Re: [Amel Yacht Owners] Alternator and Masse leak detector

ngtnewington Newington

Hi Alan,

I have had an electrician check the boat for me and I asked him to look into the -ve leak and to then try some diagnosis.

This is his reply  "I checked the leak controller, it shows a leak in negativ. I tried several things like bilge pump but nothing changed. When I dismantled the negativ from the 24 V alternator, the leak light went off. So, the problem might be the alternator or somewhere at the engine.”

So I reckon that this would suggest a fault on the 24v alternator or some kind of leak to the bonding system from the engine.


On 19 Jun 2018, at 02:18, divanz620@... [amelyachtowners] <amelyachtowners@...> wrote:

Hi Nick,

We have a NEXT STEP-2 reg ...there is a file in the Files section showing how I did it

The reg in the Leece  Neville alt is not designed to charge deep cycle batteries.
Keeping the voltage always at 28.8V will eventually kill your AGM batteries. They need a bulk, absorption, float regimen if they are to be cared for properly.

We have 
600W solar panels and  a Victron MPPT controller
Leece Neville 175A engine alt with Next Step-2 reg
Victron Skyalla 100A charger
Promariner 30A charger

and they are all set to the same absorption and float voltages.

Diodes fail open, I don't think that can be the cause of your problem.

Somewhere on some device that has both 24VDC feed AND a connection to the bonding system, there is a connection between -ve and the bonding connection...and it may not be a metal to metal contact , frequently it is through the sea water. 

Good Luck
Elyse SM437  Yasawa-i-rara

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