HELP 3 phase masonary saw wiring

[Pete999]

Wht would a star delta starter burn the motor out?

A star delta starter will in effect put 380/root3 volts across each winding, on start up, wouldn't it? into delta after a predetermined time the starter would change over and slap 380/400 across each winding.
The only way delta would burn out the motor would be because the mechanical load is to much, thus causing the winding's to overheat and burn out, purely a mechanical problem, that's why 3 phase squirrel cage motors are sometime started via a S/D starter, Star low voltage high torque Delta higher voltage lower torque due to the increased speed on star start up.
I agree Starting and running in Delta would probably burn the winding's out, but this will be due to overheating at a higher torque, nothing to do with the winding getting 230 v or 380 v, perhaps Westward's comment of more Motor knowledge is required is a bit wrong don't you think?

 

[telectrix]

could comment but it'sbrd time and after beer so i wiattill timmirrow.

 

[telectrix]

A star delta starter will in effect put 380/root3 volts across each winding, on start up, wouldn't it? into delta after a predetermined time the starter would change over and slap 380/400 across each winding.
The only way delta would burn out the motor would be because the mechanical load is to much, thus causing the winding's to overheat and burn out, purely a mechanical problem, that's why 3 phase squirrel cage motors are sometime started via a S/D starter, Star low voltage high torque Delta higher voltage lower torque due to the increased speed on star start up.
I agree Starting and running in Delta would probably burn the winding's out, but this will be due to overheating at a higher torque, nothing to do with the winding getting 230 v or 380 v, perhaps Westward's comment of more Motor knowledge is required is a bit wrong don't you think?

pete.you're missing the point.the motor is designed for 230V across each winding.on a 415 3 phase supply that's only in star. delta would put 415 on each winding. can only be delta on a 230V p-p supply.

 

[Pete999]

pete.you're missing the point.the motor is designed for 230V across each winding.on a 415 3 phase supply that's only in star. delta would put 415 on each winding. can only be delta on a 230V p-p supply.

A special Motor then?

 

[Chris1234]

I use 230v 3 phase motors when I’m using a single phase to three phase VFD.

 

[Chris1234]

Some motor glands just slot into the side of the terminal box, rather than go through a hole.