Interested to Buy Any Domain ? << Click Here >> for more details...
can you give main difference between ELCB And RCCB?
- 38 Answers
- 172903 Views
- MCB Bank, Reliance, Wipro, I also Faced
- E-Mail Answers
Answer Posted / bikash kumar
Difference between ELCB and RCCB
.ELCB is the old name and often refers to voltage operated
devices that are no longer available and it is advised you
replace them if you find one.
•RCCB or RCD is the new name that specifies current
operated (hence the new name to distinguish from voltage
operated).
•The new RCCB is best because it will detect any earth
fault. The voltage type only detects earth faults that flow
back through the main earth wire so this is why they
stopped being used.
•The easy way to tell an old voltage operated trip is to
look for the main earth wire connected through it.
•RCCB will only have the line and neutral connections.
•ELCB is working based on Earth leakage current. But RCCB
is not having sensing or connectivity of Earth, because
fundamentally Phase current is equal to the neutral current
in single phase. That’s why RCCB can trip when the both
currents are deferent and it withstand up to both the
currents are same. Both the neutral and phase currents are
different that means current is flowing through the Earth.
•Finally both are working for same, but the thing is
connectivity is difference.
•RCD does not necessarily require an earth connection
itself (it monitors only the live and neutral).In addition
it detects current flows to earth even in equipment without
an earth of its own.
•This means that an RCD will continue to give shock
protection in equipment that has a faulty earth. It is
these properties that have made the RCD more popular than
its rivals. For example, earth-leakage circuit breakers
(ELCBs) were widely used about ten years ago. These devices
measured the voltage on the earth conductor; if this
voltage was not zero this indicated a current leakage to
earth. The problem is that ELCBs need a sound earth
connection, as does the equipment it protects. As a result,
the use of ELCBs is no longer recommended.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is trip and closing coil in cb? Why need of them
What is tan delta & PPM in transformer? and whats its IS value?
State the types of distortions in amplifier?
I FINISHED MY B.TECH IN EEE . I AM IN NEED OF A GOOD TRAINING INSTITUTE TO DO COURSES .. CAN ANYONE SUGGEST GOOD CENTRES IN TAMILNADU ,BANGALORE ,OTHER AREAS???????
A parallel flow heat exchanger will perform better than a counter flow heat exchanger. State if the statement is true or false.
if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
how net resistance islow in star connection and viseversa in delta connection...? if anybody could explain in detail it wud be helpful.
how to get electrical supervisor competency certificate in gujarat. i did 3 year diploma in electrical
What happen when change order of CT in GIS feeder?
please send me last 5 year interview questions
How to calculate no of EARTH PIT? Describe the formula as per IS standard?
What is ideal IR values for ground and neutral.
HOW TO CALCULATE THE REGULATION OF 100 AND 25 KVA TRANSFORMER
Why ground terminal is used in pot meter 10k ohms
