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.

why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??

0 Answers   Descon,

---

When we synchronize the Generator BKR with TIE BKR then Gen BKR is hold but TIE BKR is Tripped on Non directional over current but when TIE BKR is Syn. with Gen. BKR then no fault occur so what is the problem

1 Answers   ABB,

---

Which are the types of breakers used in High Tension (HT) side?

1 Answers  

---

1.What is isolators and bus bars?give answer in details

2 Answers  

---

what happens if generator is running leading power facotor?

9 Answers   century,

---

if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

0 Answers   Power Plant,

---

10 Mtr Hight of Lighting Arrestar how much area coverd??

0 Answers   OmniActive,

---

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

6 Answers  

---

Why double earthing is required ?

1 Answers  

---

How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.

3 Answers  

---

Is KCL applicable for close circuit?

2 Answers   Toto,

---

1. What does mean of "PS" stand for Diff. CT class? 2. What is the formula of KW for 1Phase load inturms of voltag,current & P.F.?

4 Answers   Hero Honda,

---