Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in K

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum
capacity of motor in KW that can be connected and started at
a single moment? Also explain about any calculations and
formulas used in deriving the same.

Question Posted / amsundar

4 Answers
8328 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connec..

Answer / amr hamad

the transformer should not be full loaded all the time so,
its maximum load should be .8 of its full load rating =400kva
so , maximum power of motor should not increase 320kw with
0.8 pf

Is This Answer Correct ?

3 Yes

0 No

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connec..

Answer / dinesh kannan

Since the motor is connected in 433V side , we consider
powerfactor 0.8.so maximum connected capacity of motor is
500*0.8, but we have to run the motor in single start
there are so many methods are there to start the motor like
DOL, star delta starters based on the starter and starting
current of motor we deside the maimun rating of motor( to
start the motor, minimum 70% of voltage is required

Is This Answer Correct ?

1 Yes

0 No

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connec..

Answer / mohit.k.k

500x.8 = 400 kw

Is This Answer Correct ?

2 Yes

3 No

Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connec..

Answer / vijay krishna rao

considering DOL type of starter (so starting time will be
appx 6 times the rated current)and also considering starting
time of motor may affect the Xmer, then 500/6=83.33 MVA.

Motor rating (pf=0.8)=83.33*0.8=66.66kW (efficiency=100%)

If soft starter is used then motor rating can go upto Xmer
rating.

Is This Answer Correct ?

0 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?

0 Answers

typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

0 Answers Siemens,

why dc exicitaion used in ac motor....?

2 Answers

what is a relay?

31 Answers

how and why are capacitors are used to improve powerfactor?

4 Answers

in our 6.6kv motor feeder[it is having two sources from Bus A&B] earth fault relay is acting, we checked CBCT connection and cable meggerd values found very good still earth fault acting during first two are three start after that it will hold. please clarify what was the reason. if same motor is starting from other Bus-A it will start.

1 Answers Gasal, Voltech,

No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance

1 Answers

what is high and low cut off voltage of BB and DG at SPS????????

0 Answers

when we put inducter in neuteral grounding of genrator.

3 Answers

Is there a diode made that works with AC 120 volt 20 amp? If so can it completely stop all current flow in 1 direction at all times?

0 Answers

1ampear me kitna watts hota hai aur elcb ka pura naam kya hai

18 Answers Al Khayyat, Alpha G, BEC, Bhel, CGS, Electrical, Fiem, Firmenich, HLG Habtoor Leighton Group, Jash, Kandia, Maruti Suzuki, Minda, NTPC, ONEIC, Pace Process Controls, SMTC, SR, Sunrise Electrical, Sushil Enterprises, Suzlon, Voltage,

As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

3 Answers

For more Electrical Engineering Interview Questions Click Here