Answer / suresh

diffrential relay used in generator for sense the winding
fualt

Answer / saad

That works on difference of two current thats why known as
diffrential relay for example two cts one on generator
phase ct and other r on neutral side both cts passing for
example 5amps but the direction of current iz opposite so
the resultant iz zero that senses the relay if there is any
fault in the generator so the current increase on fault
side and the dirrence current increase and relay trip the
CB that iz the protection of generator transformer winding

Answer / musa

diffrential relay main protection for generator and
transformer ,between protection area not for outage short
circuit

Answer / ashish umrao

the diffrential relay used in which position when proctect
the specfice jone like feeder ,tranfromer ,bus bar,has a not
fluctuate the voltage .but generator has a variable load so
voltage are up and down so dose not use the this relay.

What should be ideal IR value for 11kV, un earthed, 1 MW motor?

3 Answers   Sail,

---

if u want to buy a motor than what will be the configuration of that motor?

2 Answers  

---

what is the meaning of "i.p.-43" and duty cycle-s1 on the name plate of a asynchronous machine?

1 Answers  

---

On what basis the the size of Lightning arrester for buildings are selected ?

0 Answers   KGD,

---

What may be happen if neutral and earth is shorted in a substation

3 Answers   Bureau Veritas,

---

how to compute kvar in substation feeder to improve power factor and sending voltage

0 Answers  

---

defination of static variable compensator

1 Answers  

---

why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

0 Answers   Siemens,

---

How CT & PT ratings are decided for a 11KV or 33KV transmission line?

3 Answers  

---

can the measured percentage error during calibration of single phase energy meter be negative?

0 Answers  

---

List the disadvantages of constant k filters?

0 Answers  

---

what is the knee point voltage in current transformer

2 Answers  

---