Answer / guru

ELCB - Earth Leakage Circuit Breaker - Senses the leakage
current between earth and phase .

RCCB - Residual Current Circuit breaker - Senses the total
flow of current and compare with the return current through
Neutral and functions on the difference of this current

ELCB and RCCB are available in current sensing capcity of
30, 100, 300 mA and in three phases and Single Phase.

Currently RCCB is considered as superior to ELCB

MCB - Miniature Circuit breaker - Only functions on overload

Answer / ravi kumar indukuri

ELCB Means Earth Leakage Circuit Breaker, It will sense any
leakage between phases and earth also between neutral and
earth. sensitivity of ELCB calculated in milli amps and
available in 10,30,100,300 milli amps ranges, both in
single phase and triple phase. a triple phase ELCB can be
used for single phase.

MCB Means Miniature Circuit Breaker It will sense any
leakage between phases and to neutral, tripping current
will be in Kiloamps

why do we connect droop ct{in gensets}in y_phase only

2 Answers  

---

why do we use 25kv supply for traction purpose?

0 Answers   Bhel,

---

what is meant by boost charge in batteries

1 Answers   MTS,

---

what is the distance between two overhead lines

1 Answers   Aurobindo,

---

Merz-Price circulating current principles is more suitable for

1 Answers   Student,

---

if 15 kv is grounding directly what will happen?

5 Answers  

---

How much ampere can withstand for 2sq mm c able?

2 Answers  

---

What is the feedback in the control system?

0 Answers  

---

by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

0 Answers   HP,

---

In a star-star connected h.t transformer why we use NGR on the secondary (l.t)side.

3 Answers   Star, TATA,

---

what is the meaning of knee point in current transformer and how to calculate?

2 Answers  

---

what is recovery voltage & transient voltage ?

1 Answers   Bhel,

---