Answer / mpn

Switching is done by closing the apropriate contactor in
the circuit. Suppose you have a 30 KVAR capacitor bank, a
40 KVAR capacitor bank and a 50 KVAR capacitor bank. Each
will have a contactor in the circuit. If you want only the
30 KVAR capacitor bank in the circuit, you close only that
paricular contactor. If you want 90 KVAR, you close the
contactor for 40 KVAR and 50 KVAR banks.
Also, please note that there is a mistake in your question.
Nobody will use capacitor bank for reducing the pf. It is
used for improving the pf.

Answer / karthikeyan

by using automatic power factor controller it can be
acheived.

can we use ACB for HT supply

2 Answers   Reliance,

---

why not phase to phase fault occure in raining day in hv sub-station?

1 Answers   Getco,

---

what does mean ct knee voltage and burden 

1 Answers  

---

how we can calculate LT side current of transformer

2 Answers   L&T,

---

how ELCB drip when earth and phase touch together?

2 Answers  

---

Please give me a solid reason there are 2 ELCB's If we take Phase from ELCB NO:1 an Netural from ELCB N:2 why ELCB is tripping when we connect the Load?please brief me with detail

3 Answers  

---

In view of Electrical Engg. What is the use of SCR(Silicon control rectifier)

2 Answers  

---

How do we calculate Blower drive Power (kw) If we have Volume m3 and Pressre (mmWC)

1 Answers  

---

how to calculate the over current rating of 3phase motor

2 Answers  

---

what is the solution for meger test failed the MV cable?

1 Answers  

---

is it necessary for 200 kva transformer to have marshaling box and cu plate earthing for neutral

1 Answers   Blue Star,

---

Is neutral transformer can be called as control transformer?

0 Answers  

---