Sorry I do not really understand. I might not have made the question clear.I assume you mean an AC Induction motor?
The star delta arrangement allows for two different voltages levels to be applied, either for operation on different level supplies, or to start in a Star-Delta fashion where a high load is present and a 'Soft-Start' is required.
I read this and it hasn't really answered my question on why the machine nearly stalled above 0.6Nm with delta connection but not with star connectionHello Hero2222222222. Forgive me if I missed it a 2. Star also known as wye, three phase also known as polyphase. I have attached this link.a very excellent explanation. Please review and I'm sure you will have more questions that we would be more than willing to answer. I did not mean to be so presumptuous I am new here as well.
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-10/three-phase-power-systemhi i hs/
torque controllers help reduce mechanical and electrical stress on motor circuits and systems by limiting voltage at start-up. This avoids the over-torque and over-current conditions that happen when across-the-line circuits are completed, like when a basic motor control contactor closesYour motor is meant to be connected Δ 230 or Y 380. When you connect Δ, you get full applied voltage across each winding. in Y, you get a voltage divider effect across 2 windings at a time. wye-delta starters are a "soft start" or "reduced voltage start" - they start out in wye, giving less voltage across each winding, and then switch to delta.
Yes but there are 3ph motors that are capable of being configured to run in either voltage using star or delta with the same torque.This gentleman beat me to the punch. If I may be so bold to quote.
Thank you. Why does the efficiency decrease when torque increasesYes but there are 3ph motors that are capable of being configured to run in either voltage using star or delta with the same torque.
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