QES
Senior Member
- Location
- California
Can you run a 380-400Y/660-690Y motor with a Wye-Delta Starter?
The system voltage is 400V
The system voltage is 400V
The motors I've dealt with at those voltages were wound for 690V when connected in star and 400V when connected in delta.Can you run a 380-400Y/660-690Y motor with a Wye-Delta Starter?
The system voltage is 400V
The motors I've dealt with at those voltages were wound for 690V when connected in star and 400V when connected in delta.
If that's what you have, then star/delta starting on 400V is a possibility.
Sounds like a 50Hz application?
Your location says California. I take it that the application is elsewhere?Yup.. The good old 5 0
Your location says California. I take it that the application is elsewhere?
The motors I've dealt with like this are connected in delta for 400V operation and in star for 690V operation.I'm assuming that the phase wounding is rated up to 690V but can startup using 400V?
I believe it's one of the two countries in the world that haven't adopted SI as the official system of units........I'm working on a project in Myanmar.
OK. See post #2.Correction on my original post.
the motor is 380-400D/660-690Y not 380-400Y/660-690Y
Yes. But if you intend to start and run the motor at 400V, star-delta starter is of use. But if you start the motor at 690V and run it at 400V, the star-delta starter is of no use.I'm assuming that the phase wounding is rated up to 690V but can startup using 400V?
From the very first post:Yes. But if you intend to start and run the motor at 400V, star-delta starter is of use. But if you start the motor at 690V and run it at 400V, the star-delta starter is of no use.
Didn't you read it?The system voltage is 400V
the phase wounding is rated up to 690V
A motor wound for 690V when connected in star or on a 400V system when connected in delta. Such motors are not uncommon.That is with reference to the OP's mentioning of 690V.
My point is star-delta starter is of no use in reducing starting current when 690V applied on star connection and 400V on delta connection of the motor.A motor wound for 690V when connected in star or on a 400V system when connected in delta. Such motors are not uncommon.
Let the OP say it because it looks rude on your part to do so.don't you see that your comment about starting it on 690V is a complete irrelevance and of no help to the OP?
Not going to happen here - or elsewhere. An irrelevance. Drop it.My point is star-delta starter is of no use in reducing starting current when 690V applied on star connection and 400V on delta connection of the motor.
What about the possibility of fandangling the supply so we can have 400V, 545V, and 690V so we can have three stages of start? You are stifling the whole creative process by dismissing all of the possibilities we might be able to imagine or dream up. Stop being such a fact-restrained fuddy-duddy and let's explore the world of endless possibilities even if it has nothing to do with the OP's situation.Not going to happen here - or elsewhere. An irrelevance. Drop it.
Oh, you mean like an autotransformer starter?What about the possibility of fandangling the supply so we can have 400V, 545V, and 690V so we can have three stages of start?
Nothing being stifled. See above comment.You are stifling the whole creative process by dismissing all of the possibilities we might be able to imagine or dream up. Stop being such a fact-restrained fuddy-duddy and let's explore the world of endless possibilities even if it has nothing to do with the OP's situation.