Three single phase lines, separated in phase by 120°, make a 400V 3PH supply. Notice that 230V * √3 = 400V. In the USA there is a little more legacy confusion. The single phase voltage was 120V which made three phase 120V * √3 = 208V. Industrial equipment in the USA can be hard-wired using either 120/208V or 277/480V.
It may generated by a DC to DC converter from a low voltage DC supply in which case the frequency may still not be relevant. 3. A high (radio) frequency oscillator/amplifier to switch the polarity of the field as the particles orbit across the gaps between plates.
Besides, consider frequency requirements as different countries use different frequencies. For instance, machines designed to be used in the US uses 60 Hz, while in the UK, the frequency is 50 Hz, so choose a 240v to 400v step up transformer three phase 20kv that will meet your frequency requirements.. 357 224 535 246 890 352 47 265