HI Allan;
Here's a relay I've used for electric vehicles with up to 156 vdc nom.
batteries. (pushing 200 vdc charging on cold days)
http://store.kta-ev.com/openstylepowerrelaydpdtwithmagneticblowout.aspx
Click on the spec sheet for more details.
This is from KTA electric vehicles, a very reputa
Allan,
General purpose relays seem to be rated for 30 volts dc.
Here are a couple possibilities for a dc relay that will handle the PV
power:
Panasonic AEP51012 (Mechanical relay - very expensive and difficult to
get)
Crydom D2D12
or D2D40 (Solid state relays)
It looks like the D2D40 will hand
HI Allan,
I suggest you use Solid State relays.
They come in 12v power voltage and up to 300VDC switched voltage, no arcs, low
power draw and more reliable than mechanical relays, just make sure you use a
good heat sink.
jay
peltzpower
On Jul 9, 2011, at 7:26 AM, Allan Sindelar wrote:
> Phil
Phil and Wrenches,
Thank you for the response; good food for thought.
We looked at Aerovironment as a result of your suggestion, but it
appears to be out of production and unavailable.
Kent's suggestion to use the gennie starting battery also makes
sense,
Allan,
You could use the generator starting battery instead of a separate
battery and PV charger. But either way a very small PV module (not the
one used to charge the battery) could be used as a light sensor input
signal for a Morningstar relay driver that starts the generator and
changes the
Use an ac charger to charge a small battery when the generator runs each
evening, and then power a timer or photosensor from the battery. Sears,
<$40. I wouldn't worry about the phantom load of the timer -- you're
running an 8kW diesel genset throughout the night. It oughta keep up.
The questio
Wrenches,
A good client of ours is a rancher in the New Mexico/Arizona border
area. He has a specific need for which I couldn't offer a simple
system.
He needs to raise water from a lake 400+/- vertical feet to a 100K
gallon storage tank for agricultural use. Th
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