What is the difference between MPCB and OLR?
Answers were Sorted based on User's Feedback
Answer / vinod.c
MPCB is the Motor protected circuit Breaker.
OLR is the over load Relay
Is This Answer Correct ? | 79 Yes | 30 No |
Answer / satish m
As mentioned in above answers the abbrivation is correct.
The main difference is MPCB is the combination of contactor
and OLR, it having in built OLR.
OLR- it is an element it is connected to the output of the
contactor to protect the motor.
Is This Answer Correct ? | 48 Yes | 5 No |
Answer / sachin
MPCB is device which has inbuilt OLR+Short circuit
connected to Trip coil.
In event of fault like oveload OLR coil will sense and give
command to trip coil to trip.
In event of Short circuit fault SC coil will energise
inside MPCB and trip circuit breaker.
In case of OLR over load relay, its only a primary device
which senses only over loads.We need to connect contactor
to break the circuit.
Is This Answer Correct ? | 44 Yes | 3 No |
Answer / nithyanandam
Mr. Vinoth everyone know that MPCB is Motor protection
circuit breaker and OLR is Over load relay.
What is the difference between them.
OLR break the circuit and MPCB also break the circuit.
Please tell me difference between these two things
Is This Answer Correct ? | 28 Yes | 5 No |
Answer / murugesh
OLR is the relay which senses the overload current i.e more than 100% of the motor capcity, whereas MPCB breaks the circuit during shortcircuit i.e current in the range of 5 to 10 times the rated current.
Is This Answer Correct ? | 18 Yes | 3 No |
hi. the olr and mpcb both are the protecting devices. but
the olr senses the current of winding capacity. means the
maximum current which does not cause the winding
insulation.it always connected in the starter.
but the mpcb sense the over current by means of load. the
phase to phase short, and the dead short are sensed by the mpcb.
Is This Answer Correct ? | 9 Yes | 3 No |
Answer / nithyanandam
Mr. Satish thank you for your answer.
In an Interview I'm also told the same answer. But the
Interviewer asked, "You are saying The difference with
cosidering the circuit connection only. Please tell me
difference with considering Over load current and short
circuit current. This is the major difference between them".
I'm really don't Know answer untill now. Please tell me the
answer immediately.
Is This Answer Correct ? | 7 Yes | 2 No |
Answer / ravikumar
OLR - OVERLOAD RELAY
MPCB- MOTOR PROTECTION CIRCUIT BREAKER
IF SHORT CIRCUIT IS OCCURED IN CIRCUITS ,
OLR - MELT THE COIL TO TRIP AFTER ITS AUTOMATICALLY
CAME NORMAL POSITION BUT,
MPCB- TRIP THE COIL IT WILL BE MANUALLY SWITCH ON THE RUN
THIS IS THE DIFFERENCE
Is This Answer Correct ? | 7 Yes | 3 No |
Answer / mohammed abdul naeem
1. MPCB is Trip by (Auxiliary Block Contact.)
2. OLR is Trip by Thermal (heating by range setting)
Is This Answer Correct ? | 4 Yes | 1 No |
what is ferranti effect?
How do you change an AC motor to DC? why there is only 50 Hz frequency in india & not other?
which type of stability limit is higher,steady state or transient? why?
What will happen if the d.c. Shunt motor opened accidentally running on no-load has its shunt field winding?
11. As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why? 12. How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test? 13. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV? 14. Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it? 15. Explain why the Voltage drop will happen in 3 Phase line? 16. What is the equipment used to control the generator output? 17. What are the factors to be considered during the Synchronization? 18. What should be value of Circuit breaker operating time and tripping time? 19. Why the CT Secondary is rated as 5A generally? 20. At which time Synchronous generator act as a Synchronous Condenser?
in what type of applications v can use q meter?
what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?
0 Answers Apotex, Periyar Chemicals,
why ht motors are star connected?
Explain the term parallel path in dc machin ?
derive the formula of amp hours is calculated for 12v battery.where no. of plates is given
what is transformer
What is the principle of Excitation.