Answer / maddoxx

neutral in sigle phase line is the return path which is normally(off ckt) at 0 v.grounding is done for protection and current flows only during fault.Grounding is done basically on the non current carrying part of the device or system so if there is failure of insulation in motor or device the current also flows in chesis of device. so if we do grounding it flows impedance path) to ground(earth).and thereby protecting device from higher current.
in 3 phase line neutral has no current in balanced cond'n.But has in unbalanced.so this extra current can be bypass by connecting neutral to ground or to the supply neutral(which is also grounded).
"SO NEUTRAL IS A RETURN PATH(1 PHASE) AND GROUNDING IS A BYPASS PATH IN FAULT CONDITION ONLY"

What is the Ohms low calculation

2 Answers  

---

why are the likely reasons for bochholz & pressure relays oprate due to a internal fault but not differential relay ?

2 Answers  

---

What it indicates by 25/41MVA on transformer?

4 Answers  

---



0 Answers   Maples,

---

What is VFD, and how its work

5 Answers  

---

What is thermal relay and how it is works in transformer please explain

2 Answers   Future Group,

---

purpose of breaker contact multiplication relay?

5 Answers   ABB,

---

how can we generate electricity????

6 Answers   Torrent Power,

---

Transformers with dc supply

4 Answers  

---

How to test the thyresitor or SCR by multmeter?

5 Answers   ABB,

---

How a synchronous generator practically work? what is the function of avr(automatic voltage regulator)in synchronous generator?how the connection of avr to the generator made practically?please give me the answer.

6 Answers   Accenture, Heineken,

---

WHY TRANSFORMER RATING IS MENTIONED IN KVA RATHER THAN KW

5 Answers  

---