Hi William, Brian
There was a change made to the XW Distribution Panel to accommodate nine
2-pole breakers for 3 inverter installations, as the original version
was with 8 slots only. Unfortunately the original 8 breaker capacity
version is still working its way through the inventory in the fie
I guess my question is more along the lines of is it feasible, what are the
costs if it is, what is the predicted lifespan and does it represent any
kind of legitimate breakthrough in terms of cost? (especially for the first
link, ZenithSolar)
Tom
- Original Message -
From: "Bruce"
We've used Optoblocks (SSR's) for years in traffic signal work, very
reliable.
Max Balchowsky
SEE systems
From: Marv Dargatz
To: RE-wrenches
Sent: Wednesday, April 29, 2009 10:33:51 AM
Subject: Re: [RE-wrenches] Solid state relay (SSR) questions
Hey Mi
The main issue that I understand with concentrated PV, is that it works
much better in the desert. Any moisture in the air diffuses the
sunlight so it comes in at random angles. I think the insolation tables
for a location give numbers for concentrated solar.
Bruce
Tom Elliot wrote:
Has any
Hey Mick,
We used a lot of SSRs in wind turbine controls. Found them to be
extremely reliable. Overrating the device is a very good idea. Also
be careful of very low temperatures, as the Current Transfer Ratio
(CTR) of the optical isolation can degrade over time and eventually
cause failure
Hello, Wrenchers and special greetings to the silicon gurus to whom I
address these questions about solid state relays.
A client wants a gizmo to connect grid "AC In" to their inverter/charger
when the battery voltage is low...resembling the LBX function on the good
ol' Trace SW inverter. The grid
Hello Matt,
All UL modules or panels with accessible metal parts are rquired to be
production line factory dielectric voltage-withstand tested for 1 minute
without electrical breakdown at 2 times maximum system dc voltage plus 1,000
volts (UL 1703, Section 43).
Joel Davidson
- Original Mes
Hello Matt,
Both hands up here too. One in the factory and one in the field. I require
technicians to use the UL 1703 standard dc test potential of 2 times maximum
system voltage plus 1,000 volts (or 3,000 vdc). Be safe. Wear your gloves.
Joel Davidson
- Original Message -
From: Ma
William,
I haven't used the XW system yet, so take this advice with that caution:
Talk with Robin at Midnite, 425 374-9060. He has developed his own power
distribution panel for use with the XW. It may have features that you need.
Allan at PosE
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From: re-wrenches-boun...@lists.re-wr
Hi Allan,
I have several part reels of 4 twisted pair Belden that I use for e meters.
It is shielded, static line, direct burial and all the good stuff.
Always best run alone to keep the signal from getting scrambled but it you
usually run it together, so be it..
Let me know,
Bob
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