Answer Posted / 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.

How calculated single phase induction motor req. Capacitor?

1562

---

why h parameter are called as hybrid parameter?

1959

---

give single line diagram of D.G distribution form alternator to main L.T panel?

7549

---

Is a direct shorth ciruit on a branch MCCB in a Low Voltage Switchboard a correct means of tesing the performance for discrimination?

2322

---

What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?

2630

---

Iwould like to know barc interview questions

3213

---

How many double suspension hardware fittings are required on a double circuit transmission tower?

1905

---

What are the advantages of thermal power plant?

1156

---

what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

2087

---

if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .

1652

---

What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

2531

---

How does a digital electronic meter work??????

2031

---

Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????

2745

---

Safety of dry type transformer

1953

---

hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

2946

---