What is the difference between online ups and offline ups?
- 44 Answers
- 207112 Views
- Electrical Tech, GMR, Gravity India, HCL, Indus Towers, NIT, Pyramid, Techno Electric and Engineering, UBS, I also Faced
- E-Mail Answers
Answer Posted / muteka
Online UPS is the one which gives output all the time from
battery whether there is power failure or power on. You
get backing from battery all the time.
Offline UPS supplies Mains to the output when power supply
is regular and charges batteries as well at the same time.
When power fails it switches those batteries to produce
output for power backup.
| Is This Answer Correct ? | 105 Yes | 14 No |
Post New Answer View All Answers
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
what are the safety measures of induction motor?
A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.
How a capacitor discharge weld power supply works? what is the use of a pulse transformer?
what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
What is the exact formula for one weber of magnetic flux?
11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??
How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?
how much LT load can bear by the 100 KW HT connection.
What is “pu” in electrical engineering?
if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?
how is control wiring coding is done in a CRP panel ?
As you achieve greater success with the company after some years, Will you like to be a share holder in our company?
