delta-delta instaed of star-delta
delta-delta instaed of star-delta
(OP)
hey guys,
Would connecting a three phase star-delta motor as delta-delta cause a burn out at a later stage? any info would be a great help.
Would connecting a three phase star-delta motor as delta-delta cause a burn out at a later stage? any info would be a great help.





RE: delta-delta instaed of star-delta
In fact star-delta motors are basically designed to start and run in delta. The connections are modified to a star conneccetion during a start, only to reduce starting inrush curret, but at the expense of starting torque and acceleration.
RE: delta-delta instaed of star-delta
yours
RE: delta-delta instaed of star-delta
RE: delta-delta instaed of star-delta
I think you're talking about Part-Winding motor control configuration.
Delta-delta; first half delta-starting, second half delta running.
RE: delta-delta instaed of star-delta
The guy said it is a motor which has a star-delta starter. So there are not two sets of windings. Only six leads are brought out. It is a motor meant for either star-delta or just delta.
RE: delta-delta instaed of star-delta
"three phase star-delta motor" is different to " star-delta starter"
Since, information were insuffecient as posted.. what we got here is usually to have an educated guess.
I'm just having an alternative suggestion.
regards.
RE: delta-delta instaed of star-delta
Had a rewind shop do me the "favor" once. My motor that left with 2300-volt windings came back with 4160-volt windings. The site technicians connected it just like before the rewind, and it wouldn't develop torque.
There was an interesting conversation over that little faux pas.
RE: delta-delta instaed of star-delta
RE: delta-delta instaed of star-delta
Six lead motors with single HP and voltage rating are meant to run in delta and is permitted to be connected in star for starting period only at the expense of starting torque. This assumes the motor is intened to be used near its rated HP.
RE: delta-delta instaed of star-delta
tommy