It was tough for me to figure out how to write my email and not make it
confusing.
What I am worried about is the microinverter system operating when the
utility goes down and the microinverters continuing to operate and
charge the batteries as a load. I need to disconnect the microinverter
circuit only when the batteries are fully charged in grid isolated
mode. All the ways I can think of that would normally work to
deenergize the microinverters automatically based upon battery voltage
won't work. I can submit a drawing if that would help. I am trying not
to run another conductor circuit from the house to the garage. I
realize that would solve the problem, but it is an expensive solution.
English is my foreign native language.
On 11/23/2021 10:39 AM, August Goers wrote:
Hi Chris - If I'm following you right, you have a PV system on a
detached garage that ties into a backup subpanel also in the garage?
The code only requires the RSID (rapid shutdown initiation device) to
be on the exterior of the building. Would it work to put the RSID on
the garage exterior? You could route your PV circuits to a switch or
switches on the exterior of the garage on the way down to the sub it
ties into. You could also use a shunt trip breaker(s) for the PV
circuit(s). If for some reason you need to have the RSID on the main
house, it gets trickier. Might need to trench?
August
Luminalt
On Tue, Nov 23, 2021 at 7:24 AM Christopher Warfel
<cwar...@entech-engineering.com> wrote:
I would appreciate ideas on how to shut down a proposed
microinverter system on a garage that is 100% serviced by an
Outback Radian multimode system in the main building that has the
garage on the back up service panel in the main building.
Garage has a MLO subpanel that is connected to the multimode back
up service panel that is in the main building.
If grid goes down, we need to disconnect the microinverter array
so it does not overcharge the battery system. If we use the
battery voltage relay, we will take out all the garage circuits,
which would disable its heating system, etc. We just want to
disconnect the microinverter circuit in the garage subpanel.
Does anyone know of a product that could do this. I would imagine
a transmitter, or perhaps something else besides a microinverter
array?
Thanks for any help. Chris
--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com>
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--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com>
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