Please tell me what is the difference between online UPS &
OFF line UPS?
- 2 Answers
- 4997 Views
- HAL, I also Faced
- E-Mail Answers
Answer Posted / sunil guru
>>>>>ON LINE UPS -- HAS MUCH MORE FEATURES THAN OFF LINE AND PRICE WISE ITS PRICE IS Much higher THAN OFFLINE
IN ONLINE UPS THERE IS NO CHANGE OVER TIME SO THE SENSITIVE EQUIPMENT LIKE PC DOES NOT REBOOT,OUTPUT IS PURE SINE WAVE,THERE ARE MANY PROTECTIONS FORM MAIN UTILITY IS PROVIDED BY UPS LIKE (SPIKES,RUGGEDNESS,TRANSIENTS,HARMONICS,OVER VOLTAGE,UNDER VOLTAGE,SHORT CIRCUIT)
WHICH ARE NOT MAINLY FOUND IN OFFLINE UPS.
IN ONLINE BATTERY IS ALWAYS IN OPERATION (AC-DC -BATTERY -DC -AC)
>>>>>IN OFFLINE THERE IS A CHANGE OVER OF FEW MILLI SECOND
ONLY FEW PROTECTIONS ARE PROVIDED
BATTERY IS NOT IN CONTINUOUS OPERATION (IT COMES IN PICTURE ONLY WHEN MAINS FAILS)
FOR ANY DISAGREEMENT CONTACT ME ON parmar20072008@yahoo.com
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
11000volt DG set carnt kaise banvay
why they were using TRIAC instead relay in some controllers and what is the advantages.
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
how to calculate fault level?
How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?
What is shunt voltage and u v voltage witch one best
where can the transformer having vector group Yny0 be used??
when we gave dc supply to 220v dc motor its rpm is 1200. then we gave 180v. how many rpm of its motor. gave answer with calculation at my ID.... ravizak@ymail.com
the winding of Generator and Motor is star or in delta ? and why
can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...
what is the principle of operation of tungstun bulb ??
How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com
why are the maintaine power factor and how can this control and this is how work.
is there any role of power factor with frequency variation? and how we can manage the frequency variation?
Why the output of OP-AMP is always less than Vcc?
