Answer / sheikh

Vector group of transformer does not matter.
matter is kind of the load of your system.

what is the most probable reason of failure of current transformer?

2 Answers   L&T,

---

There is 15 KVA UPS using for single phase load.And 30 batteries of 12 V, 100 Ah are connected in series. Load is taking 15 A current.What will be the back up power for this UPS on same load?

1 Answers   BS, Dynamic Software,

---

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

4 Answers   Piramal Glass Limited,

---

ELCP USE IN 3 PHASE SUBMERSIBLE PUMP? THEN USE 3 POLE 0R 4 POLE?

4 Answers  

---

Why we call cable rating in SQ.mm.If it is 240 SQ.mm how much the diameter possible?is there any calculation ?

4 Answers  

---

---

Why should The rating of 11 kV DO Fuse is in mulyiple of hundred(200 Amp. 40 Amp, etc) Ampere wheareses the its fuse elemnt has rating in just few Amp (< 12 Amp)? ( Is it jusy beacuse of factor of safty).

1 Answers  

---

Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.

0 Answers   ABB,

---

at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

0 Answers   iGas,

---

what is difference between MCB & MCCB

1 Answers  

---

how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???

0 Answers  

---

What are the differents between Breaker & Contactor?

8 Answers  

---

Do anybody has a design software or tools for the selection and design of electromechanical components???

1 Answers  

---