3-phase transformers: delta and star (19 - Electricity Distribution)

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How do you arrange transformers in a 3-phase setup? Let's look at all the configurations: delta-star, star-delta, star-star, and delta-delta. We can also recognize some configurations by looking at transformers on utility poles.
Full edX course with interspersed practice problems to help you learn:
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Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore.
www.ece.nus.edu.sg/stfpage/el...
Video filmed and edited by Cheryl Lim.
@randomcheryl

Опубликовано:

27 июн 2024

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Комментарии : 32

@ccshello1 6 дней назад

In few materials I have read, the single, thin wire above the 3-phase HV wires is just for lightning protection. It either go directly to the local ground (pole ground), or through a resistor to go to the ground. In those articles, they never said it serves as neutral wire as well.

@tedlahm5740 10 месяцев назад

A lesson for somewhat advanced learners. thank you

@synapticmemoryseepage4447 4 месяца назад

Thanks for this compact explanation of wye/delta configs.

@TheNasnomaz Год назад

very good explanation and graphic presentation. thanks a lot sir

@adanner Год назад

Thank you for subscribing. Keep watching and learning. Please do spread the word so others can learn too.

@prasheen11man95 23 дня назад

At 4:58 , instead of saying phase to phase , saying line to line voltage would make the concept more clear , I guess

@vince6829 27 дней назад

Excellent presentation. Thank you for sharing your knowledge.

@innocentmentor8514 13 дней назад

Thanks a lot and I need more videos

@jensschroder8214 28 дней назад

I have already seen a transformer on the pole in Germany. The 3 HV lines go in at the top and four lines (L1, L2, L3, N) come out at the side. The output is a wye configuration.

@NoNeedtoFeedtheJudge 6 месяцев назад

EE EIT, that was awesome! Thank you!

@Dubble_D Год назад

Thank you :) very good info

@adanner Год назад

Thank you for subscribing.

@petersonmerisma 7 месяцев назад

Good job

@surajshukla5357 6 месяцев назад

Really loved your channel and subbed it today.. I am studying electrical engineering and it is gold

@talashpeygir2621 4 месяца назад

Super

@206flyer3 4 месяца назад

Excellent video, I finally learned the basics behind the power wires in my neighborhood, thank you ! One question I have is why the three phase power lines that run from the substation to the transformers on the poles changed from horizontal array to vertical array and back to horizontal array ? What is the difference and why not horizontal all the way ? Thanks again.

@handle924 9 месяцев назад

How is load balanced across phases for transmission?

@khoabuihuunguyen5466 Год назад

Can you please have a video about tap changer in transformer?. Thank you.

@pedromorgado7222 4 месяца назад

Can you please tell me how to calculate, the fuses in the primary for a transformer 600 volts, 3 phases, 75 KVA? Primary Delta and secondary Why. Thanks.

@Hossein118 Год назад

Interesting that I haven’t seen any pole mounted transformers in Singapore (obviously) and Malaysia! What’s going on?

@RR42636 Год назад

underground to hide from typhoons

@MrSummitville 10 месяцев назад

Or mounted at ground level in water proof transformer vault.

@tedlahm5740 Год назад

Can a three phase three wire DELTA distribution system (no neutral back to the substation) be connected to a SINGLE PHASE one bushing transformer which would CASE GROUNDED to earth at the pole? (meaning no neutral back to the substation)? thank you

@RR42636 Год назад

yes

@tedlahm5740 Год назад

@@RR42636Thank you. Would the NEV (neutral to earth voltage) still be measurable when only multi point grounding at each pole? Again, no parallel neutral back to the substation. Thank you

@MrPutback Год назад

Me watching this video: beautiful explanations - I understand what’s going on here but what does a turban have to do with this?

@oicfas4523 11 месяцев назад

He mentioned turbines, but I think he really means generators (which the turbines will spin and is the part that generates the electricity).

@iamtemo 6 месяцев назад

Serious question. Is it “guy wire” or “guide wire”? @ 17:27

@mjbianks 4 месяца назад

The word guy or stay is interchangeable. Guy wire, stay wire or aerial guy are the terms I have commonly heard but generally you would use the terms guy wire or stay wire when the wire goes from pole to ground and aerial guy/stay when its bracing pole to pole. A stay or guy provide support to the pole/structure. A guide wire is used in other various applications and industries to "guide" objects along the length of the wire. Best look up the definitions of these three words, guy, stay and guide wires.

@BVN-TEXAS 6 дней назад

Excellent explanation but is it just me or is there something about the way he says vOLtage. It’s like he is being shocked with some voltage when he says the o in vOLtage. Like stewy and the way he said cool Whip