Transformer Core types

[@ohgoditsjames94]

For single phase core type, the primary and secondary are split into halves, with each half being wound around one limb. The primary and secondary still share limbs, but in halves. The primary and secondary are not on separate limbs. This is done to improve magnetic coupling and reduce leakage flux.

[@mayurdeshmukh2444]

Brother how lv and hv winding are connected to each other ?

[@ohgoditsjames94]

@@mayurdeshmukh2444 HV and LV winding are not electrically connected. They are electrically isolated with paper and pressboard insulation. Assuming it is a step-down transformer, HV winding is the primary and the LV winding is the secondary. When the HV winding is energised, it produces a magnetic field that magnetically couples with the LV winding, causing an EMF to be induced in the LV winding. If the LV winding is connected to a complete circuit, current will flow through the secondary and the transformer is said to be loaded. The core acts as a low reluctance magnetic circuit to concentrate the magnetic flux. By default, high voltages require greater insulation, and if we place it closer to the core, we require even more insulation. To reduce the amount of insulation required, the LV winding is placed closest to the core, followed by the HV winding placed over the top of it. Another reason we have the HV winding on top of the LV winding is so we can easily connect tap changer to the HV winding. A tap changer is used for voltage compensation (increase or decrease output) by adjusting the turns ratio. The HV winding is most suitable for tap changers because it has relatively low current in comparison to the LV winding. In many cases tap changing has to be done without disturbing the supply, we do this by using an ‘On load tap changer’ (OLTC) which can adjust the turns ratio of the transformer when the transformer is still live and loaded. Changing tap positions creates sparking, this is reduced by placing it on the HV side.

[@devendrasingh8403]

Thankyou so much for this video. And lots of love and respect from india. Good day

[@njnear]

As someone who used to design substation transformers, to this day I still find this text-book explanation is missing something. Consider a 3-phase 5-legged core-type transformer. In that case, the core surrounds the winding assemblies and looks very similar to the single-phase shell-type transformer, except that there are 5 core legs and 3 winding assemblies instead of 3 core legs and 1 winding assembly. I've always felt like the most accurate description was that shell-type transformers do not share a common top and bottom core yoke with all other winding assemblies. Conversely, core-type transformers do share a top and bottom yoke with all winding assemblies. Just my opinion, though.

[@-danR]

Unfortunately, these videos are more _descriptions_ , than explanations.

[@greatbill9106]

Wel said and factual. Without a technical understanding, the illustration given can be confusing. Because, in a three phase shell type xfmr, the middle phase fits the description of a single phase core type xfmr.

[@commonsenserules7995]

Back in the 70's, the company I worked at, wound the cores on specially designed machines that sheared the core steel in a specific pattern. The cores were pressed into a rectangle shape and annealed to retain that shape for stacking into the coil assembly. The processes were designed for maximum efficiency and production.

[@raidoung4100]

very interesting !!!

[@basharathussain6174]

thanks... nice..... load and clear.... which software did you use for 3D animation...?

[@vinodhkumar9666]

shell type is used for low power& voltage,core type used for high power&voltage

[@privatebuslovers007]

Thanks for the video 💎

[@ShAmS894]

For high voltage and high power applications core type transformer is used,not shell type

[@anlpereira]

You missed the toroidal type. Great videos. tks

[@bulgingbattery2050]

More than meets the eye.

[@VijayMachhar]

Nice explanation sir...

[@Yelinphyoe-r7x]

thks

[@prateeksabharwal1]

really helpful. thank you so much

[@guitarista1994]

Very helpful videos, learned so much! Good job mates

[@Vivek-kw2ep]

What are you doing in this time?

[@sugandhalingam]

@@Vivek-kw2ep hi

[@ronald4380]

Excellent video ... very useful.

[@googleccd079]

Loud and clear, thanks bud

[@mustafaakl7699]

Thank you for always good explanation

[@akashdalvi1578]

shell type cooling is not effective

[@merve2041]

it is helpful. thank you!

[@jonahjin4396]

what are the different kinds of transformer core material?

[@danielquintero2339]

It’s usually just iron

[@runbou3485]

អរគុណThank👏

[@sandunisulochana2304]

Thank you❤️

[@Xrip100]

Hello...how u make these animations?...is there a 3D program or something?

[@SabinCivil]

Xrip100 We use Blender for animation works.

[@arupkuet]

its good. but need to know how a shell type transformer works. actually we are habituated to see mainly core type transformer. so it is very hard for us to assume how shell type transformer works..

[@studymadeeasy_sme]

Can you please make a video about flip-flops?

[@pavanbasavaraj7355]

Thanks ✌️

[@aarzooprajapat4343]

Thank u sooo much... for good expaination...

[@Rajesh-Kumar-Mahor]

Thanks

[@TronicYaka]

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[@alexa.davronov1537]

Doesn't explain how core parts as joined together. First plates are insulated. Then different parts of joined plates are joined together. Anyone knows how?

[@aboothahiru6354]

simple explanation

[@swayingGrass]

So why is the shell type has better performance? next video?

[@alext9067]

It's not clear whether those laminations are insulated from each other.

[@ohgoditsjames94]

They are insulated with a lacquer coating

[@beholderer]

You guys are awesome :D:D:D

[@mahersahawneh9324]

thank you

[@ugurbayrak9869]

Would you please make a video about how generators produce Megawatt ? What's the mystery of load angle ? If you were to explain this phenomenon in term of magnetic field principle, I would certainly say that you are the best instructive and impressive ones on earth ! Thanks a lot

[@cya915]

Tq

[@khushboo2522]

Thanku sir

[@hermestrismegistus9603]

toroidal...

[@varshanth9029]

helpful

[@shantappashantappat4417]

❤ super 👏

[@marssineelectronice9987]

Good

[@pratyusha7855]

Well dats breifly explains thank u..

[@SwastikaDoddmani]

Super exeplen

[@manjurhussain9682]

How to pay .I have no bank account

[@manjurhussain9682]

Also I don't know about u tube using to transfer money

[@tauhidansari8272]

The picture showing Shell type is misleading. The commentary that core surrounds winding. But it is a core type shown as shell type

[@sandunisulochana2304]

Thank you❤️

[@GauravGupta-pb8mk]

Thank you

[@catechcore3723]

good