The meanings of the characters in the data display area are introduced as follows:

UH(mV): The voltage on the high-voltage side, in mV.

Ab: For three-phase, the line voltage of AB; for inverse Scott, the voltage of αN; for single-phase, the voltage.

Bc: For three-phase, the line voltage of Bc; for inverse Scott, the voltage of βN.

Ca: For three-phase, the line voltage of Ca;

Phase: The phase value on the high-voltage side.

UL(mV): The voltage value on the low-voltage side, in mV.

Ab: For three-phase, the line voltage of ab; for Scott, the voltage of αn; for single-phase, the voltage.

Bc: For three-phase, the line voltage of bc; for Scott, the voltage of βn.

Ca: For three-phase, the line voltage of ca;

Phase: The phase value on the low-voltage side. Note: All phase angle values are relative to the line voltage difference of AB on the high-voltage side.

Pha-LH: For single-phase and three-phase, the phase angle difference of each phase on the low-voltage side relative to the same phase on the high-voltage side; for Scott, the first is the angle of α (0), and the second is the angle of β relative to α. For inverse Scott, the first is the angle of ab (0), and the second and third are the angles of bc and ca relative to ab, respectively.

Ratio: The actual measured transformation ratio. For three-phase, it corresponds to the ratios of AB, BC, CA; for Scott (inverse Scott), it corresponds to the ratios of αN, βN;

Error: The error (%), with the same correspondence as above.

Tap ratio: When the "corresponding tap" is 0, it equals the ratio of high-voltage to low-voltage; when not 0, it is the standard voltage ratio of the calculated tap position.

Tap position: When the "corresponding tap" is 0, it equals the input tap position value; when not 0, it is the calculated tap position value. Figure 10 shows the display interface after the test is completed.