Mark,
We humans many times make quite a stumble when we take a
big new step (grid tied solar plus L-ion storage with the brains to
manage all of it). I agree with you on one hand, we'll probably
screw-up the first few iterations. On the other hand I feel pretty
confident that my sensor laden, computer driven, signal processing,
technology burdened truck will get me from point A to point B with few
worries and for many miles. I think we'll figure this out as there is a
very powerful incentive to do so.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 6/18/2016 9:06 AM, Mark Frye wrote:
What could be simpler?
For some reason I can't help think of the Great Leap Forward in Chine
where Mao had all the peasants gathering up all the iron objects and
melting them down in small furnaces to help increase steel production.
Of course none of the "steel" was any good.
I guess it is because here I see a bunch of great industrial control
equipment stuffed into a tiny box and dropped in someones basement.
That's alot of stuff waiting to break or hang up or reset or something.
I really have to wonder what the operating state of this piece of
equipment will be in 3 years and if still operational, how many
person-hours of support and maintenance will have been expended.
Mark Frye
On 6/18/2016 4:48 AM, Chris Mason wrote:
Here's the internals of the one we installed.
https://www.dropbox.com/s/m0ie2tuqe7y1x9d/2016-06-15%2011.01.43.jpg?dl=0
It's a Radian, the batteries are Sony, there's a PLC in the door
controlling everything, and a Vera Z-Wave controller for the
programmable outlets.
The BMS is on the door, connected by the long cable you see at the
bottom. It's not really long enough, which I complained about.
The transfer switch is a Generac component, very reliable unit, rated
at 200A.
There is a DIN rail next to the inverter that holds all the internal
wiring, metering, external connections.
One thing I would advocate, never try to make any connections with
this unit powered up. It is very tight in there and the risk of
touching a live terminal is high.
There is a 200A main breaker and a battery breaker, which is software
controlled for powering down from the front panel. Startup requires
holding in a DC breaker for the electronics for a few seconds then
engaging the main battery breaker. The instructions says five seconds
but I find it takes about 15.
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