Interested to Buy Any Domain ? << Click Here >> for more details...
How does ELCB work when exist earth foult? and How does RCCB
work when exist earth foult?
- 1 Answers
- 9286 Views
- I also Faced
- E-Mail Answers
Answer Posted / m.s.srinivasan
Functioning of the RCCB as well as ELCB are the same.
A CT is used to measuer the difference of current in the
circuit being protected. For that all the 3 cores + neutral
of the circuit is passed thro' the CT. For a normal healthy
circuit, difference of the net current will be Zero. Hence
the CT will not sence any current. When the current passing
thro the CT finds a path thro' the some other way ( by
earth ) , an unbalance is created and the CT sences the
unbalance and actuate a trigger to stop the power flow.
The unbalance current over which the RCCB to operate is
given for individual device. Normaly this would be
30ma,100ma,300ma and the selection of the devices is based
on the application.
| Is This Answer Correct ? | 34 Yes | 6 No |
Post New Answer View All Answers
Is there any type of starter for DC motor other than two point,Three point and Four point starters?
what parameters are should nessary for control technic dc drive(in rolling mills)?
Can anybody tell abt concrete encased earthing or grounding?
Why does the radius of armature is less than the radius of pole shoe?
Star Delta Diagram with full description
If breaker is undefined position, first step to do.
i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me
what is the method of earthing of a transformer using electrodes?
1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?
If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.
what happens when series resonance occurs?
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.
i am going to attaned the engineer (disign)iterview at HAL please give me duid line
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
What is the main purpose of c.f.b.c.boiler
