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What exactly does UL 2703 approval mean and which of your products meet this requirement?

What does UL 2703 approval refer to?  Which products meet this requirement and/or are impacted by this certification?

Comments

mg on February 28, 2012 - 12:11pm
The Scope of UL 2703 is the following:

1.1 These requirements cover rack mounting systems and clamping devices for flat-plate photovoltaic modules and panels that comply with the Standard for Flat-Plate Photovoltaic Modules and Panels, UL 1703, intended for installation on or integral with buildings, or to be freestanding (i.e., not attached to buildings), in accordance with the National Electrical Code, ANSI/NFPA 70 and Model Building Codes.

1.2 These requirements cover rack mounting systems and clamping devices intended for use with photovoltaic module systems with a maximum system voltage of 1000 V.

1.3 These requirements cover rack mounting systems and clamping devices pertaining to ground/bonding paths, mechanical strength, and suitability of materials only.

1.4 These requirements do not cover:

a)    Equipment intended to accept the electrical output from the array, such as power conditioning units (inverters) and batteries.
b)    Any tracking mechanism.
c)    Cell assemblies intended to operate under concentrated sunlight.
d)    Optical concentrators.
e)    Combination photovoltaic-thermal modules or panels.
f)     Equipment intended to carry current as a normal function of that component, such as combiner boxes, connection boxes (other than connection box for grounding), wireways and enclosures housing live parts. See the Standard for Flat-Plate Photovoltaic Modules and Panels, UL 1703 or the Standard for Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources, UL 1741.


aglezb on August 9, 2012 - 8:49am
Is it clear to anyone in this blog that in UL2703 the statement "intended for use with photovoltaic module systems with a maximum system voltage of 1000 V" includes 600V modules/systems? Thanks.
SF_Solar on August 9, 2012 - 8:59am
Yes, this includes 600V systems.
aglezb on August 9, 2012 - 10:41am
SF_Solar: Thanks for the prompt answer. My question actually comes from the wording difference between the two scopes. UL1703 scope says "maximum system voltage of 1000 V or less" and UL2703 scope says "maximum system voltage of 1000 V". Is you answer based on your interpretation or do you have other elements that will confirm it? Not questioning you, just making sure... Thanks again.
SF_Solar on August 9, 2012 - 11:01am
Good point. I'm basing my opinion on two things:
1. That the 2703 scope includes modules (elements) of the 1703 scope (1000V or less) 
2. Experience with field listing of unlisted prototype racking that was for a 600V system and allowed under 2703
But that little omission does leave it open to discussion, I agree.
aglezb on August 9, 2012 - 2:50pm
In any case, simple and clear thinking... I take it. Thanks