Answer / manikandan

in 3ph 415 vac 4wire system the neutral used for 1ph electrical equipment power supply. i.e. nominal voltage 230V 1 ph can be obtained between any one phase and the neutral.

Answer / siva naik

As to the domestic loads i.e lightning loads required the
neutral bcz of This High voltage supply its being connected
with the distribution substations here this voltage is being
step down low voltage by using transformer. Normally the
power transformer primary is formed in delta connection to
avoid the leakage currents and its secondary is formed in
star connection. as required above with the same.
Neutral & Earthing are tied together. neutral its carrying
charging current also acts as return path

Answer / wafiiq

We use 3PH 4 Wire system for secondary side (LV) side of
distribution transformers. The first 3 wires are the three
phases while the 4th wire is the neutral. Grounding the
neutral, a process known as system earthing, will allow
single phase users to have single phase supply from the
distribution transformer, i.e. nominal voltage 230V can be
obtained between any one phase and the neutral. Thus, by
grounding the neutral, we are making sure that it remains
at 0V, i.e. at the earth potential. As for 400V, is simply
the line voltage, between any two phases.

Answer / narsing

Its depends on some where customer consumption

Answer / narsing

Its depends on some where customer consumption

1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 Answers  

---

Why the moulded plug comes with domestic appliances instead of assembled plug like anchor, Vinay 5/15 A.

0 Answers  

---

Is motorized MCCB required rotatory handle

1 Answers  

---

why earth wire is needed in a wiring system

1 Answers  

---

What is the importance of setting TSM & PSM?

2 Answers  

---

---

what percent do you derate your copper wire when you change from copper buss to copper wire

0 Answers   Gerdau,

---

what is split phase ac system?

3 Answers   AMIE,

---

for selection of transformer we will considering 5 to 6 times of starting current of higher rating motor connected to secondary side. according to process wise we will start the motors gradually suppose if we will start 15 to 20 motors at a time wat will happen?

1 Answers  

---

Why is transformer a machine

1 Answers   Grasim,

---

What are differences between Voltage, EMF & Potential difference ?

0 Answers  

---

what is meant by lagging & leading current

1 Answers   TATA,

---

We store the d.c supply...then why can't we store A.c supply???

4 Answers  

---