Output Voltage

The rated output voltage is the voltage for which the transformer is designed and manufactured. his is established when the transformer is connected to the rated input voltage at the rated frequency and loaded with the rated output current and power factor.

In the case of multi-phase systems, the so-called “chained” voltage between the outer conductors is referred to.

Note:
The no-load output voltage of an unloaded or partially loaded transformer is always higher than the rated output voltage.