in GEAFOL Cast-Resin trnaformer of 11/.72kv which has
tapping of 11550v,11250,11000,10246v in primary side. To
obtain 700v. which tapping should be used of HV side as we
have 11000v/720v tapping now .
If the primary voltage [supplied by Utility] it is NOW 11
kV and your transformer at no-load shows 720 V at its
secondary terminals the ratio primary/secondary voltage is
11/0.72=15.278. If you want to reduce the secondary to 700
V you have to change the ratio to 11/0.7=15.714.
Let's say the rated secondary voltage [at no-load] is 720 V.
That means the ratio 11250/720=15.625 it is the most
suitable and you'll get 11000/15.625=704 V at secondary
terminal [at no-load].
Is This Answer Correct ? | 1 Yes | 0 No |
what is different between kvar & micro farad when its comes across the capacitor rating is it possible to convert kvar to mf or mf to kvar
what is doubling factor in making current of a breaker?
What are safety seals?
List any four conventional sources of energy.
1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?
How can we measure MVAR of a 3 phase transformer.....???
At what voltage domestic tubelight works?
In ac circuit R,L,C are connected in series what is the output the circuit? explain
what is the current law ?
what type of euse we should use ? 1- High resistance & low temperature 2- High temperature low resistance
How the Transformer oil testing is done & Why oil dielectric goes LOW & what is solution for that ??
Short circuit current of 2500 KVA 11/0.415 KV transformer both Secondary and primary side. best regards. Ali