I’ve got a 48/800 inverter on the way for an off-grid solar system up in northern Canada. The system will be a 4S 12V setup with a battery balancer, so the inverter will be running at its native 48V. ( kind of bummed Victron didnt make a 48 V battery balancer)
My question is about a potential future scenario: if one of my batteries fails, I might need to temporarily run the inverter on a 36V system. The datasheet specifies that the inverter operates between 36.8V and 62V and is adjustable. I played around with the demo app for the product and was surprised to see I could set the voltage down pretty low, almost wherever I wanted.
Is there a functional lower voltage limit on this unit? I’d be comfortable using 36V as the low-end cutoff in an emergency, but I’m wondering, can the inverter actually handle it safely ?
Hi,
Operating the inverter at such a low voltage will probably limit it’s maximum power output. However, my data sheets indicate the lower voltage is 38V, so 36V is not likely to work.
For this scenario, it may be better to get a small 24V inverter as a spare.
I looked up the datasheet again and can confirm that the one I have in hand (Datasheet-Inverter-VE.Direct-250VA-1200VA-EN-.pdf, directly from this page : https://www.victronenergy.com/inverters/phoenix-inverter-vedirect-250va-800va) it specifise that the input voltage range is from 36.8 V to 62 V with an adjustable DC low shut down at 37 .2 V.
That being said, it the emergency case I lose once of my 12V batteries in my 4S system, will the inverter run on 37.3-39 V in that situation, say enough to run a Starlink.