Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Christopher Warfel via RE-wrenches
Wouldn't the microinverters shut down if the voltage rose?  They wouldn't be able to raise voltage about PUC/DPU limits I would think. They would shut down on high voltage. I am saying this because of an experience this fall where our infamous Block Island Power Company raised the taps on a loc

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Peter Giroux via RE-wrenches
Morning all. Just got a call from a customer with a radian and fortress battery that caught fire. Has anyone had any issues with either unit?? We have numerous systems with combos of both and no issues. System has been in place for well over a year, climate controlled garage and system has worke

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Darryl Thayer via RE-wrenches
Hello, my first thought is the BMS board, on the battery reaching near full charge the BMS does a top balance where the board diverts the current around fully charged cells and continues to charge cells not fully charged. this diversion current generates heat. that the board must dissipate. Whe

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Drake Chamberlin via RE-wrenches
William, I ran into this once on an old transformer, which fortunately they changed at no cost. It was a 10 kW transformer on a 200 A (48 kW) service. They had some dimming of lights on heavy loads, and the transformer was changed out on that basis, at no charge. My questions for the utility w

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Jay via RE-wrenches
If the utility is PG&E in my experience here is what happens They say yes or no to the interconnection. If no you have the option to request an engineering study to determine how much solar. That study is at your expense, paid in advance and the exact cost isn’t known until the study is done. Could

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Christopher Warfel via RE-wrenches
What happens if the study shows yes, that their no was wrong. Or does that never happen?😕 On 12/26/2022 12:48 PM, Jay via RE-wrenches wrote: If the utility is PG&E in my experience here is what happens They say yes or no to the interconnection. If no you have the option to request an engineeri

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Jay via RE-wrenches
Yes often the study says, yes it’s ok to do the original design and you still have to pay. Remember it’s pay in advance of getting the report. If no then usually they give a cost estimate to upgrade what ever needs to be replaced or a downgraded solar  design that will work with existing equipment.

Re: [RE-wrenches] Utility transformer limitations

2022-12-26 Thread Peter Giroux via RE-wrenches
Hi again wrenches. Have a customer looking for a LG Resu 10 “B” battery in good working order. Wants to add it to his current Resu 10 for additional storage. Thx Peter Giroux ASAE From: RE-wrenches On Behalf Of Peter Giroux via RE-wrenches Sent: Monday, December 26, 2022 9:40 AM To: cw