Charging : Adverc : Alternator Problem

[sailor211]

I have reoccuring problems with charging voltage following a failure of my split charge diode last year. Mostly all is OK, but occassionally the volatge creeps up to 17 V Not good. Unplugging Adverc helps. Adverc was tested as OK last year prior to split charge diode as failled totally. Also alternator has a new regulator pack following failed diode.

Haveing spent too many hours with a voltmeter trying to understand what is happening and getting nowhere, I have to admit that the problem is beyond my mechanical engineers brain to sort out.

Can anyone reccoment a sutiable marine electrician who works in Gosport who will understand what is happening and know how to sort this.
Many thanks for any reccomendations

 

[pvb]

If the Adverc's battery sensing lead becomes disconnected, it will increase the charging voltage to 17/18v.

If a split charge diode fails so that the battery being sensed no longer receives charge, the Adverc will similarly increase the charging voltage. I've seen this boil a battery dry when a diode splitter failed.

 

[sailor211]

I believe I have checked the sensing lead , but have in mind that the problem is something like that.
the failing split change diode did cause the voltage to do some odd things.

 

[PaulRainbow]

Chances are, if you remove the Balmar and replace the diode pack with a low loss splitter, such as the Victron Argofet, you'll be fine. You could test by disconnecting the Balmar and reading the output voltage at the alternator. Few modern alternators need fancy external regulators these days, other than to overcome the voltage loss of the diode pack.