Answer / mohamed sabry

No, because it can't contain the arc if opened under load
or short circuit.

What is meant by H.R.C fuse?

40 Answers   Gas Projects, GSCE, Taj Group,

---

what is hormonics. how it is generated & what are the problem faced by that.

5 Answers   APC,

---

why transformer neutral and CT Secondary neutral is connected to earth?

3 Answers   NCC,

---

why electronic instruments is more favorable than electrical?

0 Answers  

---

What is the type of feedback used in an op- amp schmitt trigger?

0 Answers  

---

how the speed decreases of a generator in power station if load increases

1 Answers   Tata Power,

---

why middle phase should used for earth fault and other phases used for over current in overcurrent and earth fault relay?

7 Answers   ABB, ONGC,

---

We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

---

transformer 3 ph, 225 kva pri 480v, sec 208v. primary neutral connected to system, is secondary neutral to be grounded and how

1 Answers  

---

1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor

0 Answers  

---

What is induction motor

1 Answers   Indoco Remedies,

---

How many homes can a 500kva transformer supply in S.A

1 Answers  

---