[RE-wrenches] Delta LAs

[Kristopher Schmid]

My thought here is that nothing will protect the equipment from a direct
strike, but a near strike that may induce a significant surge may be
absorbed by the LA and protect the equipment.  I like the feedback so far.
It would not break my heart to stop using them altogether.:-}
 
Kris

Legacy Solar
864 Clam Falls Trail
Frederic, WI 54837
715-653-4295
solman at legacysolar.com
www.legacysolar.com 

-----Original Message-----
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of August Goers
Sent: Tuesday, September 14, 2010 10:39 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Delta LAs


All -
 
I guess my thought is a little off topic, but are lightning arrestors even
worth using at all? My logic has always been that if lightning does indeed
strike that it's likely going to blow the arrestor and and inverter. We
don't have much of a lightning issue issue in the Bay Area so I don't have
any direct experience.
 
Best,
 
August


On Tue, Sep 14, 2010 at 6:29 AM, Kristopher Schmid <solman at legacysolar.com>
wrote:


It is quite ironic that just a week after I posted a question to the group
on testing the integrity of lightning arrestors, I had one apparently faulty
out of the box.  The manifest of this was interesting: when the AC LA
(LA302R) was connected in parallel on the AC input to a SB3000 inverter,
there was 125vac neutral to L1, 125vac neutral to L2, and 1Vac L1 to L2.
SMA tech support suggested the LA as the issue and sure enough, it was.
Attempting to test good and faulty arrestors with an ohmmeter gave the same
result - off scale open.

Any thoughts or comments from the group?

Kris Schmid

Legacy Solar
864 Clam Falls Trail
Frederic, WI 54837
715-653-4295
solman at legacysolar.com
www.legacysolar.com <http://www.legacysolar.com/> 

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-- 
August Goers
VP, Engineering

Luminalt Energy Corporation
1320 Potrero Avenue
San Francisco, CA 94110
O: 415.641.4000
M: 415.559.1525
august at luminalt.com


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