Answer / dayasagar

for star delta starter the thump rule is cable sizing to be 2 X motor KW ie 160 kw motor require 160 sq mm since 160 sq mm is standard size it is better to go for 185 sq mm this rule applies for all star delta motors. here you can go for higher size
for DOL or VFD driven motors 2 time the KW ie 320 sq mm is required since 320 sqmm is not standard size it is better to go for 300 sq mm here you can go at lower size

What is the difference between the relay and the circuit breaker?

0 Answers  

---

is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

0 Answers  

---

how to ctrl motor by use of ac or dc drive.plz explain evdintly

0 Answers  

---

What happen if in three phase 440 v , when you check voltage by testor it glows except one phase and in the same time when you check by multimeter it shows 440 v in any two phase.what will be the reason...

1 Answers   Greatship,

---

power 148kw i need exat cable size in 148 kw in 3phase what size of cable can i used.

3 Answers  

---

What are the effects of adding a zero to a system?

0 Answers  

---

What will happen if 2 phase supply is given to 3 phase motor?

4 Answers   ABC,

---

what is reason in mv breaker the control supply voltage is dc not ac?

1 Answers  

---

how to stop oil leakage in power transformer.

1 Answers   APGenco,

---

what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?

1 Answers  

---

How to calculate the cable size for particular load

2 Answers   Knight Frank,

---

1.what to do if ferquency of any power system continue to decrease ?

5 Answers   NTPC,

---