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 .
}

Answer / javad

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.

Answer / dharmendra

(
Load calculation for 3 phase ac motor



A = 1000 × P(kW) / (√3 × PF × VL-L(V)

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.

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

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.

Answer / guest

50ohm

clarify types of motor operated valves and advantages

0 Answers  

exolain the star delta connection

0 Answers   Toyota,

What is the difference between EARTH & NEUTRAL?

13 Answers   L&T,

how to do CT Burden test

2 Answers  

why surge protectetor work explain with the help of circut diagram?

0 Answers  

What is the power rate of power transformer?

1 Answers  

What is the working principle of servo motor? And explain it.

0 Answers  

Short circuit voltage of a transformer mainly depend on A ohmic resistance of primary B ohmic resistance of secondary C magnitude of leakage flux D cross sectional area of core

1 Answers  

What are all the problems occured while ac generator running in leading power factor at full load condition?

1 Answers  

how can we decide where we have to DYn11 or other vector group transformer

4 Answers   BSL, Knight Frank, Security Printing and Minting Corporation of India Limited,

Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?

0 Answers  

what is isochronous mod? what is voltage drop mode and p.f mode?

0 Answers   ABB,