02-18-2015, 02:06 PM
Hang on a minute...
If one end of each U V and W are tied together, it IS star wound, which is for the higher voltage!
connect U2 to V1, V2 to W1 and W2 to U1, 240V 3-phase to each join, it should run on 220V in delta.
http://www.google.co.uk/url?sa=t&rct=j&q...0519,d.d2s
(sorry about the long link, I won't use shorteners as it's impossile to see where they're taking you, and to what) has a good explanation, inclusing what goes wrong if incorrectly connected - page 14 has a nice table showing a delta-connected motor's starting current on 380v (4440 Amps!) and a star-connected motor's full-load output on 240V (down from 185KW to 33KW) - these are in the context of star-delta starting, but apply just as well to dual-voltage motors like the Brook-Crompton, which is a British-made motor originally designed for duall voltage use.
British / European motors are NOT american motors, which all seem to be 9-wire for dual voltage, I've no idea why...
Except my lathe's motor, of course, which IS 9-wire, but for three different speeds
Hope that helps.
If one end of each U V and W are tied together, it IS star wound, which is for the higher voltage!
connect U2 to V1, V2 to W1 and W2 to U1, 240V 3-phase to each join, it should run on 220V in delta.
http://www.google.co.uk/url?sa=t&rct=j&q...0519,d.d2s
(sorry about the long link, I won't use shorteners as it's impossile to see where they're taking you, and to what) has a good explanation, inclusing what goes wrong if incorrectly connected - page 14 has a nice table showing a delta-connected motor's starting current on 380v (4440 Amps!) and a star-connected motor's full-load output on 240V (down from 185KW to 33KW) - these are in the context of star-delta starting, but apply just as well to dual-voltage motors like the Brook-Crompton, which is a British-made motor originally designed for duall voltage use.
British / European motors are NOT american motors, which all seem to be 9-wire for dual voltage, I've no idea why...
Except my lathe's motor, of course, which IS 9-wire, but for three different speeds
Hope that helps.
Rules are for the obedience of fools, and the guidance of wise men...
(Douglas Bader)
(Douglas Bader)