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.

Moving Iron instruments are applicable with a) DC only b) AC only c) DC & AC

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what is excitation/

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