Nameplate details of Power Transformer | Explained | TheElectricalGuy
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- čas přidán 29. 11. 2018
- Nameplate details of power transformer explained in this video. Nameplate of transformer.
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Mr. Gaurav you are amazing. Kudos to you for this wonderful explanation.
Thanks for detailed explanation, Electrical Engineer rocks 👌
beautiful animation...keep it up n thnaks for the beautiful voice...
such a great video, I like it too much.
Very helpful thanks lot.
You're explain very clearly and very useful .Thanks for vidos
Good explanation !
Thanks sir...nice explaination...
Useful data bro ...
MVA highest rating is with Fans on. Heat run is usually higher depending on the utility. Then there’s the emergency rating, higher yet. That number is not on the nameplate.
Hi bro your videos are super
Thank you for a very informative and use full presentation.
Glad it was helpful ☺️ do also check out other videos on my channel 😊
Your work is really appreciated...👍👍👍
Thanks 😊 Do share and subscribe 😊
The video states Lv leads Hv by 30 degrees, or Hv lags by 330, in this case both numbers should be the same. If it states Lv leads Hv, and then Hv leads Lv, the numbers would be different as indicated.
He should make correction here
Very Correct
Quality maitained bro
One question, with % impedance for different taps, if you wanted to find the ohmic value, would you use the voltage at that specific tap as your kVbase or do you use the nominal kVbase for all? Thank you
Thanks. The maximum temperature rise at ambient 50c is given as 50/55. So in running condition the acceptable max temperature is 50/55 or 100/110?
Thank you sir.
tanks for explanation
Hello Gaurav, I would like to see the "turning sense" to clarify tha phase shift in both cases (HV lags or LV leads) the angle is only 30º
Brother could u explain an vector group YNaOd1
This temperature is measured in oil due to heating of windings in oil, by temperature gauge .if temperature exceeds it shutsdown tranifomer by connected to ACB or OCB. I thank super explanation . Max 70 degree C.
Very good
Amazing
In case of LV winding Why lightning impulse voltage is not applicable?
sir please make a video on why electron is negatively charged and what actually is charge?
Beautiful
Sir In induction motor sometimes efficiency is not indicate why ??
thank you
Aur bhi electrical video daliye..
nice bidyo sir
Thank you so much Sir,
Why transformer name plate made of stainless steel?
Why primary winding represents 3 split rectangles?
Thankyou. Is the LV 1669 amps per phase or the total of 3 phase amps?
details video about transformer vector groping. please i need to understand correctly.
Nice
Gaurav please reply comment of Bill Davis to clear the atmosphere
at 3:03 "LV leads HV by 30 degs or HV lags LV by 330 degs" is not correct. It will be "LV leads HV by 30 degs or HV lags LV by 30 degs"
HV vtg is of 33kv then why we are using transformer of 1250KVA?
We can use lower one?
May I know what is the function of OLTC on power transformer?
Fantastic
Thanks. Do share and subscribe to my channel ☺️✌🏻✌🏻
Dyn11 is power transformer?
Hi ,can you please explain how three phase AC supply is generated from Alternator and Inverter having phase difference 120°.
Sure. I’ll try to post a video on it.
Sir kindly make a video on average power
Nice
#desielectrical
Sir please explain all test of power transformer on practical manners. 🙏 we wait
Dyn11 is -30 deg its wrongly mentioned in nameplate
Sir why transformer primary & secondary power ratting are different
Like 30mva/35mva
Satya Rout it’s not p & s winding ratings.... its actually ratings with out cooling & with cooling
OLTC which side it's connected for HV side or LV side.
If step down power tranformer then OLTC HV side if Generator xfmr then lv side but not necessary oltc may be manual.
You mentioned cooling of transformers with oil forced water forced (OFWF), could you please specify which rating of transformers (MVA) will use these type of cooling.
100MVA & above
the last point about temperature is not ok bro(ambient temp etc)..please check and provide right info..i like your tutoring style though ...god bless you
..
I THINK FOR Dyn11 HV winding i.e (hour end) should be at 11 and LV winding(minute end) should be at 12 then we can say HV leads LV by 30 deg
Good video .How do you define impedance volts ?
% of primary voltage applied that will produce rated current when secondary winding is short circuited.
@@substationtestingandcommis3452 That's right.% of rated primary voltage required to establish rated current as secondary is short circuited
Other transformers have 2 or 3 types of cooling mention as ( onan / onaf / ofaf ) why ? Is that for each phase or primary/secondary winding ?
Hakem M over all transformer because all windings are dipped in the same oil tank ... where fans are provided outside the tank where hot oil move in the ducts
It is for different stages of the cooling process. The hotter the transformer is, the more stages of cooling will be used. When the transformer is cool it will use only natural convection, then it will add forced convection through the use of cooling fans as the temperature rises.
@@Hitlerstopjew good explanation! Further, allowing the transformer temperature to rise results in more output. Large 3 phase oil immersed XFMRs will typically be ONAN/ONAF/ONAF with corresponding three MVA stages. A good example: 30/40/50 MVA at 50C rise means at 30 MVA, no fans running, just natural cooling, at 40 MVA, 1/2 the fan bank is running (forced cooling), at 50 MVA, all fans running. A fourth MVA can be added to denote an increased MVA at 65 C (in this case, 56 MVA). The rule of thumb is each MVA step raises 33% (from 30 to 40 MVA), while the 65C jump from 50% is 12% (from 50 to 56).
Brother there are 4 type of coolings systems most prevalent in power transformers.
Onan
Onaf
Ofan
Ofaf
First is natural
Second is air forced
Third is oil forced
Forth is oil forced and air forced.
There are leading and lagging thermostates setting on different temperatures they contineous watch the temperature behaviour of power transformer in normal and peak hours and maneuver the through above mentioned four systems as required time to time.
(Khalid Mahmood pakistani power xfmr specialist)
Thanks to all comments you help me 🙏
Hon.Best.
Sir appki clock mai fark nhi hai ,minute hand lamba hota hai or hour hand chota hota hai , or jab 11 bjte hai toh hour (small hand ) 11 pr hoga or minute hand hai (long hand wo 12 pr hoga ,pr aapne toh ulta liya hai ...confused
What does untanking mass and transportation mass means?
For larger oil immersed transformers, "untanking" mass refers to the core and coil assembly (or the active part) weight/mass or what is actually untanked by a crane. Some larger transformers (20-200 MVA) can have the tank top plate as part of the core/coil assembly. "Transportation" mass refers to the actual weight as it is transported, the tank with the active part inside. For larger transformers, all the accessories that can be removed are to make the transport weight lower (lower cost). Bushings, radiators, fans, even control cabinets are removed for transport. On the largest transformers (think high voltage transmission systems), oil is drained prior to transport to bring transport weight down even lower. Crossing bridges and culverts gets expensive as weight goes up.
Why tapping are provided on HV winding? Why not on LV winding?
some countries have tappings on LV too..it only depends on usage as mostly LV is secondary in india.
On hv windings current is low as per transformation equation.So tap changing is preferred on hv.On lv current flow is higher and tapchangings may lead to sparkover and resulting winding destruction
You should clearly mention that the phase differance will be only between the LINE VOLTAGES of the Primary and Secondary windings. PHASE VOLTAGES of the Primary and Secondary Windings are always in Phase.
What does mean by 10KVA rating of the transformer? Is it transformer input or output? Please clear me.
it means 10KVA load can be supplied by this TF.
Great...Thanks...but every one is skipping to explain the percentage impedance....
It is % of rated primary voltage required to produce rated current when secondary winding is short circuited.
Pls explain nameplate details of a motor
isn't 11 min 66 deg? ((11/60)*360)
Pls explain tapping theory
🙋♂️💟🙋♀️
DYnAllavan!
Question: why do engineers use % of Z & not Ohms?
⁰0
Very good