Answer / fernandez

Ratings are provided for normal cooling and forced cooling.
Usually for the same transformer, you will get a higher
rating with forced cooling than with the normal cooling.

Answer / pknam

Rating of transformer is only to define the capacity of any
transformer and the rating can be up to any VA or KVA or MVA.
Cooling of Transformer is not related with KVor VA. It is
only for the best efficiency of transformer. Cooling fan and
other cooling arranement to keep winding cool and To load
the transformer up to its maximun capacity.

Answer / raul

TRANSFORMER RATINGS :
1.rating in (MVA)
2.no. of phases
3.frequency
4.voltage ratio
5.%age imepedance
6.type of tap changer
7.tappings range
8.type of cooling
9.CT arrangement
10.terminal arrangement
11.vector group
12.connections
13.weight of transformer
14.weight/quantity of oil
15.untaking weight(with bell cover)
16.untaking height(with bell cover) and wid HV bushing
17.transportation weight

Answer / ronak dadheech

for single phase-5KVA,10KVA,16KVA,25KVA
FOR THREE PHASE-23KVA,40KVA,AND SO MORE

Answer / sukhvinder

ratings of tfr. are
1500MVA,315MVA,250MVA,105MVA,100/75/50MVA,10/12.5MVA etc.

which protection are used for turbo generator in thermal power plant.

1 Answers   Grasim,

is power factor correction related with vector group of transformer i.e:Dyn11?

1 Answers  

What are the essential parts of a transformer?

2 Answers   NIT,

If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

0 Answers   MEIL,

Why lightning arrester blast in rainy day?

1 Answers   Eco Cement, Mahaveer, MBDL,

Why Trasformers rated in KVA

13 Answers   College School Exams Tests, HAL, Oil and Gas Jobs,

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

0 Answers   MSP, Toyo Denki,

Even when a particular generator in a generating station is under maintenance we are still able to maintain the same power output. How is this possible? Does the tie line between 2 generating stations have a role to play in it?

1 Answers   NTPC,

What is the difference between indoor and outdoor transformer

0 Answers   Ama Airfield Lighting System,

what happens in the primary side of the transformer if transformer is short circuited first and increasing the resistance of the short circuit gradually?

3 Answers   Emerson, IIT,

How to calculate cable size between battery charger to Battery ?

2 Answers   L&T,

why 1.7Uo for HV cable Hi pot test?IE standard why?

0 Answers   ABB,