Motor controllers

[1/2sparky]

Hi again
Was looking through some material and a question stated how are coils and contactors connected in a motor controller?
In series
In parallel
In series parallel
I went with series.

 

[GoldDigger]

Unless you have misquoted the question it is very badly written.

Does it mean that if you have two contactors each with its own coil, how are the coils connected to each other and how are the contactor contacts connected to each other. The coils (including their series control switches) would be in parallel and the contactor contacts would typically (but not necessarily) be in parallel.
Or does it refer to the relationship of each contactor's coil to its contacts? In which case none of the answers are correct, as the coil and contacts may not even be supplied by the same power source.

 

[don_resqcapt19]

No idea of what the question is about...the coil is part of the contactor and provides the magnetic force to close the contactor. There is no electrical connection between the two, just magnetic.

 

[zbang]

Could consider holding contacts as that connection, but that's a separate case.

 

[Jraef]

IF this question accompanied a DIAGRAM that showed a motor starter with a LINE VOLTAGE coil, and IF the coil was SUPPLIED by the same line as one of the power poles and IF it was returned to another pole (as opposed to Neutral), then you might consider them to be in a series parallel circuit... In series with 2 phases of the line, parallel to the load.

A lot of IFs in that statement though...