Recently installed a Multiplus 3000 at a RV of a customer. He had a (small) petrol generator already available. (2800W). However, since this is a rather old unit, it struggles with sudden high loads.
From idle (no load) to a load takes some time to stabilize. The MP however detects it as a instable grid, and shuts down and the process repeats.
(Customer has an auto transfer switch so the AC input of the MP is either grid OR generator)
I have to reduce the DC charger to 20A in order for the MP not to shutdown.
By adding a base load of 300W (Halogen bulb) I was able to get 40A (common trick to stabilize small generators). However, I think it would be able to provide more charging if the charger ramp-up was slower (so the generator has more time to adjust for the load).
On some of our bigger UPSses we have an adjustable ramp-up time: The time which it takes to slowly switchover the load (and not a big drop of the load on the generator).
Is it possible to configure this setting? (Either a configurable timer, of just a toggle box 'enable slow ramp-up' which is like 60sec or so (so smaller generators have sufficient time to stabilize)