Answer / k.prakashchandra

It is used to influence the electric field within the
insulation layer.The semicon layer has to removed at the
termination at least 6-9 inches below the lugs ,as
otherwise there will be short circuit along this layer.As
this layer is not doped, you have to treat it as a conductor.

Answer / paramesha r l

Purpose of semiconducting layer is to maintain uniform distribution of Poynting vector i.e., P=ExH in insulator or otherwise power P=EXH densely concentrated at insulation point where two phase are comes in contact.

what Semiconducting layer does is equipotential over outer surface of insulating medium as it is like a free space.
Semiconducting layer needed to remove at termination i.e, 35 to 50 cm from lugs point.
If semiconducting layer not removed at termination leakage current flows between conductor to semiconducting which is hardly a distance of 5mm at eventually it fails.

Answer / anil

The purpose of Semi conducting tape is only to transmit the
heat from insulation to cu. tape over it. this heat is
produced in Core due to flow of current. Further, to
TERMINATE THE CABLES, ALL CONDUCTING AND SEMICONDUCTING TAPE
IS REMOVED FROM INSULATION AS current in cable can also come
into insulation and it may be damage the cable, dangerous to
persons working.

Answer / marlo

Usually HV cable has a semi conducting, one purpose it to protect your connected load in severe damage and the system as well. In the case of unexpected faults along with this cable,any small leakage current detected will trip its protection.

There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

4 Answers  

---

In A.C systems, fuse is placed in phase-in order to disconnect the circuit during faulty condition. But, what is the reason for putting "LINK" in neutral istead of connecting through (same) wire.

3 Answers  

---

Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?

2 Answers  

---

How can we parallel two transformer with vector gorup YNd11 and YNd1?How is connection two transformer GT?

3 Answers  

---

Dear all, i completed M.E(Power Electronics & Drives) 2011 passed out having 78% so i need job in core side but i don't know how can i receive the calls from electrical companies and i uploaded my CV in naukri, times jobs etc.. In that iam not recieved any mails from good companies so give me best procedure plzzzzzzzzzzzzzzzzzzzzzzzz..... Thanks, K.Linga Reddy Email-id:-lingareddykmthm@gmail.com Ph no:-08015402078

1 Answers  

---

different between highvoltage & lowvoltage source

5 Answers  

---

at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

0 Answers  

---

In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree

1 Answers  

---

Which Class insulation is prefered for the sandwich Busducts ? Why?

0 Answers  

---

Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

0 Answers   VECL,

---

what are the sections in a high voltage system(eg:incomer,buscoupler,isolator

1 Answers   IGL, L&T,

---

In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?

0 Answers  

---