what is a circuit breaker. Weite the types of circuit
breaker.

Answer Posted / reshi

Circuit Breaker is used to isolate the power supply to the
equipment and avoid any damaged to the equipment during
the short circuit or overload.
Circuit breaket are of two types magnetic trip &
adjustable trip type.In adjustable there is the option of
adjusting the breaker to trip intantaneously or taking
short time or taking long time on crossing the particular
values.There are many types of MV Circuit Breakers.
1.Air Circuit Breakers
2.Vaccum Circuit Breaker
3.Oil Circuit Breakers

and in LV :
1. MCCB moulded case circuit breaker
2. MCB miniature circuit breaker
3. ELCB earth leakage circuit breaker.

Is This Answer Correct ?    46 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the ground fault relay,which purpose it will be use,clearly tell me plz

1589


why the neutral point in connnection oscillates?

1821


WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

1727


Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

3851


sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls

1788






how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.

1760


Define open loop control system.

686


how we decide wire gauge for ac or dc coil and what is the basic diff. B/w these two coil?

1675


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?

2227


What is cathode ray oscilloscope (cro)?

682


Leakage current,un balance current which relay using for high voltage transmission?

1643


low frequency protection why recomend?

1825


Why GRR starts from 60% of motor speed why not less than 60%?

761


why should the lowest unit of a testing transformer ( cascaded transformer ) have higher power rating??

1884


How to know th details about an electrical Drawing ? Please mention the easy method.

2005