Iec 60038 Standard Voltages Pdf Download |work| -

When upgrading a transformer, IEC 60038 tells you the standard off-tap settings. A 11kV incoming supply should be tapped at 10.5kV or 11.5kV depending on load distance—the standard explains why.

Notice the "Highest Voltage for Equipment" is always slightly higher than the nominal. This accounts for regulation and load variation. iec 60038 standard voltages pdf download