Why OC test on LV side and SC test on HV side | Interview question

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Why OC test on LV side and SC test on HV side | Interview question
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[@PrassannaKaruppiyan]

Sir notation for transformers should be in phase, neutral not +,- Too many students r watching u sir...

[@chinnakarlapraveen9966]

Offcourse phase means +, neutral means -.

[@ThePiSquareAcademy]

Dear Prassanna, its good that you have asked this question. Lot of entry level electrical students have the same doubt. I suppose you are also an entry level individual and newbie to our channel. Because if you would have watch this video kzbin.info/www/bejne/fqfJdId5q5yqoqs then you would have got the reality. Anyways you can continue following our channel for more such clarifications.

[@satishkr4244]

Hi, another point i can add to this concept of SC and OC test OC test We can do OC test on HV side * OC test depends on voltage *Connecting leds( wires) insulation should be more because we are going to give high voltage to transformer (**Cost consideration) * as per IS no load current should be less than 2 or 3 % of rated current, so If we do OC test on HV side we need low range ammeter for accurate current reading. We can Do SC test LV side * LV test depends on current *Connecting leds( wires) conductor size should be more because we are going to give high current to transformer (**Cost consideration) I think these points also valid..

[@satishkr4244]

Basic concept Insulation level depends on voltage and conductor size depends on current

[@poovizhikannanm5230]

Hi sir Welcome back! Missed your why series qns. Please continue uploading

[@ThePiSquareAcademy]

Sure dear, more you share more we publish

[@patakotisrinivas1918]

Excellently explained...very useful information...thanks a lot sir...

[@ThePiSquareAcademy]

Thank you srinivas, consider sharing the video with your friends

[@maramgantihariteja1787]

I always get amazed with your videos🤩

[@ThePiSquareAcademy]

Happy to hear that! Visit lectures.pi2.in/ and get a free trial course

[@JITENDRAKUMAR-sg9xz]

4:19 We cannot generalise this ... bcoz a moving iron type instrument having non-uniform scale can be used to measure both AC as well as DC.

[@ThePiSquareAcademy]

So can you please think, why your laboratory buying PMMC(DC) instruments at all.

[@electricalconcept32]

You are great sir

[@chinnakarlapraveen9966]

Very good explanations sir you are next level

[@ThePiSquareAcademy]

Pleased to hear that, sharing of the video is appreciated dear.

[@jagadeeswarikrishnan8040]

Clear explanation 👍

[@rajkumarsahoo9152]

Good concept sir 👍

[@satishkr4244]

Please neutral current of transformer and effects of it on connected load

[@gaurijadhav1627]

Mind blowing 😇

[@tanyachhabra5945]

Sir, if you say we can't test t/f having high rated voltage like 400V then how we test step down transformers ?? For that as well we require high voltage value.. Please clarify. Thank you

[@elpidiobernardo8014]

God Bless

[@srirammandala2986]

Thank you sir

[@poojaKumari.81]

Cristal clear ❤️

[@dasarathshrestha9733]

What about Digital Ammeter instead of Analogue Ammeter.!?

[@hariprakashbairwa6384]

H V side 400 voltage but its impedance high according to no, of turns then why is current 0,5

[@pandu7820]

What is aim and purpose of conducting oc and sc test? Help me with your answer

[@swasthikkumarjonnada5454]

to test the efficiency of the transformer , I think

[@vamshisagar7820]

To findout the core and copper losess.

[@rushikeshk7894]

It's good information for the students upto diploma but it's not well enough.... I expected much...

[@KaranamUpendra007]

Im not agree with you sir, for the both oc and sc tests. In oc test ur 1st reason is correct and the 2nd reason is not applicable to our present developed technology, becoz we can measure the current with digital leakage current testers very precisely, 0.0001A also we can measure accurately. so i m not agree with the 2nd reason in the oc test. And in sc test also, we can easily apply HV with low current compare to LV with high current. HV with low current instrument manufacturing is less costlier than LV with high current. And low current with HV needs low diameter cable compare to High current with LV. So finally its not about the measuring instruments, its purely about easy power applying and less power wastage.

[@ThePiSquareAcademy]

Good to hear dear upendra, i guess you are aware of the fact that Digital era has begun a decade back, So i appreciate if you focus on 1st reason being a modern day engineer. And it is said in the video that its purely depends on the availability of the instruments. Hope things are clear :)

[@KaranamUpendra007]

@@ThePiSquareAcademy yes sir i absolutely agree with your 1st reason. And as you said we are in modern era of ET, so my request is to please add the modern development details also in that particular topic of video your making Tq sir, your channel is helping alot electrical engineers like me

[@revealingthereality]

How the Current varies with applied voltage Kindly clear the basics for me

[@revealingthereality]

Why should we go for less Current rating in this case the lv side ..Anyway we are applying no load current How the current rating affect the test

[@ThePiSquareAcademy]

Your question is not clear dear, can you please give the clarity on the question?

[@suryasreedharreddy2277]

Make video on series transformer

[@saigiribandi8427]

Sir why voltmeters are connected in parallel and ammeters in series

[@nikolatesla399]

I understood oc test but still my doubt is not cleared ...in Sc test how 10% of rated voltage is able to circulate full load currents ...

[@komalil731]

Phase and neutral are the notations of transformer not +and-

[@ThePiSquareAcademy]

Dear Komali, its good that you have asked this question. Lot of entry level electrical students have the same doubt. I suppose you are also an entry level individual and newbie to our channel. Because if you would have watch this video kzbin.info/www/bejne/fqfJdId5q5yqoqs then you would have got the reality. Anyways you can continue following our channel for more such clarifications.

[@Lomzpaja123]

You cannot explain the reason clearly.

[@bharatrathod1938]

Sir can we dc ammeter for measuring the AC current or vice versa

[@oneinabillion654]

Hi sir, I have a question from my experiment. 1) Why OC test cannot be conducted using half of rated voltage 2) Why SC test cannot be conducted using half of rated current One of my lecturer gave me a hint to look at simplified equivalent circuit. I can't find any answers online. Pls help