Відео

good explanation, thanks!

I have been the industry 40+ years. This is the most comprehensive explanation ever.

On the wye/wye bank you only have two bushings. If there were three bushings on the secondary side would you use x3 and x1, or x3 and x2? I can’t remember what happens with x2 on the wye wye bank.

first, is optimus prime even free?

how did you get 7200 volts to the can ?

What is the make / model / manufacturer info for this transformer?

Will you not change polarity if you swap the high sides?

In a previous video you said that a secondary connection of this type was "delta." I don't see how that is true since you are using a neutral.

This is a great explanation. Coming from a utility that has a majority of wye-wye 3 phase transformers, im trying to apply to a utility that does 2 or 3 pot/can clusters, and mostly 120/240 with the occaisional 208 power leg. This makes it so much easier to understand.

L1 and L2 are phases on the secondary side

Thats because electricians dont work with high voltage

when you install the transformer at the customer's place, does the center tap gets connected to the Grid's neutral (the one that runs along 7200V lines). In other words, is there another wire that connects the center tap and the grid's neutral?

I really like this lesson it is very well done. One thing that maybe should be explained is on a wye secondary we parallel the secondary alley cat bad dog. I know you did that because you only show x1 and x2 my apprentice ask why you only show two bushings and I explained. I still watch your videos from time to time to keep me sharp. Please keep these videos coming you are a great teacher. Thank you so much.

Can you tell us the name of the manufacturer of the transformer in this video?

On a 277/480 overhead TX would the amp rating be the same as you parallel a 120/240 TX.

As a licensed PE this guy knows his stuff but how is he working at ground level without full protection? Is this a training installation?

Thank you for all of your videos they’re super super helpful!!!!!! Please make more for all of us !

Thank you so much for the explanation!!!!!

This is the best damn transformer explanation video i've ever watched period.

Great vid once again. Very simple explanation of difficult concepts. You really know your electrical theory, but also, how to explain it in better terms (I think saying “simple terms” makes it seem like we’re idiots and we aren’t!).

One of the best descriptions of phase angles and connecting xfmrs Ive ever seen

Enjoying your videos. Dumb question: why is this called a “single phase” hook up when there are actually two 120V outputs that are 180° apart ( i.e. 2 phases)?

Hows a single phase considered Delta 🤔 if its grounded

good teacher, you are the best ❤❤

I love watching and learning from your videos. Im not in the field but but i was always extremely interested in your type of work since a very young age. The way you explain how these setups work is extremely easily understood. Hope to see more videos in the future. Thanks !

Great video an explanation. Even a beginner can follow this demonstration! When will you be making more videos? Just came across your channel.

Nice ! It's similar to how I determine windings on a 3Φ motor. I'd never given thought to how a transformer applies.

Pedantic electricians don't like when you refer to L1 and L2 as "phases"

Thanks for this video. Easy to follow refresher course for me. I never worked on utility side of anything, but I understand it. I' m retired Inside Wireman and Millwright of 36 years. Btw, On a former agri property, I'm extra lucky to have 240 hi leg delta serving my house and shop building.

Question, on the board in the shop you had A feeding the power pot and B feeding the lighting pot? Wouldn’t that give you counterclockwise rotation?

explained 🙂

nice and easy😀

Thank you for teaching me high voltage and understanding it better.

I have learned so much from this video , Thank You so much for this amazing knowledge Sir

nice and perfect

What about the voltage of 120/ 208 for a customer? Typically in my area when a customer requests 120 / 240 volt 3 phase service it implies it's a Delta high leg service. Meaning one of the phases is 190 volts to neutral or ground

Your videos are wonderful. Take a bow for a job well done!

Watched everything on your channel. Hoping for more videos soon!

It's a great video but if the hookup has no neutral where is the return path?

Best video on this I've ever seen.

Great video for sure learned something but we’re your case grounds lol

Scared me when you touched the pots while energized

I heard the terms “Lighter” - The transformer carrying the neutral and “Teaser” - The power pot for the first time after watching four or five of your training videos so far, can you elaborate on those terms more? I have worked as an Industrial Electrician at a steel mill which received a direct feeder of 750,000 volts and also an older Aluminum Smelter that had its own Generating Station producing both 15 kV and 138 kV. It was our responsibility to manage the switching and repairs on those systems as well as keeping the production departments of the Smelter up and running. Thank you for making these videos, they are well made and the content is very helpful.

Very informative

Nice, i always thought of the 1.732 for phase to ground. But hear is my question what about a high impedance neutral. 50 ohms is what i remember. Thinking it would be the same of your demo since the secondary is what gets the resistor. Was thinking Kirchsoff law might come into play. Thinking i may have answer my own ?

thank you Sir !

I have really been enjoying your videos and how you really make it easy to understand vectors, polarity and transformer hookups in general. My question to you is on a 21kv circuit, name plate reading 12,000/21,000Y, and you were to parallel 2 transformers together in the secondary and a wye hookup in the primary, would the primary phase on each pot have to be hooked up on the same phase of a 3 phase circuit or could they be on different phases in order to achieve the parallel? Would this cause problems going back towards the sub if they were paralleled in the secondary and the primary being hooked up on 2 different phases? We don't parallel pots anymore because it's more difficult to troubleshoot. However, it was just out of curiosity for me. Thanks for your help.

I'm not a lineman but find this really interesting and subscribed to your channel. My degree is in electrical even though I rarely use it on the farm. You should do the math with the vectors to prove the voltages, it's just simple Trigonometry 😊 Here's the math for the Ø - N voltage calculation ... c² = a² + b² - 2ab⋅Cosθ (Law of Cosines) c = √[(120)² + (240)² - 2(120)(240) ⋅ Cos (60°)] c ≈ 207.85Vac You can type in "Law of Cosines" into Google and it will bring up a calculator where you input sides "a" & "b" along with the angle in degrees making the whole process idiot proof 😉

What type of insulation is the on the wire from the cutout to the transformer Tap H1

i thought these transformers were 200 pounds..?