while buying 30 kva on line ups for 1 phase ouput, we ave
to calculate the number of batteries for 2 hours back up?
how to calculate the ah rating and number of batteries

Answer Posted / k.prakashchandra

AH of each battery X numder of batteries x voltage of each
battery = load x back up hours .AH of battery x total
voltage = stored energy which when divided by load gives
the back up period

Is This Answer Correct ?    3 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?

1396


what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?

1920


A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

1997


how to calculate vfd o/p voltage by frequency

1815


how to read idmt curva

1817






Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

1086


i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

1734


wat is the first thing dat is needed, 2 lay a cable in some area??

1506


Work done in a free expansion process is

795


There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?

1923


Define active and passive network?

768


i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

3120


What is the difference between a fuse and a breaker?

717


hi, could someone help me to find a control design for syncronising panel .

1366


we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?

1425