Answer / c.b.t.

26.2kA am I right?

Answer / ranjan maithan

fault level depends on your system's percetage impedance.In
general practice we are using 28KA for 3 secs. or 40KA for
3 secs.

Answer / guest

c.b.t, can u plz exlain how u got tat answer,coz to b frank
i donno how to calculate the fault level of an electrical
system.

Answer / genau

Mr. Ranjan is correct!!
Fault level of the system will depend on the system impedance.

for calculation of fault level, calculate the fault impedance and hence you can calculate fault current from system voltage and fault impedance. product of two gives fault level in VA (Generally specified in MVA)

what is restircted earth fault relay,how it works? what is diffrance btwn normal earth falut relay & restricted earth fault relay?

1 Answers  

---

SUPPOSE A CIRCUIT BREAKER HAS TRIPPED THE THE LINE WHEN A FAULT OCCUR ON IT.NOW WHEN THE FAULT HAS BEEN CLEARED, HOW THE CIRCUIT BREAKER WILL CLOSE AUTOMATICALLY NOT MANUALLY.

6 Answers   Bureau of Energy Efficiency, DVC,

---

What is the differance between Digital Energy meter & Static energy meter? why the KWH diferance between both meters.

3 Answers   Raychem RPG,

---

what is the differance between HT motors And LT MOTORS.

0 Answers   Empire Vitrum Glass, Sappi,

---

what is power factor? is it good or bad for a system? what will happen if power factor increase or decrease?

4 Answers   Bhel,

---

Can any body tell me the different types of LT cables & their application.

0 Answers  

---

What will happen if we parallel two transformer with different %impedace?

3 Answers  

---

If a contactor need to replace with faulty one. what I want to check?

2 Answers   Bhel,

---

explain impact of tariff on energy management..? and what is ABT tariff

5 Answers   TCS,

---

Ferranti Effect says that voltage at the receiving end is higher than that at the sending end. How is it possible?

4 Answers  

---

what purpose to use excaiter in DG.?

0 Answers   TATA,

---

As an electrical engineer what are the responsibilities which i can hold in TCS?

0 Answers   TCS,

---