Answer / k.prakashchandra

To remove the induced voltage of primary due to capacitance

what is stepping motor and where can use in electrical installation.

3 Answers  

---

What is the function of Lightning Arrester & Wavetrap in Power system ??

18 Answers   ABB, Bhel, Energy Infratech, Infosys, NTPC,

---

What are the special protection given for high capacity Motor, more then 10mw

2 Answers  

---

what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

0 Answers  

---

When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

0 Answers  

---

which metal use as a electrical shunt?

2 Answers  

---

Why the resistance grounding (NGR) is better than Solid grounding?

5 Answers  

---

Why in earthing, the earthing plate is put in vertical position? and further what is soft coke that is used in earthing?

3 Answers   Wipro,

---

state the working of discharge lamp?

0 Answers  

---

For 132 KV line, PT or CVT which is prefered for measuring & protection? is there any IS or IEE standard available?

1 Answers  

---

We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 Answers  

---

why the transformers are rated in kv not kw?

6 Answers   L&T,

---