Answer / s.k.

For power TR's : 15,20,30,45,75 MVA , they have 21 taps
then the 2dry wdg. should meets the required kV
so , when the tap at the lower step( tap 1), it results the
lower kV at 2dry.

how to find out three phase motr kw with out name plate..

2 Answers  

---

what is the difference in MCB, MCCB, RCCB, ELCB, & MPCB (motor protection circuit bracker)

12 Answers   Afcons, Bhel, CIHSR, DCS, IOCL, L&T, Lupin, Siemens,

---

I need a 33/690V Dry type transformer.How to select IP class for this transformer.This will be an outdoor transformer located in a highly polluted environment.

3 Answers  

---

UG cable sizes were specified in sqmm. But practically its not coming to mesure. What's the reason for that? And how they specify the size of the cable?

0 Answers  

---

The cable area of cross section is 185 sq mm. How to convert this to the diameter.

7 Answers   Syscon,

---

What is the Difference Between choke & ballast

3 Answers   ABB, ICS Integrated Computer Solutions,

---

At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

5 Answers   ME,

---

What is NDR in HT capacitor panels.

2 Answers  

---

What type of input will the OLTC indicator will accept or what type of output the OLTC will produce to monitor it's position at remote location.

1 Answers   amps,

---

control & auxilary circuits used for circuir breakers

0 Answers  

---

when turbine trips generator will becomes induction motor or synchronous motor?

4 Answers   JSW,

---

how is working the APFC when varying the load?

1 Answers  

---