Answer / thowsif

For the Operation UPS Battery is Essential,

UPS Will work without a Battery also,but in event of Power
Faulure it will not supply the power to the load as thier
is No Backup Power..

Answer / prakash veer singh

These system is not working . Because battery is part of
those system. without battery these system is not complete.

Answer / bala.a

yes mr . Ram statment is correct . This system is working
in Nokia compus- chennai

Answer / ramakrishnan

UPS can Work without battery by using a technology called
FLYWHEEL where it can give a back-up of 20secs.

This system is currently working in france and also in some
other countries where Auto transfer switches ON their DG
within 10secs whenever the EB fails.

Answer / ram

Mr.Bala Can i know the brand of UPS working in Nokia

why we connect dg neutral with ground?

1 Answers  

VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

1 Answers  

If there is major % of Voltage harmonics in the system, how can it be control or reduced?

0 Answers   JCN, Wipro,

What's ND relay & it's functions?

2 Answers  

why insulation cost is more in underground cable than in overhead line?

2 Answers  

what is electricity

3 Answers   APGenco,

What do you understand by external characteristics of a d.c. Generator?

0 Answers  

in ac system the current wave form becomes zero for every half cycle then how can we get continuous supply can any one answer to this plsss

2 Answers  

can i used 400A SFU (for the use of PA fan motor),if my BUSBAR rating is only 315A?????answer me quickly as possible.......thanks

1 Answers  

why we r using 4-20ma instead of 0-20ma in instrumentation

2 Answers   EID Parry,

What is load boxes ?

0 Answers   AMIE, PEPL,

HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?

0 Answers