Answer / sanjay kumar

Earth leakage circuit breaker(ELCB) trips during leakage of
current from ckt. to earth.

Residual current circuit breaker(RCCB) will trip if
algebric sum of current is not be zero.

Answer / kulvinder singh, nit kurukshet

ELCB is used tirip the breaker when there is any leakage
of live current to the earth point.

RCCB-it detects the electric current is not balanced
between the energised conductor and return neutral
conductor.Such an imbalance is also caused if any human
body comes in contact with live conductor.

Answer / anoop k.liz

ELCB- ELCB will be tripped on a leakage of current from phase to earth.
RCCB- MCB+ELCB= RCCB. It will tripped on both fault current or high current and earth leakage current.

Answer / sunil kumar rakam

elcb and rccb

Answer / sandy

ELCB OPERATORS WHEN THERE IS LEAKAGE FROM PHASE TO EARTH &
RCCB OPERATORS WHEN THERE IS LEAKAGE BETWEEN TWO PHASES.

Answer / pavi

Elcb is earth leakege circuite breaker rccb is earth leakage circuite breaker

Why the motor take high starting current for long time(10- 15 sec) which is connected to Blower as compaire with a motor which is connected with pump with same rating?

2 Answers  

HOW GENERATING END VOLTAGE LEVEL (6.6 KV/ 10.5 KV/ 11 KV/ 13.5 KV) DECIDED IN POWER PLANT. ON WHAT FACTORS THE GENERATING END VOLTAGE DECIDED, & WHAT IS THE CALCULATION USED FOR THIS.

3 Answers   Areva, Cognizant,

how an electron flow in a wire. can it flow like a car running on the road?

2 Answers  

What is short circuit analysis of electrical networks?What are the procedures to be followed for its calculation?

2 Answers   DLF,

Where to use pt and where to use CVT

2 Answers  

An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

What is the resistance of human body from head to toe?

10 Answers   Bhel, Getco, Infosys,

can we use HPSV LAMP in HPMV LAMP fixture ?and viseversa.

5 Answers   OPS,

Can anyone send details regarding motor protection relays ? their manuals please ?

1 Answers  

What is the typical power circuit configuration of a VVVF Drive ?

1 Answers  

What are the advantages and disadvantages of negative feed back?

0 Answers  

Why Neutral Isolation is required?

0 Answers