What happens with a Sol-Ark 12k in grid-tie with battery backup mode when the battery "disappears?" Does it continue to operate in straight grid-tie mode with only AC connected and DC not present?
Jason On Tue, Mar 15, 2022, 6:46 PM Jason Szumlanski < [email protected]> wrote: > That's what I was thinking- a MS4448 would be a nice option with a good > surge rating. > > I'm trying to make this work with little to minimal equipment onboard the > golf cart. Ideally, the battery would connect to a > stationary inverter/charger at the house via a cable/connector. The PV > would be permanently mounted also and would be grid-tied for times the > battery is not connected. I am thinking this needs to be an AC coupled > scenario with a grid-tie inverter that is AC coupled to the battery > inverter. I'm hung up on how to safely connect the battery to the inverter > (and more importantly, disconnect the battery from the inverter). > > > Jason > > > > > On Tue, Mar 15, 2022 at 6:29 PM Ray Walters <[email protected]> wrote: > >> Most carts run at 48vdc these days. They either have eight 6 volt >> batteries, or six 8 v batteries. I would think that would make a good >> match for power backup with a 4kw range inverter like the Magnum MS4448. >> >> Ray >> >> On 3/15/2022 12:18 PM, Nick A Lucchese wrote: >> > Not sure what the golf cart fleets are these days but decades ago as a >> youngster I worked at a course where all the EZ-GO’s were 36v nominal with >> all Trojan T-105’s. Also uncertain if still available or not but years ago >> the first Cybo inverters I purchased were also intended for 36v nominal >> battery banks. Perhaps George and the team still offer that model. It’s >> obviously a different type of architecture and I didn’t have any luck with >> the 4 amp 36v charger on the inverter’s AC output that was promoted but >> surely you could figure your means of charging with perhaps a Flexmax or >> similar. I had some issues with the hot water heater model but the off grid >> model consistently performed it’s inverting function assuming there was a >> fan or some sort of resistive or inductive load to keep the inverter awake. >> The only other 36v inverter I can think of was the Heart Transverter which >> was a big loss for a few of us. >> > >> > https://www.cyboenergy.com/products/offgridoverview.html >> > >> > Best of luck Jason, Nick >> > >> > >> > >> > >> >> On Mar 14, 2022, at 3:48 PM, Jason Szumlanski < >> [email protected]> wrote: >> >> >> >> Every now and then I get questions here in the land of hurricanes and >> golf courses about using golf carts as the battery bank for a permanently >> mounted grid-tie home PV system in a backup scenario. Does anyone have any >> ideas on a good way to do something like this? The battery would need to be >> able to be unplugged of course (not under load I hope!) It's mostly DIY'ers >> trying to cobble together a solution for a small critical load panel for >> their home. >> >> >> >> The idea is becoming more popular as people hear about using EVs for >> home backup. I'd like to get ahead of it and maybe even offer a solution >> that's safe, legal, and functional. >> >> >> >> Jason Szumlanski >> >> Florida Solar Design Group >> >> _______________________________________________ >> >>
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