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steves asked

Alternator & argodiode - where is the reference voltage?

I have a Volvo Penta D6 which includes a 150 amp VP alternator. This feeds a Argodiode 180-3AC. A recent voltage measurement showed 14.77V on the input side and 14.45V out to the 3 battery banks. Clearly the compensation is working.

My question is this. Who in the system is responsible for regulating the voltage? I presume the Argodiode is only monitoring the voltage drop. This implies the alternator has a voltage it is working to, perhaps 14.4V, but is designed so it can be 'influenced' to go a little higher by the compensation terminal. Do I have this correct? Is 14.4V a standard output?

Thanks.

alternator
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Mike Dorsett answered ·

you will need to take the reference voltage for the alternator from either the house or the starter battery, this will overcome the volt drop in the diode module.

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