Phases and voltages

[pidja105]

Hello,
how can here voltage between phase and neutral be 230Volts, but between two phases 400V(I think it must be 460V)?

 

[Arouse1973]

For a 3 phase system it's 230 *sqrt(3) = 400 (398.4)
Thanks
Adam

 

[pidja105]

Thank you!