Answer / ankitrakholiya46

It is <3 ohms for GI&
<1 ohm for CU

Answer / k.prakashchandra

For 33KV(minimum)-5 ohm,66-2,110 to 400-1 and gen stations-0.5.

Answer / senthil kumar

Individual < 5 ohms
Grid < 1 ohms

Answer / yogesh nawade

according to NES(US), the value of earth resistance should
be 25 ohm. For efficient system earth resistance value
should be minimum as possible as.

Can we use the 60 HZ transformer/rectifier/Motors/Coils in 50 HZ? if not so, why?

3 Answers  

---

why d.c produces corrosion

0 Answers  

---

This is about the recent problem that we have faced in our project site. We have 6/7.5 MVA. 66/11kV three phase star - star power transformer. The neutral was solidly connected to the earthing mat. But because of high resistance of earthing mat (130 ohm on LV and 180 ohm on HV), one day LV side neutral earthing conductor melted and we had a huge damage. Can any one plz tell me what might happen when we connect power transformer neutral to the earthing mat which has high resistance (>100 ohm ) ?????

2 Answers  

---

What is the battery voltage limit

3 Answers  

---

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION?

5 Answers   L&T,

---

---

how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.

0 Answers  

---

Why the pointer of earthing of 3 pin top is made thick and long compared to the phase and neutral pin ?

3 Answers   Sanima Hydro Power,

---

how can we Increase the Value Of Frequency in electric circuits

0 Answers   HMK,

---

how will you find out the fuse failure by remote operation?

1 Answers  

---

Can you explain about pole discrepancy scheme

0 Answers   NCC,

---

what is the current limit of lighting arrester ?

1 Answers   ABB,

---

What is the difference between MCB & MCCB, Where it can be used,

22 Answers   ACB Group, Badve, Bajaj Electricals, Hensel, Siemens, SR,

---