How does MCB operate without relay..?

Answer Posted / sennapparajan

First question itself wrong.MCB contains small relay
mechanism and also a coil.when current flow through coil
beyong the limit the coil will act the mechanish and trips.

Is This Answer Correct ?    12 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in

1577


how to calculate distance between busbar supporters for LT panel, what are the factors influencing in this design

4709


How to see the inductance in a transmission lines

1675


Explain about retrofitting of machine tool.

1488


What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

1727






Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

1605


If rotor works in clock wise what happens

1454


What do you mean by dependent and independent voltage sources?

607


Define phase lag and phase lead?

647


Installation method of self treated earth electrode.

1489


in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.

1846


What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

1528


How you give clearance to a spare feeder.

1225


why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.

1525


Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.

1306