A linearity evaluation equipment of voltage transformer comparison measurement system using precise resistor burden

摘要

The present invention relates to a voltage transformer, and more particularly, the measured voltage applied to the secondary side of the transformer It is by using a precision resistor for the voltage transformer burden compared to the non-error measured by the measuring device and the system for evaluating the linearity of the phase angle error. To this end, the supply of the same high-voltage transformer on the primary side of the reference voltage 40 and the measured voltage transformer (50) in parallel, the standard resistance pressure on the secondary side of the transformer for the measured voltage (50) (Z _b ) ratio measured by comparison with the measurement device compares a voltage transformer 60, the secondary side voltage of 65 to then connect in parallel by changing the values of the two voltage transformers (40, 50) comparing the phase error and the theoretical value calculated for the pressure effect of the angle error of the experimental data and the non-error and the phase error by the method for evaluating each of their linearity.