On a 10 KVA UPS we have to provide a DC MCB for Battery bank
of 16 nos (12 V 65 AH).
What Shall be the current rating of DC MCB ?
Answer Posted / asif.k64@hotmail.com
UPS is 10 KVA, and battery is 65AH
Hence if it is a 1 phase UPS
KVA = V*A
10000 = 240*A
A= 10000/240
A = 42 A full load
Approximately a 63 A MCB would be required
| Is This Answer Correct ? | 21 Yes | 7 No |
Post New Answer View All Answers
What are the advantages and disadvantages of the dc motors?
Either It Possible a dc Motor to Run On Ac Drive [ Ex : ACS 800 , Yaskawa F7 ] If it is Possible How Pls Inform Me dinesh_elect_eng@yahoo.com
what about electrical pannel.? What is meant by plc pannel.?
The principle of switching circuits for different types of batteries in application of storage systems
What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.
Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?
Is single load(eg: three phase motor) having all the components like positive,negative,zero sequence components during fault condition?
What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.
Instrument connected to a single phase supply
Please give me a erda placement paper
why we use copper earthing for neutral while for body GI.
We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?
Whether the vacuum contactor requires Short circuit protection?If No,why?
Why does the rotor rotate?
sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company