Electrical part identification

[Markinaboat]

Morning all,

 

So whilst looking to resolve the usual leccy issues, I noticed a small cylindrical thingamy-bob inline between an Isolator for the inverter input supply and the domestic battery Isolator. It also has a couple of wires running from it with (what appears to be) a 5 amp fuse. Have never noticed anything like this part before on teh various boats I've had over the years. Was nigh on impossible to get a clean view but pics below...

 

Any ideas?

 

Edited to say "starter battery" isolator, not domestic although there is a third domestic isolator out of shot. And now wondering if it's a relay of some sort.

Edited December 31, 2018 by Markinaboat
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[DHutch]

Not overly clear which part your interested in, however is it prehaps a largeish relay? To heavy gauge cables, and a smaller wire or two to energise.

 

 

Daniel

[Dr Bob]

Looks like the induction charger for your ecofan.

[stegra]

My guess is that it's a large relay triggered by a small voltage-sensing split-charge relay. Trace the smaller cables back and one of them might go to the smaller relay. 

[DHutch]

13 minutes ago, Dr Bob said:

Looks like the induction charger for your ecofan.

Sigh

 

2 minutes ago, stegra said:

My guess is that it's a large relay triggered by a small voltage-sensing split-charge relay. Trace the smaller cables back and one of them might go to the smaller relay. 

Split charge system seems as good an explanation as any for a large relay in that location. 

 

Daniel

[Tony Brooks]

18 minutes ago, DHutch said:

Not overly clear which part your interested in, however is it prehaps a largeish relay? To heavy gauge cables, and a smaller wire or two to energise.

 

 

Daniel

That would also be my guess, but for what for. It could be a split charge contactor or a remote battery isolator contactor. You would need to trace the cables to find out how its wired and then deduce what it is for.

[Markinaboat]

Thanks for the quick input everyone!

 

I'll have to remove bits and bobs to get a better trace on it. If it was linking/splitting the connection between the domestic and engine only and not between the inverter input and engine batt, then it would make more sense. The fuse cold just be a later addition for a power take-off.

 

It's definitely no the Ecofan as I have the latest bluetooth version!

[bizzard]

You should hear it clicking or clunking when you switch things on or off. If you disconnect a big red cable from it, you could probably find out then by what doesn't work.

[stegra]

23 minutes ago, Markinaboat said:

Thanks for the quick input everyone!

 

I'll have to remove bits and bobs to get a better trace on it. If it was linking/splitting the connection between the domestic and engine only and not between the inverter input and engine batt, then it would make more sense. The fuse cold just be a later addition for a power take-off.

 

Could it be that it's a relay that only allows the inverter to run when the engine is running? 

[Markinaboat]

9 minutes ago, bizzard said:

You should hear it clicking or clunking when you switch things on or off. If you disconnect a big red cable from it, you could probably find out then by what doesn't work.

If I can't find out by tracing, then that would indicate of the starter batt was getting a charge or not.

3 minutes ago, stegra said:

Could it be that it's a relay that only allows the inverter to run when the engine is running? 

Good point but the inverter does run without the engine running.