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3 Phase Balanced vs 3 Phase unbalanced system / load | Explained | TheElectricalGuy
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- Опубліковано 13 лип 2018
- Three phase balanced system or load and Three phase unbalanced system or load are the two most commonly used concepts in power system. But, what do we really mean by a balanced or unbalanced 3 phase system? What are the parameters that decide whether a system is balanced or unbalanced? So, if you want to get the details and the basics of a 3 phase balanced and unbalanced system, watch the video.
Star & Delta Connection - • Star and Delta Connect...
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That was a smashing explanation which reminded me of my training in ac theory many years ago. Nicely done!
Good video. I would have liked to see more explanation around how the unbalance creates current flow in netural.
I watch HVAC SCHOOL channel to continue learning about my HAVC trade. I'm so glad I've finally found someone of the same quality to continue to learn about my Electrical trade! Thank you for these videos!
Hi sir, really liked your video. I'm not an electrician I am a DIY guy. I was wondering if it is possible to connect 2 or more ac power sources ( alternators or generators for example) in parallel, in order to obtain higher wattage whilst maintaining same voltage. For example, if the source produce 220 each. I want to keep the 220 but with high load capabilities.
Yes that is possible and done i many places, the problem is you have to synchronize them meaning that L1 L2 and L3 have to be "in fase" when connected or it will not be possible.
thank you for this 🥺 it is hard to learn with yourself specially now Online class i really enjoy watching and at the same time learning, now i have a learnings about 3phase system ❤️ thank you i know that it was 3years ago. but this can help not only me a lot of student will appreciate it thank you
Wlcom
This is fantastic explanation I had never seen is in english
Sir,
What is the problem if the neutral is earthed in load side inorder to bypass unbalanced current?
Excellent explanation.
You can’t imagine how useful your videos are to me..
Keep going bro
Thank you friend. Do share the video with your friends, so that it will also help them. 😊
I too have Mr Gourav.. u r videos r so clearful.. Understandable.. I often recommend these videos to my students.
Thanks for the video, which is the software u used to simulate ?
Is It bad to have an unbalanced system?? Also if you have 3 separate inverters and turn them on at diffrent times will the source be unbalanced? Is there a device that can balance a wave form?
Thankyou for these videos ❤️
Glad you like them!
Sir,Why the neutral conductor size is half the size of phase wire, during unbalanced condition the neutral current may be equal to phase current?
That was simple ND a neat explanation..keep going...thank q😇
Thanks 😊 do share and subscribe
Great video. Do you have any videos on calculations? I couldn't find one on your channel. I am currently learning Wye and Delta, balanced and unbalanced. It is difficult to find a video that will show how to learn the calculations. Thank you for your videos.
Did u find out already? Im currently looking for it as well
If both source and load are solidly grounded and if we assume a negligible resistance in the neutral wire, shouldn't the supply neutral and the load neutral be at the same potential i.e. neutral current = 0 A?
Good video
Please explain use of MATLAB
how to create phase unbalance, is it possible to create phase unbalance using VFDs? or we can also induce the phase unbalance for DOL connections?
Hey can you make a video on fault occur on balanced system and haw 2 phases increase √3times in faulty condition
You are awesome... Thanks for the video
My pleasure!! Do share and subscribe to my channel ✌🏻
Sir how cbct detects these unbalances in phases please make a video on it
Hello sir, there is one question ,What will happen if we connect two AC source of same frequency and magnitude but uneqaul voltage (paralle and series in both case). say, one of 25 kv & another of 27 KV source to 25 KV load. What will be the effect on voltge, Power & current of the circuit as well as to the another 25 KV load? Previously i am working on the same ckt the 25 kv source if from Xmer and another source i am talking about is an induction motor which is connected parallely to Xmer as well as to the other loads. Whenever we require a mechanical energy we used it as a motor but at time of stoping we have used a regenerative braking system, at that time induction motor generates emf is more then 25 KV. One more thing i want to add on we have connected a braking resistors to motor ckt so that the generated power can be dissipated. But what if we didn't connect the braking resistors or if the resistors is blolwn out. What will be the reaction in ckt. If possible please make a video on this or send the explanation to my mail id pushpakbhangale303@gmail.com
Please explain concept of floating neutral
Hi.. here is the video on floating neutral
ua-cam.com/video/b9hDHGxaufM/v-deo.html
Thank u sir.....and sir plz one request plz do video on power system
Thank you. Videos available on my channel. Do check it out
will you please explain how grounding is compensate unbalanced system to balanced system.
Thank you. This was a good refresher.
Do also check out other videos on my channel 😊
Thanks for your easy explain.
What is the allowed unbalance persent of current in three phase motor and if I connenct neutral wire will protect the motor from heating?
Hi. A three phase motor is a balanced load and hence no neutral is required.
Good explanation thanq sir 👍 iam new subscription 🤗🤗🤗...
How can we maintain the equivalent current in each phase which are use connected to other appliances as well as three phase induction motor .
suppose
i have three phase motor which i use to run in delta
and if i select one of phase for single phase motor , definitely there's the unbalance conditions appear in three phase induction motor
how can we maintain it...
Hi
Thanks for your nice explanation.
You are welcome ☺️ do share the videos!
Dear Gaurav;
Ok, we have understood unbalanced system but how can we balance an unbalanced sytem. ( especially 380 system driven by 220v + capacitor)
Thanks for doing these videos....! Expecting more videos
I am requesting upload video on effects of faults on alternator.
Sir where does neutral current go back to in case of unbalanced system ?
Neutral ground transformer of alternator?
Hi sir can you please explain why 3 phase falt cable one conductor get different reading ?
Very easy to understand
Hello gaurav I have a basic question. In a.c. star connection three coil will form a 3phase. We all know that we are making phase neutral in a sane wire for All three wire carrying electrons which always flow towards the phase direction my question is why not all three phases electron going towards neutral direction and meet. Why it is going always opposite side of neutral. What is the reason behind this.
Phase and neutral wires are different. To complete the circuit current needs a return path and hence it flows through the neutral.
Thanks brother for your easy explained I have understand easily❤️😍👍
Good. Do share and subscribe to my channel ☺️✌🏻👍🏻
Sir, will you please upload a video about connections of windings in a power transformer
I am new to electrical things. As seen in the video, on balanced load at any degree the current is same. But in unbalanced load current varies in 3 phases and neutral is needed.
what is the function of neutral in unbalanced load and what happens if neutral fails?
Why neutral is not needed in balanced load and what happens if neutral fails?
In balanced system neutral is not needed because the sum of return currents is ZERO (watch video from 2.10 mins), but in case of unbalanced load the sum of return currents is not zero and hence there will be some return current for which neutral is needed. And if neutral fails, the machines start heating and this will reduce the overall life of machine.
WHAT is the current returning path in delta connection plz sir describe it 🙏
What will happend in balansed system if 1 phase line is interrupted,what current will be then in?
Suppose an industry is supplied from two 3 phase transformers, and somehow on the installation to the loads, the earth is swapped, is the any effect?.
Hello sir,Thank you for your great videos, I’v a refrigeration compressor works and then stops for less than a minute and when measured the current for 3 phases, I noticed L2 giving a very high current "3 times the normal value" and L1 and L2 normal, what is expected to occur this problem, Even though there is a failure phase sequence in the circuit.
thank you your language is smooth and easy to understand
Thank you for good explanation of balanced 3 phase distribution. Have question, Using 3 phase 208 volt Y power at our church. 3-phase to large HVAC equipment, Using individual phase legs and neutral to provide 120 volts to utility outlets in building. When circuit breaker is shut of on one of the 208 volt legs we see a small voltage across the switched off leg and neutral. Interested to know what causes small voltage appearance and if it is drawing any power. When measuring small voltage, ~20 t0 40 volts, there is no load across wires. Any explanation will be appreciated.
It may be because of the capacitive charge which is present in the transmission line/cable. You can use disconnector with earth switch, using earth switch you can ground the charge.
My 3 phase generator producing a low voltage on one phase the other 2 phase gone high? What is the reason and how can I fix this issue?
Hi
We want to know if DC grounding must be separated from AC grounding in telecom site.
Sir , Can You post Potential Transformer Secondary connections
Dear Gaurav, I am wondering: if a 3 phase motor moves only a small angle (like 30 degree), rather than 360 degree repeatedly, is it a unbalanced system?
No. 3 phase motors are balanced loads..!
What is the acceptable limit of ampere difference in load balance
Kindly delve into single phase step down transformer operation. With attention
to the NEUTRAL connection thru the two windings. Primary and secondary.
Thank you. Also please MENTION how much current is on the Neutral
of an unbalanced system.
Thank u sir...ur videos very useful
Thanks! great explanation.
Do share and subscribe 😊
Thank you. How we can eliminate the unbalance power?
That is practically not possible
Thanks for the video.
perfect explanation.....well explained hats off bro
Thank you. Do subscribe to my channel and also share the video 🙂 you'll get more such easy to understand explanations 🙏
i already subscribed ur channel becoz u deserve it.....i hope u will keep providing us with such awesome videos regarding electrical engineering....
Thank you 😊 sure, I'll keep posting the videos
very nice explanation!
Superb explication 👌👏
good explain.....thanks much.
Sir Please make a video on this topic three-phase transformer connections from basic .......please please.
Superb sir...tqq soo much sir...😊😊
You have illustration control for medium voltage switchgear?
is there any scenario where the earth cable can be used in place of the neutral. if yes, can you do a video on that?
3 phase system has unbalanced load in my factory do we have any alternative to balance it ?
how to do three phase unbalanced compensation in control loop?
Very clear explanation thank you....
I admire your knowledge and value the information you graciously share with us. Perhaps it would be better that an interpreter or voice over is used for those of us who lack exposure to so many wonderful cultures and languages.
I think we focus on trying to interpret your English with an Indian accent rather than the education you're promoting sir.
I think it's amazing that people can speak multiple languages. I hope some day I will too.
Thank you kind sir for your valuable information.
I'm just the opposite, the accent helps me and a voice over with some robotic voice would drive me insane. Perhaps it would be better if you exposed yourself to some cultures and languages.
How about a three phase generator that has a balanced resistive load but voltage is not balanced.
Thanks for the tutorial, kindly permit my to ask question. apart from electrical motors, what other devices do unbalance system affect.
If a UPS is installed on unbalance system does it affect the output of the ups?
Where are you from are you from America
Give the problems for this balenced and unbalenced loads sir thank you
Thank you sir
HI Gaurav,
Can you post some detailed videos on inductions motors and it controls
Sure. I’ll try
thanks it was really helpful but need some examples
The best explaination that never heard
Plz explain non linear resistance calculation for a surge arrestor
Please do vidoes on power system protection sirrr
Sure my friend..👍🏻
How about if phases and neutral cables have same amount of current? What is the cause?
Please do video about..in transmission lines voltage is high but current is low..it is not satisfying ohms law how it is?
Sir please make video of poly phase system
Nice
then if the system is unbalanced or has an unbalanced load in 3 phases then what to do to make it balance and all .. a video want on it with example and procedure
Hey. Watch this video to get the answer. -
ua-cam.com/video/dRuYSd7pwSY/v-deo.html
good video
Very well explanation sir🙏🙏,sir can you please make video on three phase transformer.
Thanks. Sure I'll try ✌🏻 do share and subscribe to my channel ☺️
thanks a lot man
Brother what happens for 100 ohm, -100j ohm and 100j ohm can they make a balanced delta load
Thank you. It's helpful.
Thank you ☺️ do share and subscribe to my channel ☺️✌🏻
I have a star connected heater arrangement which is balanced. There is no neutral. What happens if one heater blows open circuit
It will create unbalance. You may have voltage fluctuations!
There are parallel resistors in each leg of star. If one blows I would have 20 ohms in 2 legs and 40 in one. Is anybody up for calculating resulting voltages
plz explain what is per phase analysis ?
Exlent explination
Can u explain one thing for us that if power factor is capacitive for long time what will happen
Please explain how is current flow happen on neutral conductor without voltage it's very difficult to understand me
Yes sir me too
Perhaps the electrons are PUSHED and PULLED from the Hot side of the circuit.
Electrons (negative charged particles in the copper atom) move back and forth.
If not balanced, they would end up at the end of one of the copper conductors.
Smashing explanation
Sir.. I want to know about Negative sequence protection for generators.Kindly explain
Sir can you please fully explain unbalanced distribution system
Good explanation!
Sir I want to video on electronics and on power electronics
Sir please describe the different types of protective relay and zone...
Do video about harmonics in generated
By using nutral in un balanced condition how we Ower come effect of different current drawn sir?
Hi. Check out this video. This might help.
ua-cam.com/video/dRuYSd7pwSY/v-deo.html