Answer / arvind

yes there is an answer fir that, the answer is

KVAR=KW(inv(tan(PF2)-(inv(tan(PF1)))
where tana is desired power factor and tanb is your current
pf.
now to calaulate your a and b parameter we use this formula
power factor =cosa and power factor=cosb
i.e., inv(cos)=power factor
put this in above equation uyou will get your KVAR RATING
but you should the KW of the load.

Answer / madhu

this is also calculated from power triangle. i.e.,
KVAR=KW/COS(@).

what do you know about electrical

15 Answers  

---

What are the Application of CT & PT ?

2 Answers  

---

how to reduce earth to neutral voltage?

8 Answers   Field Gun Factory,

---

What will happen if primary of transformer is fed with Square wave instead of sinsoidal wave ?Will it operate or Not?

3 Answers   Areva,

---

How to calulate Locked rotor amper(LRA) for compressor type motors?

0 Answers   MAF Dalkia,

---

---

differance b|w ground, neutral&earth

11 Answers   Bhel, SKH Metals,

---

I have recently seen a transformer which had two primary terminals and was connected between two lines,i would like to know what kind of transformer is it?short discription about it,any advantages,purpose of usage of the same.............

8 Answers  

---

what is the difference between squirrel cage & slip ring induction motor by construction & working principle ?

1 Answers   Sail,

---

why use phase displacement in transformer.and effect of phase displacement on transformer

0 Answers   IOCL, ONGC,

---

do we use links in a dc circuit?if so what s its use in it?

0 Answers  

---

what are problems caused by the pdu in rack server

0 Answers  

---

What determines the thermal loading on the motor?

0 Answers  

---