Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between MPCB and OLR?
- 11 Answers
- 59366 Views
- ABB, Raj Agencies, I also Faced
- E-Mail Answers
Answer Posted / 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 |
Post New Answer View All Answers
how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps
What are the differences between single phase and three phase?
How to calculate MCB Breaking capacity.
Explain few advantages of electric traction system?
Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.
Form S and "c" license application both are same? @ tneb portal
At what factor resistance r of a conductor depends?
What is meant by load angle of an alternator? Upon what factors does the load angle depend?
In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?
State The Difference Between Generator And Alternator?
what is the current density of copper & alluminium.
difference between Ac and Dc mcb ????
what is buffer resistance starter.?.What is the working principle and where it is used..?
what is the difference between an alternator and a synchronous motor
what is excitation/
