Answer Posted / kalirajan.n

***SUPPOSE WE USE COPPER CONDUCTOR AND WE ALLOW A MAXIMUM OF
5V MAX. VOLTAGE DROP:

5= 2*12*15*230/CSA

CSA= 82800/5

CSA= 16560 CM

FROM COMMERCIAL REFERRENCES:

15560 CM IS CLOSEST TO 16510 CM WHICH IS #8 COPPER OR 8 SQMM
WIRE.

NOTE:

1. IN THIS CASE A MAXIMUM OF 5 VOLTS WAS CONSIDERED IN THE
CALCULATION.

2. THIS CALCULATION IS NOT VALID FOR LARGE MOTORS. BECAUSE
MOTORS DRAWS A MAXIMUM OF 7OO% TIMES ITS FULL LOAD TORQUE
DEPENDING ON THE MOTOR CONTROL STARTING METHODS USED BY THE
DESIGNING ENGINEER.

What is tan delta & PPM in transformer? and whats its IS value?

2234

---

what is the minimum voltage require to injure our body?

7113

---

State and define norton’s theorem?

1302

---

what is the differences between microprocessor and general purpose computer

2241

---

What is difference between start imitation and start interlock for 3 phase motor protection ?

2308

---

What cmos is and its benefits?

1296

---

What is earth?

2503

---

How much pf maintan in dg set in 6o% load,when Dg runnig Neutaal Earthing removed what happen.

2040

---

what is the standard duration after failure EB power

1905

---

How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

1723

---

from generating station If 400v LT line length is 1000m how much voltage is drop and how do i calculate it? which cable will be use for this line?

2092

---

what is meant by brushed alternator & its working principle ?

1974

---

Define filter?

1177

---

quantizer means?

1994

---

How work of capacitor in dc supply...???

1670

---