Advantage of earthing transformer

2 Answers   EID Parry,

---

What is the function of trip neutral close switch?

11 Answers  

---

The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

0 Answers   Ispat,

---

Why the underground cables will Punchar? or what is the reason to burst the underground cables?

1 Answers  

---

We have a 12MW power plant & we inject 5-6MW power to Orissa GRID. For this we have a 33KV/11KV switch yard having 12.5MVA power transformer. Some times we draw power during emergency. It is observed that during Export or Import for load less than 500Kw the power factor is decreasing to 0.3 . This is happening only during export or import. During island condition TG power factor OK.Our capacitor bank is provided with our Power plant auxilliary load. Please suggest how I can we improve our power factor during low load (GRID).

3 Answers  

---

what diff. between earth nd neutral?

3 Answers   NTPC,

---

How to calculat the size of copper& aluminium wire ?

5 Answers   Hindalco, IOCL,

---

what is FS cable?? Difference between FS and FRLS??

1 Answers   Multivista Global,

---

neutral,ground & earth different b/w

2 Answers  

---

in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

0 Answers   apspdcl,

---

why the check zone and main zone are used for Busbar Protn. scheem?

0 Answers  

---

1) How to calculate battery backup for ups as well as solar with complete formula elaborately......

2 Answers  

---