Answer / me

Greetings all,

iam working in an out door lighting design for our plant
and i calculated the total watt needed (sum of all lights)
= 53 kw, 220 volt

our power supply is 480V

so, I chosed a 75 KVA transformer dry type 480/220-127 V 3
phase 60 Hz

cable size from feeder to transformer primary = 50 mm2 (1/0
AWG)

cable size from transformer secondary to distribution panel
board = 125 mm2 (250 MCM)

distribution panel board main breacker = 250 A

So, are my calculations ok ? any changes or suggestions ?

thanks in advance

What is the Difference Between MCCB & ACB & VCB

3 Answers  

---

what is the difference between LATCH and FLIP FLOP

4 Answers   Wipro,

---

what is the difference between induction and synchronous motor?explain in simple words?why 3 phase motor is given preference over single phase motor.

10 Answers  

---

formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

0 Answers  

---

freuency meter

1 Answers  

---

Why distribution transformer secondary voltage is 0.433kV instead of 0.415kV.all other switchgear rating are 415 volt??

3 Answers  

---

what is the relation between Sq mm of wire and its current carrying capacity?

5 Answers   Finolex,

---

what is meant by phase transformation ratio in induction motors?

2 Answers  

---

Is only insulation the difference between High voltage and Medium voltage cable?

1 Answers  

---

Why Phase to Neutral get spark

2 Answers  

---

calculation of knee point voltage of current transformer?

2 Answers   TATA,

---

What are the solutions for avioding sulfide formation at bimetalic (Copper &Aluminium)overhead joints?

2 Answers   HAL,

---