Answer / sundram saini

DG Netrual is earth for for Alternator protection because
practical load current difference always on always on all
phases so unwanted current goes to earth and safe the
alternator winding

Answer / r.kannan

1.main purpose to balaning voltage,
2.To protech alternator from fault

Answer / r.panneer selvam

To obtaine the 3 phase 4 wire supply,the 3 windings of an
alternator is star connected and the same is earthed to
protect the alternator from short circuits as well as to
feed the neutral wire to the feeder distribution

Answer / ram niveth

to sense the earth fault

Why nutral wir used thinner than phase wire

3 Answers  

---

how to calculate the megger values for motors and cables?

2 Answers   Adhunik,

---

What is rotary phase converter?

0 Answers  

---

what is the difference between fault current ant short circuit current?

0 Answers   LG Soft,

---

What is the difference between MCCB & ACB Where it can be used

5 Answers  

---

wat is meant by PX class in ct?

0 Answers  

---

WHY IS THE SIZE OF HOLE OF THE EARTH POINT IN THE PLUG POINT BIGGER THAN PHASE AND NEUTRAL

7 Answers   Jindal,

---

what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?

0 Answers  

---

Kindly give the brief explanations for checking 12.5 kvar 440V, 25 KVAR 440V, 12.5KVAR 690V, 25 KVAR 690V capacitors microfarad values. what is the microfarad values for the above four type of capacitors, and give the formula explanations briefly. I know F-50HZ, voltage, and capacitor.

1 Answers  

---

What is the formula to find out the kvar required to improve the powerfactor from .85 to .99 at 1500kw, 415v.

4 Answers   Trident,

---

Differentiate between Low and High impedance Protection

1 Answers  

---

in non technical way how can u define POWER FACTOR??

0 Answers  

---