How to know the back up time for a 5KVA UPS which is
connected to 15 nos. of computers? Is there any formula for
this? pls. tell me.
Answer / k.prakashchandra
Back up time is dependent on storage capacity of
battery.vxAH=stored energy in watt hours. Divide this by
load in watts to get back up time in hours.If the batteries
are in parallel add up AH.If in series, AH of one battery is
to be considered adding voltages. Use identical batteries.
Is This Answer Correct ? | 4 Yes | 0 No |
In which type of circuit short circuit is dangerous in parallel or series and why?
what is F.A.P in fire alarming system?
What must be the minimum distance maintained between 2 Generators as per International standards?
What are the probable causes for failure of heating elements
In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?
i want to ask that as everybody knows that in star connection on star point is called neutral. my question is that why on that poin called neutral. what is the reason behind it. what is the logic behind it. i heared somewhere that on this point all phases current become zero thats why. if this answer is right then prove why on that point is current become zero. if this answer is not right then tell me the right answer. post ur answer here or on my mail address. m.ikram786@yahoo.com m.ikram555@gmail.com. thanks.
What will happen if mains neutral and generator neutral shorted?
How many types of DC current
1 unit or 1 kwh means how much kva
Anyone who can recommend an equivalent to Envirotemp FR3 of Cooper?
In motors how many types of cooling systems were used?
Is it posible to instal one more SMDB from the existing SMDB and is it practical.