Robert wrote:I'm not doubting you Bob it is just something I've never come across. Does it ever happen that a 3 phase motor is run in star on full power at 700V ?
Can't say I've seen that many motor plates but I've never seen 700 odd volts on one.
I think there are still some areas in Canada that distribute 3 phase at these sort of voltages - maybe legacy installations but if star delta start were used there, the other voltage marking would have to be 700 x root3.
I've not got any motors here rated at 5hp or more (which is the power threshold when star delta starting is usually needed) so I can't take a photo for you.
Google photos that I've found have not got the resolution to read the plates.