Answer / krish

On line UPS means Supply will come from batteries on line
and charging also on line.
In OFF line UPS supply will come from batteries when main
line supply fails.Batteries will charge on line.

Answer / mehul

in online ups
supply is coming from ups only it will charge on online &
start when your main supply goes that means you machine or
system will not get tripping

in offline ups
when supply gone ups will start to give power so in that
your system will get small time triping

Answer / manju

On line ups are use in software company side for ..........Offline ups are used in home need purpose
Online ups means-no interruption
Off line ups means-slightly interruption

Answer / abanikanta

Besides above mentioned answer (1) I would like to explain some points--
1)Using a online UPS is advantageous for us because of interruption of line supply.As mentioned after main supply fail we use power from battery...........this is a problem :the time it takes to changeover .for example,if our system is much sensitive we may get interruption in getting supply. Normally the the change over time is in order of few millisec.

2) Online UPS is observed to be more economical for higher rated UPS.

Why single core cable required bonding at double end.

1 Answers  

---

what is the common earth

0 Answers  

---

if single phase is having 220v supply then why three phase is having 440v instead of 660v?

4 Answers   C&S, NTPC,

---

what is maximum or Threshold value of current 7 voltage that a common man can withstand

1 Answers  

---

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

5 Answers   AC, Formo Plastic, HBL Power Systems, SECL,

---

What is the previous name of Cox's Bazar

0 Answers  

---

why booster transformer is used in sumpners test conducted on transformer????

0 Answers   Cooper,

---

What will happen if the rotor of an induction motor is fed from a 3 phase supply and the stator short circuited ?

4 Answers  

---

what is the difference between high impedance & low impedance

1 Answers   L&T,

---

the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

6 Answers  

---

What is SMPS,How does it works?

4 Answers   Bharti, TCS,

---

which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing

0 Answers  

---