Answer / satish a

RCCB ( Residual current circuit breaker )provides protection
against Earth fault/leakage current and isolation of the circuit

Answer / ankush miglani 09718151073

rccb basicaly works when there is sm difference in i/p and
o/p current
it is an advanced version of elcb
mostly it is used in 3 no.s i.e. 1 for each phase
for single phase supply rcbo is used

it provides protection from earth leakage

Can a generator runs after getting 1st stator earth fault.

0 Answers  

---

Why DC excitation is used for alternators? Why cant it be AC?

35 Answers   ABB, Ace Info, Alstom, Shalivahana Power,

---

What is the functaion of IGBT in UPS system?

1 Answers  

---

Differentiate between induced emf and self inductance?

0 Answers  

---

what is the minimum requirement gigaohms for the insulation test using 5kv in 300mm xlpe cable

0 Answers  

---

what are the types of control systems to control the speed of the motor??

1 Answers  

---

hi i have a 400kva transformer i want to know the test i can use to check on it thx

1 Answers  

---

How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

0 Answers  

---

in 50 mw generator if field is open in full load running condition what happen and for protection which relay used?

5 Answers   century,

---

how to measure dc earth leakage current?

0 Answers  

---

which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor

0 Answers  

---

Detailed working of a diesel generator set ?

1 Answers   Airtel, Honda, Kirloskar,

---