electrified to emit heat is switched into a measurement mode of the high precision resistance instrument through the change-over switch; through reading of a plurality of sets of data, a final temperature rise resistance value which is a true value is obtained; and the obtained value is subjected to calculating according to a copper winding formula or an aluminium winding formula to obtain a temperature rise value. The measurement precision is higher and the measurement efficiency is also higher.