Well done, very simply wired. The only other thing that may be added is interlocking contacts between star and delta contactors. But I find it unnecessary with the timer.
Some larger tonnage chillers have wye delta start. Most are going to VFD’s but prior to VFD technology these were popular. Even if they aren’t new it doesn’t mean people don’t still work on them. Was working on one this morning and watched this to brush up on the transition so I could explain it to my apprentice. Great video
Perfect explanation. Thank you.
Great vid ! 4th Year apprentice (IBEW) currently learning about motors and motor controls
Very cool! Glad it helped!
Well done, very simply wired. The only other thing that may be added is interlocking contacts between star and delta contactors. But I find it unnecessary with the timer.
In some regulatory contexts the interlocking is required. For UL508a applications see 33.5.2 and (for industrial machinery) 66.8.1.
How do I start motor under high torque load and low inrush current?
Good job
Where is this still used? All the videos and comments I find are about teaching this in school while I can't find any real world applications.
fire pumps use these wye-delta starters and 6-wire motors - that's the only place I've seen this in almost 20 years of experience
Air Compressor Motors, for ever. Now you will see added VFD's that remove the need to "soft start". But they are very prevalent still.
@@Dont430 What kind of hp? Are there new installations without VFDs?
Some larger tonnage chillers have wye delta start. Most are going to VFD’s but prior to VFD technology these were popular. Even if they aren’t new it doesn’t mean people don’t still work on them. Was working on one this morning and watched this to brush up on the transition so I could explain it to my apprentice. Great video
Is Wye Delta Starter also applicable to 12 Lead Motor?
Great question, I have no idea. Probably.
yes, it is possible
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