Unicorn1618
New Member
10X 370 watt PV panels, 18KPV, 2X Powerpro batteries, totally off grid.
Battery state of charge ~70%.
When the sun is coming up in the morning and the solar panels are putting out less than 100 watts, the inverter shows that it is charging the batteries and sending power to the house. When turning on a 900 watt hair dryer, the dryer goes to full power for a few milliseconds, then the fan speed drops down very low. The hair dryer is new and works fine at all other times.
Somehow, at essentially the same time, the furnace is either on or starting up, and the 24V winding in the 120 to 24VAC transformer in the furnace fries. The transformer has a built in 2A circuit breaker and there is a dedicated inline 2A circuit breaker. Neither trip.
This has happened 3 times.
I'm assuming there is some issue with the 18KPV output voltage drooping when a high load appears when the PV panels are putting out low power.
I have changed the PV startup voltage from the default 140V to 350V and set the inverter to "charge first", but have not tested these changes yet (11/7/23).
Any input/advice/suggestions are welcome. I sincerely hope someone can help with this!
Thanks in advance.
Battery state of charge ~70%.
When the sun is coming up in the morning and the solar panels are putting out less than 100 watts, the inverter shows that it is charging the batteries and sending power to the house. When turning on a 900 watt hair dryer, the dryer goes to full power for a few milliseconds, then the fan speed drops down very low. The hair dryer is new and works fine at all other times.
Somehow, at essentially the same time, the furnace is either on or starting up, and the 24V winding in the 120 to 24VAC transformer in the furnace fries. The transformer has a built in 2A circuit breaker and there is a dedicated inline 2A circuit breaker. Neither trip.
This has happened 3 times.
I'm assuming there is some issue with the 18KPV output voltage drooping when a high load appears when the PV panels are putting out low power.
I have changed the PV startup voltage from the default 140V to 350V and set the inverter to "charge first", but have not tested these changes yet (11/7/23).
Any input/advice/suggestions are welcome. I sincerely hope someone can help with this!
Thanks in advance.