Answer / raghavendran

NGr can be calculated by dividing the system voltage by the
allowable let through current from the resister to earrth.
say the system voltage is 600 volts and the allowable let
through current is 25A then the NGR value could be 600/25 =
24ohms.

low voltage means how much voltage? extra low voltage means how much voltage? medium voltage means hos much voltage? high voltage means how much voltage? Ex: low voltage - 1volt to 240volt like this

3 Answers  

---

what is phase shifting transformer.

2 Answers  

---

what is difference between 3.5 core and 4 core cable

5 Answers   Havells,

---

how the grounding[earting] is achieved on ships.

1 Answers  

---

Electrical Diagram of Electric Arc Furance from transformer to Furances

1 Answers  

---

what is the effect of leading power factor

3 Answers   Aurobindo, R L Steels and Energy,

---

what is the principle of motor

6 Answers  

---

What happened when voltage will half value of current ...

0 Answers   SCL,

---

What are the different sign conventions used in electric circuits?

0 Answers  

---

How will be the single line diagram of series trip HT breaker? how it works?

0 Answers   HAL,

---

if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

0 Answers  

---

What are approaches to tackle sedimentation problem of reservoir?

0 Answers  

---