A wide ratio error voltage transformer and ratio error linearity measurement of the voltage transformer comparator using thereof

摘要

This invention is a voltage transformer (voltage transformer, VT) relates to, and more specifically to a voltage transformer for comparison relates to a system for evaluating the error of the non-linearity measured on the measuring device. To this end, the supply of the same voltage to the primary side of the reference voltage transformer 40 and the measured voltage transformer (50) in parallel, and the two voltage transformers 40 and 50 the voltage transformer secondary side voltage of the comparison measurement device (60 ) according to the measurement device for comparison using, by using the voltage transformer has a non-wide range of error, the secondary side having a fixed number of turns; And a variable means capable of varying the number of turns of the primary winding is provided. Wide range of voltage transformer having a ratio error is produced as to exactly match the theoretical calculated values and measured values of the ratio error by the turns ratio in the range of -3% to + 3%, measured at the voltage transformer for comparison measurement device using this which can be assessed non-linearity of the error value.