Answer Posted / karuppiah

Let total power is 1500kw

assume
cos Q1 =power factor before improvement =0.75
cos Q2= poer factor after improvement =0.98
tan1=0.88{cos Q1=0.75,Cos-0.75=46.01degree,Now angle is
46.01,so tan(46.01)=0.88}

tan2=0.2

and
kvar 1= power*tan1=1500*0.88=1320kvar
kvar 2=power*tan2=1500*0.2=300kvar

now, required rating of capacitor bank =kvar1-kvar2
=1320-300
=1020kvar
Capacitor Bank should connect parallel with the load.
Thanks
Karups

in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

2060

---

how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)

1929

---

how desiel generate sart fail of eb?

2152

---

What is the operating principle of turbo-generator.

2283

---

comparision between ACB and VCB

2322

---

when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

1676

---

i have 3500 amp load and select current transformer and perches.how i calculate .please understand

2127

---

what is ATS & RING MAIN UNIT in Distribution System?And its Function.

1946

---

any one can explain the stages of a knee point which is taken during ct magnetising curve.

1739

---

what are safety measures in /control in diesal engine/ explain them?

1744

---

diff b/w normal grounding and resistance grounding

1896

---

How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

2851

---

What are gain margin and phase margin?

1333

---

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

2050

---

What is sensitivity of a measurement?

1091

---