Answer Posted / guest

Stepdown transformer(HT/LT) generaly used for distribution purpose so secondary side star is necessary and to increase voltage ratio primary side delta is necessary ie. in delta we get line voltage which is 1.732 time of phase voltage (star voltag) therefore less turn required in secondary side.

For RCD (Residual current device) Icu is defined. How i can find Ics for them?

2005

---

How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

2154

---

1.What will be stored in online ups EPROM IC?

1989

---

what are the protecyion of transformer & generators

1910

---

1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.

2139

---

In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

4116

---

what is the transformer rush current?

2019

---

can some one clearly explain why -48 volt DC use in telecom site????

1627

---

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

2029

---

why the protection turbo generators is most complex?

1972

---

what is the isolation transformer. what is the isolator?

2012

---

Where can i get practical knowledge of solar system?

1400

---

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

2167

---

If we connect a motor and generator together (I mean that the generator gives the motor electricity and the motor gives the generator movement) regardless the losses. Will the generator still generate and the motor still move?

2214

---

In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

1837

---