Answer / k.prakashchandra

There can not be earth fault on delta side as there is no
neutral for earthing and the neutral of the primary gets
isolated .It is customary to have delta -star step up
transformer instead of star-delta.

i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

4 Answers  

---

how will protect transformer agint overcurrent protection

6 Answers   MPSEB,

---

what is negative,positive abd zero sequence current explain clearly

1 Answers   Jindal,

---

define main transformer?

7 Answers  

---

What is the phase relationship between the primary and secondary voltages of a transformer?

0 Answers  

---

---

What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,

---

which is best ac or dc

3 Answers  

---

WHY CFL can't made in shape of bulb.

5 Answers  

---

The corona effect is more in a) summer b) winter c) dry weather d) humidity weather

10 Answers   CPCL,

---

WHY 6.6KV MOTORS ARE STAR CONNECTED AND WHY NOT DELTA CONNECTED,

15 Answers   Bhel,

---

what are the industrail measures to overcome ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system? plz reply

3 Answers  

---

what is different between grounding and earthings?

4 Answers  

---