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.

Can we manually synchronize two DG sets of same ratings manually without using speed biasing ? If yes then how?

4 Answers  

what will happen if any motor runs long time with star connection in400vA.C. system

5 Answers  

I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

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how can i change the rotation of the AC single phase induction motor and show me by diagram

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In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

0 Answers  

Is there any problem if i connect APFC panel in generator circuit

2 Answers  

If I need to purchase a step-down transformer (from three phase 33kV 50Hz to 400/230V), what additional information do I need from the main supply power line?

1 Answers   MahaDiscom,

What is the diffrece between CAPACITOR BANK & CAPACITOR OF MOTOR?

4 Answers  

Utility company give the supply to customer in KVA but bill them for Watt.why?

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HAI,I HAVE 6,60KW MOTOR FEEDERS IN MY MCC PANEL.HOW CAN I DO MY SETTINGS FOR OVERLOAD,SHORTCIRCUIT,GROUNGFAULT,INSTANTANEOUS TRIP FUNCTION IN MY 4000A CIRCUIT BREAKER?

1 Answers