Answer / varun

occ is graph between the Ef and If.The final value of the Ef is 125% of the rated voltage.The graph shows that for the low values of If the relaion is linear between If and Ef.an when the values of the IF is increased the Ef vs IF will not be a straigt line because of the saturation in iron part in magnetic circiut.and magnetic saturation sets in...for this reason occ is called magnetising characteristics...

what is mean by xlpe swa pvc

5 Answers  

---

Which standard we are following earthing resistance test

0 Answers  

---

What is Diff btw MCP & MCB????

10 Answers   Athena, Emerson, Suzlon,

---

why VCB are not used in 132KV system(above 33KV system)

6 Answers   Al Ahleia,

---

Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

0 Answers  

---

---

What are the possible causes if load is not same on all the three phases

4 Answers  

---

I want to know what must the CT ratio be on a load of 300A is a 3PH nutral to earh installation?

4 Answers  

---

How relay coordination has to be done? what are the inputs are required for this? Please explain this with calculation method?

0 Answers   Elektrotek,

---

tell me working of air circuit braker.

2 Answers  

---

what should be distance between phase to phase in 415v system?

1 Answers   NTPC,

---

How RTCC panel is working and give single line diagram for RTCC with transformer?

0 Answers   AB Associates,

---

Why earthing transformer used in Distribution Sub-Station?

3 Answers  

---