You are correct on this.
The failure of any control hardware, IO's / relays / contactor logic
along the way from generator sense to PV contactor should result in the
coupled grid-tie PV inverter disconnected. Which means the contactor at the
PV inverter should be energized "closed" (so PV AC conne
I haven't had problems with contactors failing. I suspect that a lot of
the problems on battery systems happen when contactors are controlled at
battery voltage.
The nominal voltage of the system is not what the coil will see. A 48
VDC coil might experience 63 VDC. A resistor needs to be put in
Ask any HVAC tech how many 240V contractors they replaced this week alone
on condenser units. They carry boxES on their trucks around here. Granted,
those are engaged far more frequently than in a PV system application,
enduring many cycles per day. But it's still not a failsafe solution.
In my op
Friends:
I have an elderly client with a dual SW system and group 8 AM batteries.
Due to a generator and charge control failure the AGMs failed after just 3
years. I don’t blame the batteries, they were likely chronically
undercharged for some months.
The client wants to consider using Simpl
William,
They do have integration guides on their website, very helpful:
https://simpliphipower.com/wp-content/uploads/documentation/phi-series/simpliphi-power-phi-battery-schneider-integration-guide.pdf
On Wed, Oct 12, 2022 at 4:28 PM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenche
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