How can calculate ups battery back up time?
Answer Posted / tapas
UPS Battery Backup time= (No. of battery X Volt per battery X Battery AH)/ Load in VA
(No. of battery X Volt per battery X Battery AH)
Backup = ------------------------------------------------
time Load in VA
Note: KW should be converted to VA before applying the formula
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What difference between ref protection and differential protection ?
what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)
if flux and load static in dc motor and supply voltage increases 20% then what happened in speed
why i can not use thimble on capacitor duty contactor
what is subtransient , transient and steady stateac components
Define conversion efficiency of a power amplifier.
anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS
why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?
what is DRP panels?
how rectifier transformer work in electroststic precipetatore(esp?
Can you explain about TEE protection scheme?
Good morning: I'm looking for some informations about the OLTC or the LTC: I wont to know what the function of the tie-resistor in during the operation of reversing/coarse operation Cordially
what are the disadvantages in GIS over AIS
In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?
mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....