Old Timber guy
New Member
Hi this is Rick
I'm new here and enjoying many hrs of reading past questions and posts. I have read everything I can find about pre-charging the inverter before connecting to battery. I believe I may have damaged or destroyed my 3 year old Giandel PS-3000KAR inverter, (for lack of knowledge on pre-charging)? My system is for emergency and hobby. My heating system is a pressurized wood boiler which needs constant power to circulation pumps, should we have an outage. Secondly we have freezers etc that are nice to keep running should the outage occur in the summer.
Anyway here is the problem, and the dumb question. Every component can be isolated by breakers, fuses, and battery switches. When the batteries are fully charged I generally turn off the panels first, then the battery from the CC, and sometimes I switch off the batteries from the inverter. The battery switch is rated for 600 amps, so I wasn't worried about an arc, but I never considered the in-rush on the inverter. I also use the battery switch to go back and forth between 2 battery banks, all of this successfully for 3 years. I have a new inverter, and I'm attempting to repair the old one with 24 new mosfets. The pre-charge circuit I'd like to include before installing the new inverter will use a light bulb as suggested by many. I'm planning to place it permanently wired into the system, choosing the bulb method as a visible confirmation of this often repeated action. Here's the dumb question: Should the pre-charge be needed every time I switch off the inverter, or only when I disconnect and reconnect the battery? Is it even advisable to leave the battery connected to the inverter for long periods of idle?
I will be posting a future inquiry on troubleshooting an inverter if I'm unsuccessful after replacing all the mosfets. This is the only suggested repair from Giandel tech, I can't find a schematic on the inverter or anyone that has made a repair?
Thanks for any help! Rick
I'm new here and enjoying many hrs of reading past questions and posts. I have read everything I can find about pre-charging the inverter before connecting to battery. I believe I may have damaged or destroyed my 3 year old Giandel PS-3000KAR inverter, (for lack of knowledge on pre-charging)? My system is for emergency and hobby. My heating system is a pressurized wood boiler which needs constant power to circulation pumps, should we have an outage. Secondly we have freezers etc that are nice to keep running should the outage occur in the summer.
Anyway here is the problem, and the dumb question. Every component can be isolated by breakers, fuses, and battery switches. When the batteries are fully charged I generally turn off the panels first, then the battery from the CC, and sometimes I switch off the batteries from the inverter. The battery switch is rated for 600 amps, so I wasn't worried about an arc, but I never considered the in-rush on the inverter. I also use the battery switch to go back and forth between 2 battery banks, all of this successfully for 3 years. I have a new inverter, and I'm attempting to repair the old one with 24 new mosfets. The pre-charge circuit I'd like to include before installing the new inverter will use a light bulb as suggested by many. I'm planning to place it permanently wired into the system, choosing the bulb method as a visible confirmation of this often repeated action. Here's the dumb question: Should the pre-charge be needed every time I switch off the inverter, or only when I disconnect and reconnect the battery? Is it even advisable to leave the battery connected to the inverter for long periods of idle?
I will be posting a future inquiry on troubleshooting an inverter if I'm unsuccessful after replacing all the mosfets. This is the only suggested repair from Giandel tech, I can't find a schematic on the inverter or anyone that has made a repair?
Thanks for any help! Rick