I have tow 200 KVA UPS, both are in parallel mode.My
question is that, both are running on battery when power
fail, if one of them fail (Eg rectifire fails or some other
reason), at thet time reverse power will come to faild ups
if it comes then it will harm to failed ups or not? if not
then how it protects to faied ups????????????????
Answer / sathishkumar
hi you mean both the UPS in PRS(parallel redundancy systen)
mode.then u have to connect the battery back to each UPS
separately.untill unless we are using as single sourse we
should not connect the both possitive terminals of Battery
bank connection in a common bus bar.if any one UPS failed
and EB power also goes off the entire load will be shifted
to single UPS which is working good condition also the
Battery bank which belongs to that battery bank only
support to the load.
remember in PRS mode output only paraled not input sources
(AC mains and battery back up)
Is This Answer Correct ? | 2 Yes | 0 No |
Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments
what is the string efficiency
can we synchronize star system generators with delta system generators?
why choke is provided in the centre of the tube light?
according to ohms law ,the voltage increases then current is what happened?
Can anybody suggest me about what are all the TECHNICAL CERTIFICATIONS avilable for Electrical Engineers for working people with clear details??
on whcih cycle does gas turbine works?
MCB Rating
What is the function of an exciter in a generator?
Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?
how to do 'pole drop test' on AC generator?
in conventional fan regulators how the current varies with speed?