This was a big help. I was trying to understand an AC aircraft system I’ve got that’s powered by a 3 phase Wye Alternator. All three phases are split off to provide 115 V AC for redundancy to the windshield electrical anti-icing system. I didn’t understand why they went with Wye vs Delta. You cleared that up. Thanks.
You all probably dont give a damn but does anyone know of a trick to log back into an instagram account?? I stupidly forgot the account password. I would appreciate any help you can offer me
Thank you thank sir you're a awesome person, thank you I like your videos & you explain clear so someone like me understands, I just became an electrician by working so it's easy for me to understand you because you simplifie. You should teach to the whole us & electrical would be easy
I learned a lot about Delta and Wye connections in my power course for my electrical engineering technology degree, but I am refreshing myself on some of the concepts. When you use a transformer (delta to wye) to scale the voltage down, does the V_L-L always have to be 208V? I would assume yes just because the single phase line has to be 120V for residential homes and small businesses. But could it be scaled down to be anything other than 208V?
Yes to get 120V L-N from a 3 phase system it needs to be 208V L-L. That said a step down transformer can really be anything but typically commercial scales down to 208V or 480V in North America. Residential is usually split phase from 240V L-L
Ok, can I ask this John? In my facility, power incoming is 3ph 240v. It's an older facility, very old transformers on the pole coming in. When I measure voltage across L1-L3, L1-L2, L2-L3, I get 240V at all times, However, From L1 to neutral, I get 240V. L2 to neutral is 120V, same case with L3 to neutral, still at 120v. Is that a delta configuration or Wye? Thanks
Need help...how does delta work for a transformer...you have all three phase hooked in series....how come this works and does not explode????Please explain???
Excellent question, the line to line voltage is the same regardless of if it's 1 phase or 3 phase. The power is not the same though as you have current flowing over all 3 phases. Note the power formula shown, for 3 phase application it's sqrt 3, for 1 phase application it's sqrt 1.
Not a lot of info provided but assuming typical and you plan to only use one supply at a time you could connect both to an ats assuming both supplies are the same voltage. Output of ats as Delta to transformer.
If they are at anytime in parallel then no because there is a 30 degree shift between delta and wye. Saying that I’m assuming the primary of both sources are the same, both delta or both wye.
Yes, high leg delta's can have a neutral but they're not that common in most areas. The comments are generalized to cover the most common circumstances.
Roy Laird I agree. A center tapped delta used when you have a small amount of line to neutral connections with the bulk using all three phases. And the main difference between delta and wye is the voltage will be higher in a delta than a wye but has a lower current, where a wye has a lower voltage but more current. That is the main difference, but yes most of the time the delta doesn’t have a neutral in agreement with the video but a delta can have a neutral totally agree.
The only time you can get a neutral from a delta is if one of the transformers in the delta has three bushings. The middle bushing is center tapped in that winding. In saying that let’s not confuse concepts. Delta has no neutral, and a wye has a neutral. The only reason why we have or get a neutral in a delta system is because of the third bushing on a transformer.
Finally an easy straight to the point explanation.
This was a big help. I was trying to understand an AC aircraft system I’ve got that’s powered by a 3 phase Wye Alternator. All three phases are split off to provide 115 V AC for redundancy to the windshield electrical anti-icing system. I didn’t understand why they went with Wye vs Delta. You cleared that up. Thanks.
Absolute fantastic video. Helpful to have a little pre understanding before
viewing. Very informative. Thank You.
Thanks, glad you found it helpful
learned all this in third year electrical! doing 4th year now. good review. thanks for the video
thank you! Im just starting 3 phase in my EE class, this was a good visualization for me.
Glad it was helpful
You all probably dont give a damn but does anyone know of a trick to log back into an instagram account??
I stupidly forgot the account password. I would appreciate any help you can offer me
Thank you thank sir you're a awesome person, thank you I like your videos & you explain clear so someone like me understands, I just became an electrician by working so it's easy for me to understand you because you simplifie.
You should teach to the whole us & electrical would be easy
Very well done presentation and explanations. Thank you.
A very good clear message, thank you.
very good and clear lecture. I learn a lot here. TQ
Brilliant video, clearly explained.
That was fantastic. Thank you for the video!
So good, thank you!
wonderfully explained, thank you
Thanks
Thanks, very informative.
I learned a lot about Delta and Wye connections in my power course for my electrical engineering technology degree, but I am refreshing myself on some of the concepts. When you use a transformer (delta to wye) to scale the voltage down, does the V_L-L always have to be 208V? I would assume yes just because the single phase line has to be 120V for residential homes and small businesses. But could it be scaled down to be anything other than 208V?
Yes to get 120V L-N from a 3 phase system it needs to be 208V L-L. That said a step down transformer can really be anything but typically commercial scales down to 208V or 480V in North America. Residential is usually split phase from 240V L-L
Ok, can I ask this John? In my facility, power incoming is 3ph 240v. It's an older facility, very old transformers on the pole coming in. When I measure voltage across L1-L3, L1-L2, L2-L3, I get 240V at all times, However, From L1 to neutral, I get 240V. L2 to neutral is 120V, same case with L3 to neutral, still at 120v. Is that a delta configuration or Wye?
Thanks
Nathan Pinson that is a delta with a neutral
It is a delta but your 240v from L1 to neutral should be around 208v. That’s what we call a Hi leg. Maybe miss read?
Need help...how does delta work for a transformer...you have all three phase hooked in series....how come this works and does not explode????Please explain???
Thank you
So, given 208Y/120 volt.... Would 208volts be the amount generated from two points? What would all three lines (phases) produce, 360 volt?
Excellent question, the line to line voltage is the same regardless of if it's 1 phase or 3 phase. The power is not the same though as you have current flowing over all 3 phases. Note the power formula shown, for 3 phase application it's sqrt 3, for 1 phase application it's sqrt 1.
if we have dual supply. one is delta and the other is wye. is it possible to connect wye and delta source?
Not a lot of info provided but assuming typical and you plan to only use one supply at a time you could connect both to an ats assuming both supplies are the same voltage. Output of ats as Delta to transformer.
If they are at anytime in parallel then no because there is a 30 degree shift between delta and wye. Saying that I’m assuming the primary of both sources are the same, both delta or both wye.
Deltas can absolutely have neutrals. The 120/240 Delta is very common. 2 phases will be 120V to neutral and the high leg will be 208V to neutral.
Delta can have a neutral if it is a 120 Delta secondary. It has a middle tap kind of like a split phase transformer. Yes Delta can have a neutral.
Yes, high leg delta's can have a neutral but they're not that common in most areas. The comments are generalized to cover the most common circumstances.
Good
sinewave???
Good question, you have an oddball. Sounds like you have something similar to a high leg delta. en.wikipedia.org/wiki/High-leg_delta
glad you found it helpful
Square root of pi would be correct rather than 3
Delta can create a neutral
right but not typical.
explain please...
Roy Laird I agree. A center tapped delta used when you have a small amount of line to neutral connections with the bulk using all three phases. And the main difference between delta and wye is the voltage will be higher in a delta than a wye but has a lower current, where a wye has a lower voltage but more current. That is the main difference, but yes most of the time the delta doesn’t have a neutral in agreement with the video but a delta can have a neutral totally agree.
The only time you can get a neutral from a delta is if one of the transformers in the delta has three bushings. The middle bushing is center tapped in that winding. In saying that let’s not confuse concepts. Delta has no neutral, and a wye has a neutral. The only reason why we have or get a neutral in a delta system is because of the third bushing on a transformer.
I love you
You are over complicating this topic way to much.