WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO

Categories >> Engineering >> Electrical Engineering
Suggest New Category

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE
THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???

Question Posted / shyamalmandirwala

5 Answers
10576 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF..

Answer / gunasekaran

as per standard it is not same cooling is depending upon
the rated MVA percentage impedance depending upon the MVA
rating if low MVA %impedance is low if high MVA %Z is high
in standard upto30MVA we can use ONAN
upto60MVA ONAF
above 60MVA we can use OFAF
upto 1.5MVA AN
if customer asking we can use for colling method for any
rating.

Is This Answer Correct ?

6 Yes

2 No

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF..

Answer / abhishek

according to property there are 2 types of xmer 1.step up
2.step down.but according to construction core type and
shell type.

Is This Answer Correct ?

2 Yes

3 No

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF..

Answer / satya dev

Imopedence is depending upon the core winding and rating
capacity, it is not depending upon the cooling system.

Is This Answer Correct ?

0 Yes

1 No

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF..

Answer / vamsi.n

COOLING SYSTEM OF THE TRAMFORMER IS DEPENDING UPON THE
CAPACITY AND DESIGN OF THE MANUFRATURER THER IS NO
TECHNICAL RELATION BETWEEN PERCENTAGE OF IMPEDENCE AND
COOLING SYSTEM, BUT PHYSICALLY ONAN IS USED FOR LOWER
CAPACITY TRANSFORMERS AND ONAF IS USED FOR HIGHER CAPACITY
TRANSFORMERS IN THAT WAY THE PERCENTAGE WILL DIFFER WITH
EACH OTHER

Is This Answer Correct ?

1 Yes

5 No

WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF..

Answer / akr

yes percentage impedamce depandes on system voltage

Is This Answer Correct ?

2 Yes

11 No

Post New Answer

More Electrical Engineering Interview Questions

Why we use less dia. fuse and conductors at H.T. side, although we use higher dia. cables on L.t. side?

4 Answers RRB,

What is SF6 Circuit Breaker?

10 Answers Sodexo,

what is meant by servo motor ? how its operating either AC or DC?

0 Answers

Pls explain about full theory of salient pole generator?

1 Answers Kirloskar,

What will be MF if we have CT ratio is 130 of 3 nos?

1 Answers

what is the role of impedance in transformer?based on secondary f.l.current(139 amps) and impedance(4.07) of 415/415v of 100 kva transformer. what is the primary current?

1 Answers

Min and max capacities of VCB,ACB,ACCB,OCB,MCCB and MCB

3 Answers apspdcl,

respetsed sir, i have applied for section engg and juniour engg for both chennai and tiruvunabthapur boards for electrical deportments . can u suggest what books i have to follow and and also from which sections they r going ask (i mean weightage and what topics i have to cover) for both se and je for both chennai and tiruvunanthapur boards.......

1 Answers

What is the mulplying factor of trivector meter (11kv) having ct ratio 100/5 amp.

2 Answers

why distribution transformer are of DY11 type?

4 Answers

What is the basic difference between synchronous machine and induction machiine?

1 Answers

How can a equal potential zone be carried out in conductors?

0 Answers

For more Electrical Engineering Interview Questions Click Here