240/400 motors

[Chee]

Hi all. I have a grinder here that I use to sharpen grass cutting units. The motors have 400/240 volts on the identification plate. What does this mean? My new workshop doesn't have three phase so I'm looking for ways to run single phase. Thanks

 

[awemawson]

Delta connection = 240 three phase and Star connection = 415 v three phase

 

[Chee]

Iv heard that before but I have no clue what it means. Can you give me a rough idea? Thanks

 

[brightspark]

Iv heard that before but I have no clue what it means. Can you give me a rough idea? Thanks

it means u can run dual voltage 3phase motors on a 240v inverter if u havent got a 415v converter

 

[Pete.]

In star pattern, each phase is separated from each of the other two by a pair of windings whereas in Delta each phase is separated from the others by only one.

 

[p0689109]

I think, in laymans terms, it means that the unit can run off either a 240v 3phase supply or a 415v 3 phase supply. To run it off a 240v single phase supply you would need to invest in an inverter to take in the 240v single phase and output the 3 phase the motor requires. Or you could replace the motor with a single phase unit which, I suppose, would be impractical.
Regards, Michael T

 

[ford34/2]

Motor voltages

Manufacturers can build a dual voltage motor into their machine and this will be compatible with voltages in many countries other than the UK with differing 3 phase voltages,

Stan

 

[Chee]

Ok well that's good then I'll get somethin sorted over weekend & get it working again! Thanks