Answer / sudhakar

For Example: if u take an powerica genrator capacity of 1500 kva

max power we can use the formula is

p= 1500 x 0.8
= 1200 kw
caluculate curent carying capacity:

I= 1200 x 1000 / 1.732x0.8x415v
= 2066 Amps

for copper cable take 1sq.mm= 4 amps
for aluminum cable take 1sq.mm = 2.5 amps

Full form of bdv test?

2 Answers   Hi Tech Transpower,

---

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq.mm ? with formulas ?

12 Answers   Bajaj, Eagle, Godawari Power and Ispat, Havells, L&T, Mascot, Polycab, SGML, Sterling Wilson,

---

Comparing to AC transmission, corona & R in DC transmission is……. a) lower b) higher c) same

3 Answers  

---

What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

0 Answers   Hira Group,

---

how to control dc motor?

0 Answers  

---

what is the procedure for erection of a transformer

1 Answers   TCE,

---

can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

0 Answers   RD Square,

---

is any body explain me why return current in three phase power system is less then in a red, yellow, blue phases??? as we know Ir+Iy+Ib=In then why nutral wire has less then phase current????

2 Answers   Bhel, DRIEMS,

---

Whether the vacuum contactor requires Short circuit protection?If No,why?

0 Answers   Reliance,

---

how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)

0 Answers  

---

i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

0 Answers  

---

difference between semiconductor & conductor & insulator?

0 Answers  

---