What is on line ups and off line ups?

Answer Posted / badri narayan satpathy

UPS are generaly two type
1:- on line
2:- off line

1:- on line
In the on line ups at the starting time the ups output
is syncronise with the input supply and when the input
supply is break then the backup supply is starting withen 0
milli second .

2:- off line
in off line ups allways the input power is directly
bypass to output when the input is break then the inverter
section is start to working withen 4 to 6 milli second

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors

1522


How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

1671


how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)

1623


What are the advantages and disadvantages of closed-loop control system?

695


what is the voltage regulation for unity and zero power factor?

1746






What are the necessary components of the feedback control system?

718


1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

1443


how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar

1526


what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me

1525


How energy is generated in hydroelectric power plant?

625


hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)

1429


1 hp is equal to how much watt?

707


Purpose of providing neutral isolation panel for parallel operation of diesel generator

1178


i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper

1583


how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable

1051