Hi Jeff. I have turned off your subscription until you let me know you are
back. Please be sure to not send vacation messages to the list next time you
leave. Thanks.
je...@villagepower.com wrote at 01:00 PM 6/19/2009:
>I'm away on vacation until June 29th. I will return your email then.
>
>B
Bob-O,
Good points. A good designer would still avoid putting PV in the shade in the
first place. A retrofit has to factor in the material and labor costs vs. the
value of the system performance improvement. Has anyone done a Solar Magic
installation or some other type of retrofit to remediate s
I asked the National Semiconductor people about temperature affecting
SolarMagic product life because its operating temperature is -40F (-40C) to
158F(70C) and solar modules get hotter than 70C. I was told that 70C is ok
because their device is not in direct contact with the module.
Joel Davids
Don,
SolarMagic is an MPPT DC to DC converter that you put on every modules
in a string where some of the modules are going to be shaded. You would
only do this if there are other strings that had no shading. When a
module (or two) in the string is (are) shaded, the SolarMagic devices on
the m
guys,
thanks for your input. I didnt know about the add on. glad to see it is out
there.
thanks again
Nick Vida
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Nick,
Fronius sells a heavy copper buss bar which will link all the six
inputs together. They look sort of like the Outback PSPV bus bars
except copper and MUCH heavier. If you need four or more inputs you'll
need to get two of them. Three or less, cut one in half. For some
reason known o
Nick,
This was addressed in the Fronius online newsletter that came out yesterday.
Two Buss Bars - the ins and outs of connection
Fronius buss bars
Sold individually. Make sure to order two Buss Bars - one for each leg of
the trip.
Fronius IG Plus Inverters have a six-string fused combi
hey Wrenches.
I opened my soon to be installed fronius IG Plus to see what was going on in
there, and found myself a bit disappointed. There is a 6 string combiner in
there which is fine, however there is no bypass for the fusing section and the
terminals are rated at 20 amps. In a situation wh
My guess:
Each unit is a DC to DC converter with a controllable 1:10 boost to the
output side; module side has a MPP tracker; inverter side outputs are
parralleled and adjust to a single common voltage. The string inverter sees
a constant DC voltage of 200-300 depending on the module Vmp.
Mark
Don't these things add like a buck a watt to the cost of the system?
If that's so, they would have to be magic indeed to yield 10%-15% more
power/year depending on system costs.
Bob-O
On Jun 20, 2009, at 10:29 AM, i...@aol.com wrote:
In a message dated 6/19/2009 9:39:22 P.M. Pacific Daylight
In a message dated 6/19/2009 9:39:22 P.M. Pacific Daylight Time,
joel.david...@sbcglobal.net writes:
I have some clients with shading problems that may be potential Solar
Magic retrofits.
Ok, so I've read the pitch from the Manu, however not sure even if the
published specs for sha
I was having a conversation with Michael Rogol from Photon yesterday and his
only concern was the life expectancy. They are testing them.
Other than that they are working as far as overcoming intermittent shading.
Conrad Geyser
Cotuit Solar
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