Answer / bibhas

ELCB is Earth leakage circuit breaker. It is very sensitive.
Even if there exists a minor leakage current, it will
immediately trip. Whereas RCCB is residual current circuit
breaker. It will trip only above the set trip value

Answer / k.prakashchandra

ELCB requires earth connection. Earth wire is taken through
ELCB to the body of the appliance.If there is any leakage
current in the earth wire ,it will trip.4 pole or 2 pole
RCCB requires neutral.It works on the principle that vector
sum of the currents in phases and neutral is zero or current
balancing.If there is any leakage current to the earth it
will be sensed by only phase and not the neutral resulting
in tripping.3 pole RCCB is for a 3 phase load without neutral.

the circuit having same properties in either direction is known as.......

2 Answers  

---

for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

0 Answers   SCCL,

---

What is the equipment used to control the generator output?

4 Answers  

---

can any tell me how to do wiring connection in L&T 3ph 4wire E301 CT operated energy meter, what is P1,P2,P3,P0. M1,M2,M3, L1,L2,L3.

2 Answers   Bhartiya International,

---

identify the components of the tube light and explain how they function???wat is inside the fluroscent tube???how it works???

7 Answers   NTPC, TPL,

---

when a airgap of the induction motor gets larger does it draw more current ??? does it power factor gets lower?

3 Answers  

---

why 1.7Uo for HV cable Hi pot test?IE standard why?

0 Answers   ABB,

---

what is the ranje of HT cabel and LT Cabel.

1 Answers   Sail,

---

Why a ballast and ignitor is required in MH and other lighting fixtures

2 Answers   Future Group,

---

to improve the existing power factor whether capacitors have to be added in series or parallel.and why

3 Answers  

---

why generator is design for lagging P.F(power factor)?

3 Answers   BSES,

---

what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

0 Answers  

---