True, one of the motors in my RPC is 400v delta, 700v star. But I don't need a neutral for the machines, all 400v 3-phase, if I ever should the other RPC motor (2.2kw) provides a neutral anyway, being 415 star. They're all "floating" thanks to an isolating transformer (I'm a big fan of safety isolation) but Motor2's star point could be earthed if I needed to?Except that the dummies quote differing voltages, not different formats (star and delta).
There is bound to be someone that comes across a 400V delta wound motor, which will obviously never be converted to delta at 240V.
Aaaaaaand that's why I posted the diagram.True, one of the motors in my RPC is 400v delta, 700v star. But I don't need a neutral for the machines, all 400v 3-phase, if I ever should the other RPC motor (2.2kw) provides a neutral anyway, being 415 star. They're all "floating" thanks to an isolating transformer (I'm a big fan of safety isolation) but Motor2's star point could be earthed if I needed to?
Dave H. (the other one)
Aaaaaaand that's why I posted the diagram.
(Because I didn't understand a fecking word you wrote, Dave![]()
. Pixies, I tell thee
)
Generators have the Star Point (Neutral) linked to Earth. Its to prevent the potential for a floating voltage between N & E, and resultant tripping of Distribution Load Earth Leakage Devices.True, one of the motors in my RPC is 400v delta, 700v star. But I don't need a neutral for the machines, all 400v 3-phase, if I ever should the other RPC motor (2.2kw) provides a neutral anyway, being 415 star. They're all "floating" thanks to an isolating transformer (I'm a big fan of safety isolation) but Motor2's star point could be earthed if I needed to?
Dave H. (the other one)