Answer / blake australia

To detect earth faults:
Zero sequence refers to the current flowing during an earth
fault. 2methods of decting earth fault.
-Measure the current on the earth return cable
-Measure the current imbalance on the 3x phase cables (do
this by putting all three through the same core balance CT.

Answer / prabhakar

For 51G protection we normally use the CBCT(Core balance
current transformer)for to detect the unbalance current
caused due to earth fault

whether inrush current for lamps or capcitors should be considered cable sizing to feed that load.

1 Answers   Cipla,

---

what happens if we earth negative electrode of an rectifier transformer used in ESP. In which normaly positive is earthd from inside the xmer.

1 Answers  

---

If a capacitor bank is having rating 750kvar for 6.6kv. Then for 3.3kv how much will be the rating of capacitor bank.

1 Answers   OCL,

---

how the earthing point or earthing is taken for ships and airplanes?

1 Answers  

---

how to calculate generator capacity?(kva)

2 Answers   SMEC,

---

How you take care of a motor from over loading and what are the different overloading ratings of different motors?

4 Answers  

---

How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.

0 Answers  

---

what is ASCR cable and where we use it?

6 Answers   BSL,

---

Stator of three phase induction motor creates Rotating Magnetic field.But why not Transformer?

21 Answers  

---

why co incidence factor considered in transformer sizing?

0 Answers  

---

Define peak overshoot.

0 Answers  

---

what is the difference in inductance and resistance.both oppose the flow of current but how.resistance having + ve power in both cycle while inductance having both power.

5 Answers  

---