This module aids in establishing the base utility transformer values for many of Volts integrated modules.

Knowing that only a certain amount of information is given concerning the utility transformer's characterization, Volts is equipped with a chart format of IEEE Std 141-1986 national standards transformer values to help "fill in" the blanks of unknown values. Although this chart lists all the transformer values, it is important to use any specific values supplied by the utility company. Therefore, Volts will not overwrite any entered values upon posting the chart values to the characterization screen. The chart lists both single and three phase transformer values for:

• Impedance (%Z)
• % Reactance (&X)
• % Resistance (%R)
• Reactance / Resistance Ratio (X/R)