Hello Ray,
He has had almost no utility power outages since he got his PV system in
2001. By going batteryless, his dc-to-ac conversion efficiency and kWh
production should increase by over 15%. He has not decided if he wants to
keep the SW4048 and float charge his batteries with the grid for emergency
power.
Joel Davidson
----- Original Message -----
From: "Ray Walters" <r...@solarray.com>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Sent: Wednesday, November 09, 2011 12:59 PM
Subject: Re: [RE-wrenches] What inverter? (was Faulty PM-60 circuit board)
He doesn't want battery backup?
Ray
On 11/9/2011 10:33 AM, Joel Davidson wrote:
Wrenches,
After telling my customer to upgrade to an MPPT charge controller (thanks
Ray Walters and John Blittersdorf), he decided to really optimize his PV
array and retire his Trace SW4048 inverter. He has 48 Siemens SP75
modules (67.5 W DC PTC) that are ground mounted in full sun and easy to
re-wire. With so many new batteryless grid-tie inverters on the market,
this is a good time to ask this sage group with over 3,000 combined years
of experience what inverter do you prefer?
Joel Davidson
----- Original Message ----- From: "Joel Davidson"
<joel.david...@sbcglobal.net>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org>
Sent: Saturday, November 05, 2011 4:50 PM
Subject: Faulty PM-60 circuit board
Wrenches,
My customer has a circa 2001 Pulse PC250 with a faulty PM-60 circuit
board TC-750, REV D2 (the microprocessor U1 has v2.5 and v1.01 written
on a label on it). Does anyone repair or have replacements for PC250
PM-60 circuit boards? If not, what do you recommend? Thank you in
advance for your help.
Joel Davidson
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