Answer / mahmood ahmed

Earth affects the calculation of capacitance of three-phase
lines as its presence alters the electric field lines.
Usually the height of the conductors placed on transmission
towers is much larger than the spacing between the
conductors. Therefore the effect of earth can be neglected
for capacitance calculations, especially when balanced
steady state operation of the power system is considered.
However for unbalanced operation when the sum of the three
line currents is not zero, the effect of earth needs to be
considered.

Answer / abbas

what is effect of earth on three phase line capacitance?

Answer / rm

FAILURE OF CT PT

May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

0 Answers  

---

State Maximum Power Transfer theorem.

0 Answers   ABB,

---

does meager test perform on lightning arrester ? if doesn't then why ?

1 Answers  

---

what is suitable alternative for an igbt?

4 Answers  

---

whate is aelectrical power fector for exampal

8 Answers  

---

Why Indian Electricity frequency desined 50 Cycles as developed countrys are using high frequency with low voltage

1 Answers  

---

What Is Transformer Impedance ?

6 Answers   Con Edison,

---

why PD testing for power cables

1 Answers   Bhushan Power Steel, CSE, Datre Corporation,

---

how is positive, negative, zero sequence is happen.. how is effect on 3 phase system

0 Answers  

---

what gas is present in incandescent and florescent bulbs

4 Answers  

---

What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.1)

1 Answers   Greenko Group,

---

Calculate the demand in KVA for a three phase 440V power source drawing 1100A current

5 Answers  

---