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), the second is the angle of β relative to α. For inverse Scott, the first is the angle of ab (0), 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.