Sorry, the 155 Watt modules have MC4's, not Tyco.
Larry
On Jan 24, 2013, at 12:35 PM, Allan Sindelar wrote:
Wrenches,
We have years of installing 36-cell (12V) and 72-cell (24V) modules for
battery-based customers. Most of our systems are 24V or 48V nominal. Over the
last few years, sources of conventionally-sized 72-cell modules have dried up -
as cells have increased in size, most modules and most newer factory production
lines have either gone to 60-cell (20V) modules, or 72 cells in 300+ watt
ranges. It seems that the formerly common 72 cell, 24V modules in the 150-190
watt range, which are well-suited to integrating into existing systems, are no
longer available.
60-cell modules in the common 220-250 watt range can't be added to an existing
system unless run through a dedicated MPPT charge controller that can convert
voltage, such as an FM, XW60, Classic or TriStar; the added cost of any of
these controllers cancels out the low prices of the modules.
Who continues to manufacture 72-cell modules? Which distributors carry them?
I am aware of three options - are there more?
- Sunpower makes one module in the 245 watt range that can be used negative
ground, but it's very high efficiency (and with high Voc/Vmp as well) and very
pricey;
- Sanyo/Panasonic has 225-240 watt modules, but also quite premium and
pricey;
- Ameresco bought the rights to manufacture many former BP modules, and I
think they make some. But we had to replace lots of failed BP modules in that
size range, and are hesitant to use their technology, fearing that the problems
may persist in the continued line.
Thank you for any discussion and recommendations.
Allan
--
Allan Sindelar
[email protected]
NABCEP Certified Photovoltaic Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
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