Answer / k.prakashchandra

You can not use metering ct as the it does not measure
current beyond 150% 0f rated.You can connect terminals of
diff relay in series with back-up relay.

How i can calculate the cable size for given load,there is any formula,for 3 phase and single phase

2 Answers   Prescient Technologies,

---

is it necessary for 200 kva transformer to have marshaling box and cu plate earthing for neutral

1 Answers   Blue Star,

---

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

0 Answers  

---

In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

0 Answers   ITI,

---

What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

0 Answers   Indeco,

---

Why have to use copper cable for local isolator to motor ?

0 Answers  

---

what are the reasons for overheating in electrical machines?

3 Answers  

---

ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit

4 Answers  

---

What happened ,If 3 phase clearance not maintained in 33KV Line,11KV LIne etc?

0 Answers  

---

WHAT IS THE DIFFERENCE B/W THREE POINT STARTER AND FOUR POINT STARTER

1 Answers  

---

We have energy meter of ct ratio 200/5amp and installed cut having ct ratio 100/5 amp what is final MF?

2 Answers  

---

can we correct the p.f.of ac generator?

2 Answers   APGenco,

---