3 Phase: Delta Connected Loads, How to Calculate Line and Phase Voltage & Line and Phase Current

Рет қаралды 63,460

Күн бұрын

In this video we look at the relationships between phase voltage and line voltage and also phase current and line current in a delta connected three phase load. We carry out a practical experiment to identify these values and then explain the maths behind the numbers. Stay tuned to the end for the critical formulae you'll need and some helpful exam tips as well.
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Пікірлер: 151

@sanskaradhikari8827 3 жыл бұрын

Nothing is more impressive than gathering knowledge from person that knows the basics so well . Keep going on!

@JoeRobinsonTraining 3 жыл бұрын

Ah thanks very much, stay tuned for more! 😊

@DJCam87 3 жыл бұрын

This lad needs an MBE for services to the industry...I’m actually not even joking. Excellent video 👍🏿

@JoeRobinsonTraining 3 жыл бұрын

Oh wow, that's really kind of you to say, thanks. I hope the videos are helping. 👍

@identitywithheld1027 2 жыл бұрын

Your ability to simply and concisely explain this is remarkable. You probably receive more gratitude for your free material than the jobs you get paid for. I'm so grateful for this content.

@jimmy316431641 4 жыл бұрын

Been looking for a decent clip to explain this for ages. Finally I have found one!!! Thanks.

@JoeRobinsonTraining 3 жыл бұрын

Ah good stuff, glad it helps!

@craigemmott4976 4 жыл бұрын

Another great simple to understand video. Thanks Joe.

@JoeRobinsonTraining 4 жыл бұрын

My pleasure Craig, thanks for continuing to watch. Stay tuned for more!

@no_short_circuit 4 жыл бұрын

Thanks Joe, clearly explained.

@JoeRobinsonTraining 4 жыл бұрын

My pleasure!

@leepumfrey9900 2 жыл бұрын

This has been really helpful Joe. Thanks for making this much clearer.

@humanature440 2 жыл бұрын

i admire your virtual set up that makes me see the connection obviously, so clear to understand for a beginner, a big thank you from HK😊

@JoeRobinsonTraining 2 жыл бұрын

You're welcome, glad it helped! 😊

@designkida2023 2 жыл бұрын

Thanks a lot, Joe! All the abstract things we were taught have been brought to the lowest of understandable terms in your video series.

@MdShabbirJahan 3 жыл бұрын

Thanks for the practical video. It really clears my confusion about many theories.

@aaweys5909 7 ай бұрын

Thanks for your time and effort. You did an amazing work helping thousands of students around the country today and many many years to came. Big Big THANKS

@nickpierpoint4116 4 жыл бұрын

Your across the load description finally made me get star and delta

@JoeRobinsonTraining 4 жыл бұрын

Great to hear, thanks!

@elijaholubunmialabi6390 2 жыл бұрын

This video is an epitome of simple and clear. Thumbs up for you!

@russellteejaymolina6736 3 жыл бұрын

Hi Joe, can you also show a video for delta connected load that is unbalance, and where the imbalance currents go.

@johnnyeboy33 Жыл бұрын

Thanks Joe, Explained beautifully !! Keep up the great work, need more people like you around !!! 👍

@atomicdmt8763 Жыл бұрын

excellent! love that you show via testing to verify.

@Click85 9 ай бұрын

if it wasnt 11pm I'd actually be clapping when I got to the end. Subscribed. Thanks

@L0STMYMRBLES 9 ай бұрын

Man I wish my motor controls instructor was as good as you at explaining transformer theory. Thank you sir!

@naijawindandsolar Жыл бұрын

Simply awesome. Depicting the circuits on that board the way they appear in diagrams makes it very easy to understand.

@jamalanwar4927 3 жыл бұрын

Undoubtedly, it's a clear explanation about Delta connection.. Thanks 🙏

@JoeRobinsonTraining 3 жыл бұрын

You're welcome! 😊

@rohulamin5353 3 жыл бұрын

Thank you very much for sending the playlist

@JoeRobinsonTraining 3 жыл бұрын

My pleasure, hope it helps. 😊

@stewben1169 4 жыл бұрын

A great video explaining 3 phase delta connected loads. Just shows the old ways are still the best, I was taught the way over 30 years ago in fact Root 3 or 1.732 was drummed into me as a student. I later went on my local polytechnic now a university to get my HND in Electrical & Electronic Eng.

@JoeRobinsonTraining 4 жыл бұрын

Thanks Stewart, I always think its helpful to try and visualise what's going on with electrical science. Stay tuned for more!

@Mick-we4nb Жыл бұрын

Thank you so much, these are so well presented and easy to follow. I hope you know how good you are at teaching.

@cryora 9 ай бұрын

This is a helpful video, because it shows exactly how a delta load is connected in practice and where the driving source is located, not just how to calculate values based on a diagram.

@alexisjohnmontemayor5488 3 жыл бұрын

finally I am enlightened from this. thank you so much,

@JoeRobinsonTraining 3 жыл бұрын

Good to hear, my pleasure.

@goodwin4924 4 жыл бұрын

joe and gaz the teaching superheros once again thankyou joe for this really helpfull content

@GSHElectrical 4 жыл бұрын

Thanks for the support of Joe Robinson Training and GSH Electrical 👍. All the best Gaz

@JoeRobinsonTraining 4 жыл бұрын

Thanks for the kind comment Michael. Stay tuned for more!

@naileldarov1451 23 күн бұрын

Amazing explanation, many thanks for your effort

@kingmvs2857 8 ай бұрын

Thanks man I needed this all of this and ur other video. U a out there helping.❤

@JoeRobinsonTraining 7 ай бұрын

Just doing what I do! Thanks much! 😊

@testkeylog5117 2 жыл бұрын

Nicely done it.

@sarojdesai4930 3 жыл бұрын

very nicely explained

@billylesnussa5087 3 жыл бұрын

Thanks Joe ry helpful material

@JoeRobinsonTraining 3 жыл бұрын

My pleasure, glad it helped! 😊

@leahStl-zp9yu Жыл бұрын

Your videos are very helpful

@mathieu2927 2 жыл бұрын

great video thank you very much !!!

@fgh7832 3 жыл бұрын

Joe, this made perfect sense

@JoeRobinsonTraining 3 жыл бұрын

Good to know, thanks Frank. 👍

@nickross4229 Жыл бұрын

Hi Joe thanks for these videos we are doing ac therory at trade school and these videos are very helpful Nick

@williamhogrider4136 Жыл бұрын

Thanks man, Helped me a lot, great explanation 🍺🍺🍻.

@eliyoo5872 2 жыл бұрын

Thank you so much

@user-je2ud3ze7v 2 ай бұрын

Great lecturer,I have enjoyed your lesson, keep it up sir

@TheEnzoachi Жыл бұрын

Great video

@kabandajamilu9036 3 жыл бұрын

The best teacher

@leovicky7 2 жыл бұрын

Very impressive

@obonetsedikaelo8435 2 жыл бұрын

.. Keep on going sir.. Learning this from Botswana

@lingxiayun6364 3 жыл бұрын

thank you sir, you are such a life saver

@JoeRobinsonTraining 3 жыл бұрын

You're welcome, glad it helped. 😊

@rohulamin5353 3 жыл бұрын

Precious video

@JoeRobinsonTraining 3 жыл бұрын

Thanks.

@jimmy2045 2 жыл бұрын

THANK YOU

@noriahmed9355 Жыл бұрын

Thanks you ♥️

@Ashumi 4 жыл бұрын

Thank you so much 😊

@JoeRobinsonTraining 3 жыл бұрын

My pleasure!

@johnkronos6435 7 ай бұрын

Impressive channel. You are a good example and good role model for young men in these darkening days of social decline and the dumbing down of the modern west. I will continue supporting your content, and recommend your channel to friends at the trade school (I am an electrician-apprentice)

@JoeRobinsonTraining 7 ай бұрын

Why thank you very much! 😃

@desrtrose21000 4 жыл бұрын

excellent. only one word.

@JoeRobinsonTraining 4 жыл бұрын

Thanks very much much. Stay tuned for more!

@lawrencekeriafe6829 3 жыл бұрын

Thanks a Billion 😁

@JoeRobinsonTraining 3 жыл бұрын

You're welcome a trillion. 😊

@jamesward9570 7 ай бұрын

Brilliant

@JoeRobinsonTraining 7 ай бұрын

Wow, thanks for all the comments James! 👍

@stonedsloth6367 2 жыл бұрын

thanks mate

@MDougan98 3 жыл бұрын

Thanks very much for this, very helpful video. Could you advise on how a capacitor bank would be connected across this 3-phase load to implement power factor correction, and how this would affect the values of phase current/voltage? I understand the configuration for single phase supply but am struggling to visualise in a 3-phase delta sense. Many thanks!

@motivationalqts Жыл бұрын

Very good explanation by you sir. Please provide video on calculation of voltage and current in star and delta in deep.

@rapskaujama5178 3 жыл бұрын

Hi Joe, great presentations! Loving it all from Namibia. Could you please do presentation on Balancing of loads for both Star & Delta for THERMOSTATIC LOAD BALANCING PANEL. 😁 I hope this makes sense 😂😸 thanks.

@PunmasterSTP 2 жыл бұрын

Delta connected loads? More like "Definitively connected logic!" Thanks for making such a clear and comprehensible video series.

@JoeRobinsonTraining 2 жыл бұрын

😂 These have been cracking me up, thanks so much for commenting so creatively! 😊

@PunmasterSTP 2 жыл бұрын

@@JoeRobinsonTraining You are most welcome, and I really enjoy making them! Thanks for making this whole series.

@coolnet8224 4 жыл бұрын

great explanation. very useful video. I have subscribed your channel please bring more C&G Level 2 &3 related video.

@JoeRobinsonTraining 3 жыл бұрын

Glad it's helpful, more content on the way!

@xer_t3661 2 жыл бұрын

thank youu

@a_l7515 3 жыл бұрын

you need to teach us again Joe.

@JoeRobinsonTraining 3 жыл бұрын

Who dis? Ex learner?

@StephenBonutto Жыл бұрын

These are by far the best videos i've ever found ! Thank you so much for them its really appreciated. I do have a question, how would I take these readings to work out the power used by this system ? Would I be using the Line current or the phase current value ?

@JoeRobinsonTraining Жыл бұрын

Thanks so much, I'm glad the videos are helping. Power in a three phase system is line current times line voltage times power factor times the square root of 3.😁

@marvefleksnes6763 3 жыл бұрын

I feel like i should pay for this...Thank you

@SteveNewby1 Жыл бұрын

Hi thanks for the helpful video, Question, How does the Line voltage change if the resistors are different values?

@jasongillean44 4 жыл бұрын

Could you do a video on why a corner grounded arrangement acts the way it does? Commonly referred to as a ghost leg in the US.

@JoeRobinsonTraining 4 жыл бұрын

Hm, never heard of that, I'll look into it. 👍

@scottishbhoy5063 2 жыл бұрын

Joe do you think you could do a video for electricians explaining what difference in potential means etc

@artipunase 3 жыл бұрын

Great video !! Just one question out of curiosity, since Delta system doesn't have a neutral, what happens to residual current in case of unbalanced load ? How do we deal with when the three loads have different power and drawing different current ?

@JoeRobinsonTraining 3 жыл бұрын

Great question, stay tuned for a future video. 😊

@markrowland5393 4 жыл бұрын

Thanks for this great video, Joe. Just to satisfy my curiosity, all the Wago connectors I have seen have orange levers. Your ones seem to have white levers. Are they a special type?

@JoeRobinsonTraining 4 жыл бұрын

They are Ex rated for use with appropriate enclosures in potentially explosive atmospheres.

@markrowland5393 4 жыл бұрын

Ah, yes. I remember now. Thanks.

@josephkinoti8834 2 жыл бұрын

Very clear to me now. I have a 5.5kw motor that has line voltages as follows: L1-L2 ..219V, L1-L3....379V and fails to run at all. Its powered by a 5.5kw inverter. is the problem with inveter or motor?

@aaronfitzgerald9109 Ай бұрын

Do you do videos on transformer vector groups?

@wadib3eed7 4 жыл бұрын

Really is a great video. How much power and resistance rated on the resistor ?

@JoeRobinsonTraining 4 жыл бұрын

Thanks very much, think it's a 2.2kW resistor with a 50W power rating.

@wadib3eed7 4 жыл бұрын

@@JoeRobinsonTraining 2.2K ohm or watts?

@JoeRobinsonTraining 4 жыл бұрын

Yeah, sorry 2.2kohm, no one proof reads my messages! 😂

@toughastank 2 жыл бұрын

When drawing on text book comes to life!

@adebayoagbaje 4 жыл бұрын

Thanks once again, Joe. So, how do we calculate the total power developed by this setup? Will is P = 3 * Phase current * phase Voltage = 3(0.1294 * 430) = 55.6W ? where 3 is the number of loads/resistors?

@JoeRobinsonTraining 3 жыл бұрын

Very close, stay tuned for a future video!

@leocomerford 3 жыл бұрын

Just one question, to be clear: if you had used the voltmeter to measure the voltage between any one of those three live wires and a neutral or earth wire, you would have got a reading of 430/sqrt(3) ≈ 248VAC, right? And if the voltage between any two live wires had been 400VAC, you would have got roughly 230VAC between any one live wire and neutral or earth?

@rohulamin5353 3 жыл бұрын

Have u got any video on semi conducter ,diac , tric and transistor

@JoeRobinsonTraining 3 жыл бұрын

Not yet but it's on my to do list. 👍

@dilipjain6899 4 жыл бұрын

What is the use of calculating these relationships between line voltages and phase voltages? What is the use of this star and delta connected three-phase system?

@JoeRobinsonTraining 4 жыл бұрын

It's how most generation, transmission and distribution systems work.

@ef7480 3 жыл бұрын

One restricts the start up current on a motor so over current does not affect other equipment, tripping etc and once it is spinning normally after overcoming the initial start up it is then switched to the other which allows the full power to keep the motor turning at full efficiency. Star then Delta...( or is it the other way round...?) or something like this at least..

@LocoSajoca 3 жыл бұрын

Joe, would I somewhat be right in thinking that star connected loads behave similarly to resistors connected in series? - as in the current is the same throughout the circuit. Also then, delta connected loads would behave similarly to resistors in parallel with regards to the voltage?

@JoeRobinsonTraining 3 жыл бұрын

Kind of, star and delta are sort of additional ways of connecting loads. You can also have series and parallel circuits connected to three phase systems.

@LocoSajoca 3 жыл бұрын

@@JoeRobinsonTraining thanks for the reply, and helping me in getting a better understanding of star and delta connected loads. Can't wait to watch the rest of your 3 phase videos

@gooddeedsleadto7499 Жыл бұрын

Can we also use Krichoffs law to calculate phase currents?

@JoeRobinsonTraining Жыл бұрын

Yes, taking into account the fact they're out of phase. 👍

@mhalarjani 2 жыл бұрын

Thanks sir Pls I measure delta load I found neutral have 8.5 Amp Phase A 4.5 Amp Phase B 3.75 amps Phase C 3.3 amps ??

@irakperez 3 жыл бұрын

Hi, Phase angles for the 3phase supply are 120º? Thank you in advance.

@JoeRobinsonTraining 3 жыл бұрын

That is correct. 👍

@irakperez 3 жыл бұрын

@@JoeRobinsonTraining Thanks a bundle. Awesome videos man! and I'm just started!

@lsnogaming2893 4 жыл бұрын

🤩

@joshuacaldwell5887 3 жыл бұрын

Just a question Joe but what would happen if you had a 3 phase installation but there was no 3 phase equipment but single phase loads spread out over the phases. So only 1 neutral for the return current from those 3 phases. Is that where you would have to run a bigger sized neutral to cope with all the returning current?

@JoeRobinsonTraining 3 жыл бұрын

Great question, if you watch my three phase playlist you'll find an answer to this question in the videos where we calculate neutral current. The answer may surprise you... Three Phase: kzfaq.info/sun/PL7eNzIRgKe055yGSS4TaKks1WVQ2JDsKU

@joshuacaldwell5887 3 жыл бұрын

Oh sweet thanks for that. I'll watch the whole play list tomorrow night. My head is a bit overwhelmed for now. Thanks so much for your vids

@JoeRobinsonTraining 3 жыл бұрын

@@joshuacaldwell5887 my absolute pleasure, I hope they're helping. 😊

@AndrewCook7 Жыл бұрын

Where does the square root of 3 come from Joe. Why is the current in delta line current not double the Phase current.

@gooddeedsleadto7499 Жыл бұрын

Current is going to be the same before and after the load in the delta circuit?

@JoeRobinsonTraining Жыл бұрын

Yup, until you get into the line conductor. 👍

@jackninnu9719 3 жыл бұрын

👍

@JoeRobinsonTraining 3 жыл бұрын

👍

@MrAshwindersingh 2 жыл бұрын

Hi how can i get 3 phase at home

@rithysorm8692 3 жыл бұрын

How about Energy in Delta connection

@rithysorm8692 3 жыл бұрын

I need formula

@tunesbombom8d442 4 жыл бұрын

Please can you make series about motors Its too important And nobody make good series Such as synch motor Induction Servo Stepper Etc etc etc

@JoeRobinsonTraining 4 жыл бұрын

Working on it as we speak, there are some videos on Motors on my channel already with a lot more to come!

@deniscotter525 3 жыл бұрын

Great video but you never mentioned L3 , you only explained 2 phases, I know it's obvious for people who understand the topic but for people with very little knowledge of 3 phase going over all components would be better for clarity, I've worked with 3 phase of all my life but I had a lot of questions or when I started trying to understand the subject. But as always great video , Cheers

@JoeRobinsonTraining 3 жыл бұрын

Good point, might be worth doing an extra video. Watch this space!