Answer Posted / v.balakrishnan,shj

Circuit breaker is used to break the power supply from
loads like switch, but it also protects loads from over
current, short circuit and earth fault.
Types of Circuit breakers as follows:-
MV
1.Air Circuit Breaker (ACB)
2.Vaccum Circuit Breaker (VCB)
3.Oil Circuit Breaker
4.SF6 Circuit Breaker
LV
1.Air Circuit Breaker (ACB)
2.Moulded Case Circuit Breaker (MCCB)
3.Earth Leakage Circuit Breaker (ELCB)
4.Miniature Circuit Breaker (MCB)
5.Motor Protection Circuit Breaker (MPCB)

(by,V.Balakrishnan,Shj,050-8847343)

HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER

1704

---

Maintenance of transformer???

1800

---

I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

1832

---

Make a list observation on Transformer?

1932

---

how will calculate the safe starting current of 3-phase squirrel cage induction motor?

1438

---

---

What current flows in the transformer primary when its secondary is open?

632

---

How to Preparation of online test

1070

---

Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1307

---

Where servomechanism is used?

630

---

wish of these transformer uses oil?

1161

---

for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

1603

---

How isolater function when installed inelectrical 440V wiring

1695

---

block diagram of 2 ups system connected in hot stand by mode?

7484

---

Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??

1205

---

how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)

1625

---