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 ?
- 6 Answers
- 13378 Views
- RR, TNEB Tamil Nadu Electricity Board, I also Faced
- E-Mail Answers
Answer Posted / kathirvelan.j
Battery banks are always connected in series so the total
voltage of the battery bank will be
12*16=192V
10KVA=10000VA
A=10000/192=52 Amps
But we need to consider the safety margin of atleast 125%
on the MCB rating and also there are only standard current
ratings are only available in the market so by considering
all these reason we can go for a 65Amps DC MCB.
| Is This Answer Correct ? | 16 Yes | 0 No |
Post New Answer View All Answers
tell me about roaster switch .& what is the function in transmission & distribution?
list the advantages of RCCB over other circuit breakers?
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
How can we convert 11 kv to 440 volt without using transformer ?
how to calculate cable size in diffrent loads?
Can anybody inform me about the pattern of ECIL GET( Graduate Engineers Trainee) interview for Electrical students? Will there be HR round as well? I thought of preparing for 2 to 3 subjects thoroughly. Will it be sufficient? Please share your thoughts.
why the check zone and main zone are used for Busbar Protn. scheem?
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
What should be the height of basement according to NBCC code?
Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?
What is online and offline ups? how does it works?
We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.
Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?
List some examples of renewable energy?
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
