Answer / k.sri405

if there is two bus bar and simple breaker is used than
there will be need of one transfer bus in case of any
failure of one bus. But if one and half circuit breaker is
used than there is no need of transfer bus because if one
bus gets fail than there will be no interruption of power .

Answer / bala_vlsi

i think u question is what is the different between 4p and
tpn Breaker . if you want isolate the supply inculding
netural you will consider 4P othervise tpn will be enough .

Will The Rated Capacity of 20 MVA ,220/6.6 KV, ONAN cooling Power Tranformer be increased up to 25 MVA with respect to its %Impedence by ONAF cooling with same rating..?

2 Answers   Ambuja,

---

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

0 Answers   Cadsys,

---

Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.

0 Answers   DT Technologies,

---

why electric shock due to dc is dangerous than that of ac

44 Answers  

---

What is the black star?

2 Answers  

---

how to claculate earth strip size for 1500kVA transformer for neutral and body

4 Answers  

---

what is difference between inductive and reactiveload?

5 Answers   ONGC,

---

If the rated speed of a d.c. Shunt motor is1440 r.p.m, which method of speed control would you suggested to obtain a speed of 1500 r.p.m?

0 Answers  

---

What is the PIU.

1 Answers   Jindal,

---

WHY TERTIARY OF POWER TRANSFORMERS IS LOADED WITH EQUIPMENTS LIKE CT,PT,ISOLATOR AND CB

0 Answers  

---

Why the rotor winding is short circuited of induction motor

1 Answers  

---

What are the disadvantges of leading power factor

5 Answers  

---