Interested to Buy Any Domain ? << Click Here >> for more details...
can you give main difference between ELCB And RCCB?
- 38 Answers
- 171707 Views
- MCB Bank, Reliance, Wipro, I also Faced
- E-Mail Answers
Answer Posted / ankur saharia
The term ELCB stands for Earth Leakage Circuit breaker .whenever the leakage current from any live part to ground exceeds a particular value, then the trip coil of ELCB operate for further disconnection of the live part. Generally the trip coil of ELCB is connected in between the non- conducting part of any equipment (Insulation part) and ground. The current setting of a ELCB is in the range of 65mA, 30mSec & must be connected for those loads whose rating exceeds 5KW.
The term RCCB stands for Residual Current Circuit Breaker. The connection of RCCB is always followed by CBCT(Core Balance Current Transformer) .this is because the residual current is sensed by only CBCT.For a 3-phase system, under balanced condition, sum of current at all the phase is zero.i.e. Ia +Ib+Ic =0.but when in any phase comes in contact with earth, then the three phase system is no longer in balance.i.e. Ia+Ib+Ic ≠0(or equal to residual current).this current is sensed by CBCT Secondary & when it exceeds the set value, then is operate & remove that faulty part.
| Is This Answer Correct ? | 11 Yes | 2 No |
Post New Answer View All Answers
What is EMC filter in VVVF Drive ?
i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?
What is the kiosk parts, about them and their functions ? If anybody have some PDFs files or details about this plz send it on tawhidfaisal@Yahoo.com
which protection function should measure RMS value of current&DFT value of current?
what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....
What are the types of class b amplifier?
WHAT WOULD BE THE FORMULA OF WIRE GAUGE FOR A FULL LOAD CURRENT
What is nichols chart?
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
Give some differences between open loop and closed loop control systems.
what is negative d.c. voltage, why this voltage is used in base transciever station.
if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?
if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side
sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls
In siemens PLC, why do we want to move the data ?
