how much load should be given on 5 mva transformer
- 7 Answers
- 24614 Views
- NTPC, OHPC, Power Grid, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / srikanthgss
I think ... since its a 5 MVA transformer , you can have a
unity pf load of 5kw or 4.5mw at 0.9 pf lag or 4.0mw load at
0.8 pf lag .
{ P=VIcos@
Given VI= 5MVA
=> at 0.9pf = 5*0.9=4.5MW
at 0.8pf = 5*0.8=4.0MW
..... etc .
}
| Is This Answer Correct ? | 75 Yes | 7 No |
Transformer have an interesting characteristics ie
You can Load the transformer around 20 % of Full load to
around 120% of full load without any problems(At that time
efficiency lie between 75 to 95 %).But maximum
efficiency will give when copper loss equal to core loss that
is around 80 to 85 % of full load.just see load vs efficiency
curve, then u ll b more clear.
| Is This Answer Correct ? | 51 Yes | 10 No |
Answer / dharmendra
(
Load calculation for 3 phase ac motor
A = 1000 × P(kW) / (√3 × PF × VL-L(V)
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / k.sri405
MVA is the apparent power means combination of active and
reactive power. Load means active power so 5 MVA capacity
means we can load this transformer below 5 mw.if there is a
completely resistive load than it may be loaded upto 5 mw
but practically it is not possible.
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / ramesh
KW = KVA x pf
1mva=1000kva
kva*0.8= kw
5*0.8=4kw
1kw= 1000W
4=1000*4=4000kw
5mva= 4mw or4000w
--RAMESH
| Is This Answer Correct ? | 6 Yes | 5 No |
Answer / addicted to know electrical
Load means current,not Mw(power).So,by looking at
P=VI*p.f....
Since i is load which is always variable....the power drawn
from the transformer will always vary......and hence it is
not inour hand how much load shall be given to the
transformer but the efficiency will be max. when load is
equal to iron loss divided by square of secondary
resistance.
| Is This Answer Correct ? | 2 Yes | 23 No |
what is counter poise conductors
What is Difference Between Induction Motor & Servo Motor
31 Answers Jindal, Kirloskar, KTTM, Star Technocrates, Toyota,
what is ripple ??? what is harmonics ?
What is mathematical model of a control system?
why an ideal voltage source has low internal resistance????
What are the types of power in electrical power?
What happens when generator is running with leading power factor on it say -0.96. what are the effects of it on alternator and the other generators operating in parallel to it.
Can any body describe me why a soft starter is used for 6.6kv induction motor instead of VFD ?
How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?
Why are you like to join it job as a electrical engineering student?
4 Answers Bhushan Power Steel,
why connecting surge unit in contactor coil
What is the importance of creepage distance in disc insulator ?
-
Civil Engineering (5081) - Mechanical Engineering (4448)
- Electrical Engineering (16620)
- Electronics Communications (3915)
- Chemical Engineering (1093)
- Aeronautical Engineering (214)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (258)
- Instrumentation (2994)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (123)
- Power Plant Engineering (171)
- Textile Engineering (575)
- Production Engineering (0)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
