Answer / ramniveth

the usual procedure for transmission is star to delta

for ex: 220KV/33KV
if they transmit 33KV then 33KV will be in star side and
vice versa

in this case say a delta is transmitted and gets an earth
fault .Zero sequence current will be flowing only in the
transformer .
fault current of phase which gets earthed with earth will
be almost zero .because no return path .
voltage becomes zero for the fault phase and the other two
healthy phases voltage gets root three times incresed which
may affect the whole system

Why do we avoid electrical conduits in floors at apartments?

0 Answers  

---

i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

0 Answers   Sabre,

---

WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

0 Answers   ACC,

---

I need to compare the energy consumption of an industrial machine before and after improving. Shall I compare the apparent power or the active power? I know usually factories use compensated capacitors (or other similar components) to compensate the reactive power, so if I use the apparent power, it's not the real power consumed.

2 Answers  

---

what is the voltage level which is used in transformer short circuit test

1 Answers  

---

How the CT and PT ratings are calculated

5 Answers  

---

1)how many types of earth? 2)how many types of megger and how to select that range? how much time taken for megger calibration( we r using megger)

1 Answers  

---

how determine base of given number like 302/20=12.1

2 Answers  

---

DIFFERNCE BETWEEN DCS AND PLC? HOW IT WORKS?

0 Answers   Essar,

---

Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

0 Answers   India Cements,

---

in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

0 Answers  

---

what is skin effect and corona discharge ?

4 Answers   Asian Paints,

---