What is the difference between online ups and offline ups?
Answer Posted / sameer hussain
online ups is a double conversion(dual) ups which firstly
converts AC power to D.c ,then D.c to A.C .the stored D.c
form of electricity remains within the batteries. in online
ups systems load is always connected to inverter. in online
ups system the power supply goes to the end user through
the battery,if there is A.c power cut ,then no harm or
interruptibility occurs .
APPLICABLE IN CRITICAL INSTRUMENTS LIKE C.T SCAN,X-
RAYS,ULTRA SOUND,OPERATION
EQUIPMENTS,SPECTROSCOPES,COMPUTERS ETC......
by SAMEER HUSSAIN
(M.E)
SNA POWER ENG. PVT LTD LUDHIANA
while in case of offline ups sytems the raw A.c supply is
connected by a realy type of mechanism,then the battery and
inverter is bound tothe msin supply. so when there is A.c
Power cut ,the really needs a time gap of 3-5 ms to shift
it to battery mode.
| Is This Answer Correct ? | 25 Yes | 7 No |
Post New Answer View All Answers
how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?
Explain the purpose of inductor in an electric circuit?
what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks
What is the drawback of class b amplifier?
what does mean of RCT and STR in diffrential CT?
How to select the cable and voltage drop in circuit?
Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?
Sir, plz tell me how droop setting is done in parellel operation od DG set ? please give practical example ?
how can i find cable size from current rating?
what is the difference b/w pvc cu conductor and cu breaded wire..?
what do w do when the output of generator is fluctuating?
Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing
What Is Connection APFC Panel In Compony.
I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions
What is the vector group of a transformer,how can it be found out?