Interested to Buy Any Domain ? << Click Here >> for more details...
If we have a 2000kva load,How much kvar capacitors we go to
add to improve the power factor at 0.9?pls give the
calculation and fully theory?
- 2 Answers
- 7528 Views
- ABB, Unitech, I also Faced
- E-Mail Answers
Answer Posted / n.sinha
The calculation we follow is :-
(kva)2 = (kw)2 + (kvar)2
and the P.F is given as 0.9,
so, kw = kva * P.F
= 2000 * 0.9
= 1800
And, kvar = {(kva)2 - (kw)2}1/2
= {(4000000) - (3240000)}1/2
= {760000}1/2
= 871.78
| Is This Answer Correct ? | 1 Yes | 5 No |
Post New Answer View All Answers
How LT megger works ?
explain the function of brush less dc motor?
what is the role of transistor in Circuit?
what is the difference between torque induced and torque load?compare them with respect to dc motor?
write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.
why occ characteristics of generator is also called as magnatization characteristics ?
How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?
Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method
What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer
What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.
what is meant by flywheel and its role in retardation test
we use capister for power factor. when we use capaciter in dg circuit than defect dg. can we use capaciter bank for dg circuit
i want to know about torque of slip ring induction motor
how to get electrical supervisor competency certificate in gujarat. i did 3 year diploma in electrical
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
