lightning arrestors in high voltage arrays [RE-wrenches]

[Bill Brooks]

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Kirk,

The 302 is really for systems with a max Voc of around 300V. The 602 is for
600V Voc applications. Neither is UL listed at the moment, but I think they
are worthwhile if for nothing more than a lightning fetish. I don't know of
anything better from a cost/benefit standpoint for a SB2500U setup. SMA
can't actually recommend the product since it is not UL listed, but that
doesn't mean you shouldn't use it.

Bill.

-----Original Message-----
From: Kirk Herander [mailto:kirk at vtsolar.com] 
Sent: Friday, December 10, 2004 7:38 AM
To: RE-wrenches at topica.com
Subject: lightning arrestors in high voltage arrays [RE-wrenches]

Group,
Is the Delta 302 DC arrestor suitable for high voltage PV arrays? At what
voltage does it "turn-on"? Any other suggestions for lightning protection in
Sunnyboy systems?

thanks, Kirk

Vermont Solar Engineering
Kirk Herander
North American Board of Certified Energy Practitioners Certified Solar PV
Installer(TM) Xantrex Certified Dealer Charter Member NYSERDA-eligible
installer Vermont Solar and Wind Partner

PO Box 697
Burlington, VT. 05402
www.vermontsolar.com
www.backeastsolar.com
800.286.1252 - 802.863.1202
fax 802.863.7908

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