Wrenches,
We have issues with a 1-1/2 year old 25 kW grid-tied PV system utilizing 2 step
up transformers from the array to grid. Actually it’s two identical, 12.5 kW
systems (for incentive and financing reasons) on each transformer. Note that
the inverter size and voltage selection was also
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Jerry Shafer
Sent: Wednesday, 18 March, 2015 21:57
To: RE-wrenches
Subject: Re: [RE-wrenches] Load testing Lithium battery bank
We use elite batteries with BMS no problems, the BMS sensor does seem to run
Hi:
You've run into one of the reasons why single phase inverters which are
operated as a 3-phase cluster, are supposed to have built in circuits/comm
wires which send a shutdown signal from one to the others so that if one
stops, they all do.
The Xantrex GT / Conext TX have an RJ-11 wire
Hi Gary,
We have implemented a preheat strategy that has really worked well at a
site using dual sunny islands. They have a load shed function built in
with the control relays. We are using that function to add the block
heater load. When a generator start is likely (~50% SOC) it triggers a
Wrenches,
I'm curious what strategies you use to preheat a propane gen in cold climates.
This is a large off-grid design in a sub-zero winter climate and ideal would be
to turn on a block heater an hour or two in advance, then run the gen cycle. We
plan to use either a Schneider XW or Outback
Gary,
Mac's approach is intelligent and will work well, as an automated
system with the right hardware. We took a quite different approach
on a somewhat similar scenario in 2009.
This was a Kohler 8.5REZ, with the electric carb heater and AC
charter for the
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