Answer / dinesh kumar

In earth fault protection the feeder or drive is protected
against an earth fault.In restricted earth fault protection
the complete winding of transformer or generator is not
protected against earth fault depending upon the value of
resistance connected in neutral grounding.If the earth
fault occure in the part of unprotected portion of winding
the eart fault relay will not trip

Answer / srinivas

earth fault protection allows the total fault current passes through the conductors, by this there may be chance of insulation breakdown, leads to machine failure.

restricted earth fault protection consists the resistance in the neutral wore that limits the fault current to certain level (it depends on the value of the resistance being added), there by more safety to the machine and auxiliaries.

What are the advantages of nichols chart?

0 Answers  

---

At what speed an electric car can run with 2 HP motor of weighing 400 kg?

0 Answers  

---

What are the Safety measures in central chiller plant? Explain them?

22 Answers   Carrier, CPIC, HSL, JLL,

---

tell me any book for current n potential trasformer with full knowledge ?

1 Answers  

---

Is electro plating what type of load whether resistive, inductive or capacitive loads

0 Answers   Apollo,

---

---

what is zinc diffusion?

0 Answers  

---

Difference between low impedance and high impedance Restricted Earth Fault

0 Answers  

---

Hi Friends pls give information regarding BARC written test. am attending by 20-5-2008. mail me to kkumarei@gmail.com or message to 9962122264

2 Answers   BARC,

---

concept of busbar and load dispatching..?

0 Answers  

---

how Local Breaker Backup relay working?

1 Answers  

---

What is the permissible sound level for 1000kva DG set and how the sound level is calculated.

1 Answers  

---

which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

0 Answers  

---