Answer / somnath sharma

The use of earth switches is to send any trapped charge in the line into ground after the line is switched off.
Mainly what happens, when the line is switched off, some charges remain trapped in line due to their own capacity and also due to influence of side by X-line. This trapped charge is dangerous if someone goes for maintenance of that very line. So it is very much required to neutralise that much charge and here comes the use of earth switches.

Answer / venky_eee07

earth switches used in substation . in that when isolator
OPEN condition earth switch is CLOSED. here any induction
that passes thro' earth switch to ground.when isolator in
CLOSED condition Earth switch should be Open

Answer / mohammad

Earthing Switch is necessary to earth the conducting parts
before maintenance and also to provide deliberate
short-current while testing.This enables various tests to be
performed on the Switchgear or item of equipment, such as
testing the current Transformer of measuring the operating
time of breakers, without having to open the enclosure.
During normal operation the insulation is bypassed by a
short-circuit-proof link.

what is DG synchronization panel plz explain the working!!!!!!!

12 Answers   Kirloskar, Lanco, MPS Techologies, Sedemac,

---

How to calculate the KA rating for a circuit breaker if we know the KVA rating of the generator feeding it?

2 Answers  

---

why should series motor be started with load and shunt motor should be started without load??????

7 Answers  

---

What we mean by vintage of an engine+Generator?

0 Answers  

---

What is the problem of internal failure in ship engine telegraph system norcontrol?

0 Answers   SAR,

---

WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

0 Answers   L&T,

---

What is the speed of 3 phase IM(Induction motor) at no load? How will the Motor meet the increased load(Explain through fundamental)?

2 Answers  

---

What is the black star?

2 Answers  

---

What is mean by INRUSH CURRENT?

8 Answers  

---

why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

0 Answers  

---

Please send specifications for 1000KVA dry type transformer or where I can get the specifications?

2 Answers   PSU,

---

Why does amplifier gain reduce?

0 Answers  

---