I have tow 200 KVA UPS, both are in parallel mode.My question is that, both ar

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????????????????

Question Posted / shri..

1 Answers
5325 Views
I also Faced
E-Mail Answers

I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery..

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

Post New Answer

More Electrical Engineering Interview Questions

On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

0 Answers TNEB Tamil Nadu Electricity Board,

how to mesure the earth pit value and what is the minimum value of single earth pit?

3 Answers

All the voltage drops and the source voltage added together in a series circuit is equal to

2 Answers

how to calculate the fault in substation

0 Answers

how do you reduce the skin effect

2 Answers

why neutral should connect to earth in delta-star type transformer

4 Answers

whycircuit breaker is not connected at the generator end where the capacity of the generator is more say 60MW, 100MW etc.

2 Answers Adani, Adani Power,

What is a parabolic signal?

0 Answers

what will happen when excitation of a synchronous machine is suddenly reduce to zero when it is running at full load..??

7 Answers

Why power genaration in India is at 50HZ while America its 60HZ

0 Answers TATA,

why substation rating interms of 11 multiples???like 11kv/33kv iis there any special reason???

5 Answers

Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings

0 Answers

For more Electrical Engineering Interview Questions Click Here