Answer / a.p.nanjappa

Load current is 300A. The equipment shall withstand the
starting current -which is around -5-8xIn.It is preferable
to select 1ooo-1200A/1A OR 5A.
WE ADOPT THIS THUMB RULE for our protection setting& co-
ordination.

Answer / wareagle

600/5 would work nicely. One on each phase.

Answer / p_mehboobkhan

i want answer...

Answer / a.p.nanjappa

The neutral is a point in power transformer or in motor
connection where all phases are connected.In this point
voltage is zero. when you connect thisoint to earth, the
fault current or capacitance circulating current flows to
earth.
when a fault occurs , current is high.Therefore,CT ratio
should be 1000-1200/5 or 1A.

It is usually upto designer or protection device supplier.

what are the types of 3-ph. generator protection

2 Answers  

---

When to use Oil Transformer type and When to use Dry type? What is the difference between both?

2 Answers   ABC,

---

compressor compresses air means exactly what happens?

2 Answers  

---

What is a diode?

0 Answers  

---

what is the calculation method to design core and winding of a 200kva 3phase distribution transformer?

0 Answers  

---

In star and delta connected systems , for driving power and as well as light load which one you will preferred?

2 Answers   Aramco, IBM,

---

how to calculate bus-bar sizes? (copper bus-bars)

2 Answers  

---

Wy transformer ratings are in multiple of 11 always?

2 Answers  

---

A genarator is connected through a 20MVA ,13.8/138 KV stepdown transformer to a transmission line. at the reciving end of the line a load is supplied through a step down transformer of 10MVA,138/69 KV rating .A 0.72 PU load evaluated on load side transformer ratings as base values ,is supplied from the above system for system base values of 10 MVA and 69 KV in load circuit the value of the load in generator circuit will be ...........

1 Answers  

---

State the other types of Air Conditioners?

0 Answers   HSL,

---

what is the meaning of Air condition "TON"

3 Answers  

---

Sir 33kva 2 transformer load 900 amp calc 1800 amp mana jayega

0 Answers   Classic Infotech,

---