What is Floating Neutral ? Easiest Explanation with Circuit Simulation
ฝัง
- เผยแพร่เมื่อ 15 มิ.ย. 2024
- In this video, you’ll understand the concept of Floating neutral, what are it’s effect and what causes floating neutral. I’ll also show you a live circuit simulation of floating neutral, which will make things crystal clear.
Can we remove Neutral wire? - • Can we remove Neutral ...
Balance vs Unbalance load - • 3 Phase Balanced vs 3 ...
Star vs Delta Connection - • Star and Delta Connect...
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Video Timeline
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0:00 Intro
0:27 Why Neutral is important?
2:33 Circuit Simulation Part 1
4:35 Floating Neutral
5:40 Effects for Floating neutral
6:44 Causes of floating neutral
7:31 Circuit Simulation Part 2
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Created By : Gaurav J
#Neutral #FloatingNeutral #NeutralWire
Which software for simulation do u use?
Very much informative videos, practical oriented. Gr8 going.. very much useful videos to me as I'm doing M.Tech in Power System engineering in COEP
It's called Everycircuit.
Glad to know that my videos are helping you ✌🏻 Do share and subscribe to my channel ☺️
@@GauravJ Thank you so much Sir😊 and Yes, I always tell everyone to prefer this channel 👍🏻
sir how do you make so many beautiful animations which software do you use
The demo of the floating neutral toward the end of the video made everything clear..., and describes what's happening in my condo! However, the building's management refuses to even consider a problem with the neutral!!
This is by far the best explanation of floating neutral.
Thank you 😊
I have been following your videoes for the last couple of years and all of the videos, and way of presentation are superb. Especially this video has blown my mind away.
You explained the concept of floating neutral perfectly. Thank you.
You seriously deserve more views and subs man. Your method of explanation is very crisp and precise. I was thinking about the function of the neutral wire since a long time and your simulation cleared my doubt. But I still have one question. I now know that the neutral keeps the phase voltage constant but HOW exactly does it do that? As far as I understand, by KCL the signed sum of all the currents meeting at a junction is always zero anyway. So why do we need the neutral wire to keep the sum zero? Also, if the neutral stays at (almost) zero volts w.r.t the ground, how does current flow in it without any potential difference?
Wow this is a great explanation . I like the way you simplified the concept. Thank you
Thank you 😊 do share and subscribe
keep going brother ...You are my first teacher....:)
Such a brilliant explanation 🔥
Thanks. Do also check out other videos on my channel 😊
Thank you for the information
Good video and explanation... Thanks
thank you for the very informative training
Do also check out other videos on my channel 😊😊
Thank you very much!
Very nice explationation...✅
Very easy manner of explanation you provide sir. All doubt clear about the floating neutral. Thank you sir
Thank you. Do share and subscribe 😇
Excellent
That was very good. I would like to see that in theory meaning with formula that explain this.
Fantastic video.
thanks for taken to time make video
Very informative.
Thanks 😊 do share the video 😊
Soon you will reach 1M subscription sir .and beautiful animations sir
Thanks 😊
@@GauravJ sir please make a video on why 50 Hz is used in India where as 60Hz in us
For some reason I am not receiving your notifications.
Your graphics are quite impressive.
Very nicely explained. Pls make videos on
1: substation automation (IEC 61850)
2. Data communication through FOTE(104 and 101)
3. What is RTU,PLC, Gateway,Ethernet switch, Modbus TCP/RTU, Goose
sure. will try..!
Great video:)
Thanks 😊 do share and subscribe to my channel ✌🏻
Thanks 👍🙏.....I subscribed
We support you sir keep going, greetings from king fahd university of petroleum and minerals
Thanks
Thanks a lot...
Plz make a video on the neutral in a single phase transformer..
I am having difficulty in understanding how neutral is decided in the output of a inverter as the neutral is not grounded..Would be very glad if u explain this one
sir thanks for the video it was very informative .. can u make a video on how to overcome this prob in distribution
Nice video. Only thing is your 3 phase simulation are not 120deg apart, looks like more 60deg
Super sir,,
Dear Mr.Gaurav, thanks for the great video..Im facing one issue...When one equipments cable got short.The supply voltage on one phase out of 3 was zero and neutral was carrying the load back to main LCC panel...What kind of phenomena it is ?
Thank you sir
Welcome
Thanx for the video with simulation 🎉 Can you please make a video with simulation on concept very much related to this video i.e. what will happen if we don't do neutral grounding and also the second scenario if each house ground their neutral individually?
Thank u for the explanation. I'm not majoring electrical engineering, but ur explanation was very easy to understand even to me! But one thing I wonder is what I read recently in a paper is that in 3-phase motor, like PMSM, the neutral point is intentionally designed to float to prevent harmonic current flow. Well, I'm a college student majoring in mechanical engineering, so I don't have much background knowledge in this field. So I'm really confused. Can u help me?
I'm really happy that i landed on your channel yet you are my favourite, I can suggest the following topic : why always there is acceptable difference in voltage between earth & neutral in normal cases ? ...Once there was an incident in a facility where the voltage difference between E&N was high which led to not operating a machine! ..we checked and found earth cable was stolen from transformer side , provided new cable and voltage difference came back to acceptable level , what's the science behind it ?
I had a lighting circuit experience of low voltage. I measured it at the switch before the lighting. It shown 40Vac. I measured at Distribution Board MCB for lighting outgoing reads 240Vac. Can you suggest what is the possible trouble shooting guide. Thank you.
Sir. Thank you very much. This is very informative. I'm actually looking for this kind of explanation which is somewhat related to the query of our client. By the way, do you have a video of exactly what our client is complaining? It is about line to ground voltage when neutral is floating. She is getting line to ground 27V, and the neutral is floating. The transfomer is 220V delta pri and 110V wye sec. She expecting line to ground voltage to be half the 110V which is around 50 plus volts but she got only 27V. Can you do a video about this (line to ground and neutral to ground voltage with floating neutral)?
Great content & very good explaination sir. u got my subscribe.
I would like to request about Transformer Vector Group. TQ
Can we connect 3phase two source with matching phase sequence irrespective of RYB
Keeping voltage and Freq same.
Hi I have a machine with star connected heaters, each phase has 2 in parallel. It is balanced but I am wondering what will happen when a heater blows open circuit. Thank you
Thanks !
So floating neutral keeps hazadous to touch by hand till it's properly grounded at transformer !?
Thanks for video but where to use floating neutral..? In one of my application 6-Phase generator output connected to 12-Pulse rectifier without neutral wire.. Could you please elaborate application of floating neutral in real time.
thnx for your amazing and easy explanation videos , can you do videos about transformer ,maintains ,calculation, and also tell us what the best courses we must take it as electrical power engineer
Thank you 😊
I already have a course on Transformer.. you can visit courses.theelectricalguy.in for more details
Ji can you please explain why motor draws more current star and less in delta connection
Sir please explain the types of neutral grounding. And uses of it in transmission line.
hi just 2 questions how would you know whether the floating neutral fault is on your side or the distribution side(source side)..2nd is it possible for example in your distribution board all neutrals are tightened and connected properly but there is a break in neutral in one of your circuits running inside a conduit,is it possible that this would create a floating neutral? if it is how would you know it could be a circuit in the conduit?
Question: In single phase, the live wire is connected to many other appliances with different loads. so does this mean the load is unbalance and current will be present in the neutral?
Sir I have a query. In normal case of 3-phase connection when neutral wire is also well connected, just the loads are unbalanced which is obvious in daily life. Some current will flow through neutral wire & go to ground as return path through nearby distribution transformer, Right!
But my question is, does the current in neutral wire only go to one direction (i.e., to the direction towards ground) or it also change its direction (forward & backward) in neutral wire like other three phases?
(Note:- Consider the Neutral wire is well connected to nearby transformer) .
In your circuit simulation video at 4:00 mins, current in neutral is flowing forward & backward directions but I think it should go in one direction only (i.e., towards ground).
Please clarify my doubt.
Sir, in this case which protective device will protect the equipment.
Hi Gaurav, I have a doubt, why are power plants rated in KW, and Generators in kVA?
Please explain directional relays and distance protection
Can you please assist with explaining a three phase sectional variable speed drive system with Bender relay for earth fault protection? transformer is 11kV-690 V AC and connected to rectifier with DC bus
Is a floating neutral the reason why you’d read voltage on neutral to ground?
Hi sir., Please make a video on different methods of neutral earthing (Solid, resistance, and reactance)
Is it okey if i have floating neutral in power inverter from 12v DC to 220v AC?
Can you please post a video for electrical panel form of seperation
Do video about how to calculate and set earth fault, instantaneous current, Plug setting multiplier and time setting multiplier
Which software did u use for the simulation?
Can you tell me why neutral floating is considered in the design?
Thank u sir...
I have a new type of problem..
In neutral also voltage coming..And neutral to earth voltage coming more than 90volts...
In neutral check with tester bulb glowing..But all lights and. Fans are running
Please help me...
Sir ,how exactly neutral carry unbalanced current ...I mean return path for unbalnce current pass through neutral but balance pass through phases,,
What is the reason of showing voltage in neutral to ground...what is its tolerable value...
does polarity matters for my laptop charger, as they have written L on right and N on left side of plug? But my house has opposite polarity and it yet works well for my appliances.
Nope. It doesn't matter. Polarity matters in DC not in AC
Sir, Please make a video on how phase voltage becomes line voltage in case neutral wire is not connected in the system
A floating Neutral situation can also be created on a 3 phase board due to the lock down nut of the Cable lug to neutral bar loosening as a result of vibration from traffic if the Consumer unit is located in a building on the wall closest to the road,
I have personal experiance of having seen this happen !!
why don't we get shock when we touch only one end of inverter battery? As there must be Voltage difference between ground and baterry terminal...
Battery terminal is not grounded like transformer netutral point grounded hence battery +be and -ve terminal no reference voltage with ground.so no shock when we touch one terminal of battery with ground
..but what do you call a neutral line where there is some current present now and than... Example , in Arduino if we have that problem than we would input pulldown/pull-up with a resistor..this is called a floating pin... In this case it's AC floating neutral which is tried to pulldown to the Earth but there is still numbers on the clamp meter..is this not a floating Neutral ?
PLEASE PROVIDE VIDEOS REGARDING FLOATING NEUTRAL IN UPS SYSTEMS
Hello. I am working on building a motor controller for a 3 phase induction motor. I had few doubts
1. Can unbalanced load condition ever occur in a 3 phase delta connected motor. If yes, how?
2. During single phasing what happens to phase voltages and currents in the remaining phases
It would be really helpful if you could explain these things. Waiting for your reply!
By the way I really loved the content
3 phase induction motors are perfect balanced loads. Hence, unbalance cannot happen in them
What is the potential difference that occur at earth and neutral
Zero sequence component is responsible for floating neutral due to unsymentrical faults And unbalanced load. If I'm wrong please correct me sir
Instead of neutral, can we connect earth wire...?
Sir, Please make vidio on a VCB & SF6 Breaker mechanism
sure. will try !!
what about nonlinear loads under floating neutral?
Sir please make a video on difference in neutral and ground. Also ground and earth.
ground = earth, US called it ground while Europe and Asia called it Earth
Which software is that
Yesterday floating neutral condition developed in my house and it damaged two lights. Fortunately I turned off other heavy equipments like fridge, fan and tv. The neutral wire of our distribution transformer was disconnected, later electricians came and repaired the transformer.
Sir in the case of floating neutral will MCB will protect the equipments.
4 pole circuit breaker or ELCB can protect the circuit..
@@GauravJ thanks
What about in the case of a distribution system designed with a transformer with a floating neutral? We have some like this at my job, a large steel mill plant.
So you are saying there is no neutral provided ?
@@GauravJ I believe so. I'm a new electrician so I'm still learning and your videos are great.
But yes, my understanding is the transformer we have on this section of our electrical distribution is delta primary, wye secondary with a floating neutral.
I'll look at our one-line diagram today to see if I can figure out what that transformer feeds to get a better understanding/explanation for you
Thanks. 😊✌🏻
You may have floating neutral because your load would be perfectly balanced (like 3 phase induction motor). In that case it'll not affect anything
@@GauravJ sorry, after thinking a little more I believe I misspoke and confused floating neutral with a floating ground.
Thinking a little more on this, trying to imagine the electrical print in my head, I'm 95% positive it has a floating ground. Not neutral. My apologies
No issues ✌🏻👍
Simulation software is?
Thanks
I think it is "Every Circuit"
Sir please say me software name that you use for simulations...
Everycircuit
Transformer prr vedeo series banay sir voltage stabilizer upto 10kva
Hii Sir, Which simulation software you are using.?
HI the simulation is called as "Everycircuit"
@@GauravJ Thank You very much Sir
Sir how much line voltage in 3 phase system ?
400v or 415v or 440v ?
Bhai it depends on the phase voltage... What you are asking is line voltage... That is always equals to root 3 times of phase voltage
If Vph is 220,230,240
Calculate accordingly
As per transformer rating 433v/ .but distribution company in Karnataka line voltage 400V /230v as standard
Loose ground connection, braking of neutral flat, wrong circuit connection, or short circuit.
How could your simulation generate zero current on the Neutral with 60 ° phase shift? You would need 120 ° to achieve this goal.
What is the simulation software ?
Everycircuit
Sir one confusion that if any of load external earthing/grounding then what is the effect of floating neutral?
I didn't get your question..?
@@GauravJ sir I mean if any of the load /home has personal rod or plate earthing connect to supply then what is effect of floating neutral in that home or load?
If you are using ground as neutral then the same effects as shown in the video
@@GauravJ no sir not using earthing as neutral it is as safety purpose.
Generally neutral is bonded with earth. If we have poor or bad Earth then what will happen with floating neutral current
The earth can serve as a return path as well (just not an efficient one compared to a nice, low resistance copper neutral wire). So, if you have a bonded neutral and earth like a MEN point, and the earth is broken, then most of the time the system will work fine (any imbalance is carried on the unbroken neutral). If, however, that neutral is now broken and the earth was already previously broken as well, you don't have a complete circuit as you have live phases coming in, but no return path. This is extremely dangerous because if there is any sort of short to the body/chassis of a piece of equipment, it may have gone unnoticed previously, but now if anyone touches it, their body may serve as the part that completes a return path via ground (since the copper cable ground is broken/open) and thus they get electrocuted.
do inverter sends back current through neutral wire back to poles when main is off?
If neutral wire got broken then how will a single phase device runs? I'm little bit confused there.. maybe you told about three phase system, but in example you take home consumers who runs on single phase. Please explain this
Current will find another path to return. It can go to equipment's body (metal) or it can go to ground or even in the other phase.
@@GauravJ but you mentioned there will be unequal voltages at each load at 4:45. In case of single phase if I remove neutral wire then the system will power off then how will be inequality in the voltages?
Another thing you told P-P & P-N voltage will varry! This is also I can't understand
The lights I showed in the simulation are single phase load. There also you can see across each load the the voltage is unbalanced but still the lights are ON.
@@GauravJ But that was three phase connection, I'm talking about in case of single phase. I meant to say if I disconnect neutral from single phase circuit then how can a bulb will glow? And how will arrive the question about unbalancing of voltage in single phase
Ultimately your single phase load is connected where? To a three phase distribution transformer right. So, if there is a problem in any one phase it's going to affect the other two
Generally neutral is tied with Earth. If we have bad earth then what will impact of floating current
Same effects as explained in the video.
250 volts phase voltage multiplied by 1.73 equals 433 volts phase to phase.
🤗🔥
Difference between ground and neutral
What is the name of this simulator sir?
Everycircuit
How to ground a moving vehicle
I think motor is prefect 3 phase balance
👍👍👍🌹🌹🌹
I need subtitles