I recently had the voltage monitoring relay control fail. It monitors the output of the generator
(Fisher-Panda 11kw) and only allows it to connect to the boat's AC system if it is 230V +/-. If the voltage varies above or below a certain point (30%?) the control is supposed to shut off the relay that connects the genset. It failed, and the monitor
was flipping in and out, even though the voltage varied by 1% or so.
It got me to thinking... how important is this voltage monitor
? It seems to have a fairly wide operating range (when it works) -- maybe 30% or so. I don't see much variation at all in the generator
output. I suppose it could cause a problem with the appliances
if they were under/over voltage, but I've never had a problem with that and there is a voltage gauge.
Do others have a over/under-voltage monitoring control on their genset? If so, or if not, have you needed it? Ever hear of a genset running wild and ruining appliances
(watermaker, washer/dryer, A/C, dishwasher, battery charger
Thanks in advance.