Why does Unisolar PVL-68 have different slope limitations?
I am wondering why Unisolar has different slope limitations for the PVL-68 for different roof classes. For example, for Class A roofs the maximum roof slant allowable is different for class C roofs.
Comments
Do not put too much weight in Unisolar's fire safety ratings! The Unisolar laminates ignited on the rooftop of the Long Beach Convention Center in February of 2008, a fact that the company has put every effort to keep secret. Plus, Unisolar will be bankrupt by the end of of 2013 anyway. So, proceed with caution, regardless of what the datasheet says!
leventbas: The Unisolar fire is not a rumor. I linked the fire report in my original post (click on "ignited").
jleonhardt is likely asking the question because PVL-68's datasheet lists the following electrical and fire safety ratings: Class A Max. Slope 2/12, Class B Max. Slope 3/12, Class C Unlimited Slope fire ratings.
leventbas: I assume you mean claims for fire damage? No, I was not involved in the Long Beach Convention Center diasaster. The ultimate loser there was the taxpayer (at the time of the accident the developer, DEERS, was frying a much bigger fish with Unisolar in Spain, so obviously they had no incentive to file a claim - that 12MW project, by the way, turned out to be an even bigger disaster). Unisolar sometimes simply denies that the accident happened, or simetimes blames some imaginary junction box, depending on the day of the week. And it is lying outright in its Bankability Report, claiming just 0.01% return (claims) rate for its PV laminates.
Comments
Do not put too much weight in Unisolar's fire safety ratings! The Unisolar laminates ignited on the rooftop of the Long Beach Convention Center in February of 2008, a fact that the company has put every effort to keep secret. Plus, Unisolar will be bankrupt by the end of of 2013 anyway. So, proceed with caution, regardless of what the datasheet says!
The Class A roof has the highest fire resistance rating for roofing. https://www.greentechrenewables.com/forum/8617/what-fire-rating-class-or-class-b-roof
I haven't heard the rumors that ECD Fan has written about, but I am pretty sure the answer is related to fire rating issue.
jleonhardt, do you have a document suggesting different slopes limitations for different roof class?
leventbas: The Unisolar fire is not a rumor. I linked the fire report in my original post (click on "ignited").
jleonhardt is likely asking the question because PVL-68's datasheet lists the following electrical and fire safety ratings: Class A Max. Slope 2/12, Class B Max. Slope 3/12, Class C Unlimited Slope fire ratings.
I've just realised that link. Thanks for clarifying this issue ECD Fan.
Did you make any claims? What did the company say?
leventbas: I assume you mean claims for fire damage? No, I was not involved in the Long Beach Convention Center diasaster. The ultimate loser there was the taxpayer (at the time of the accident the developer, DEERS, was frying a much bigger fish with Unisolar in Spain, so obviously they had no incentive to file a claim - that 12MW project, by the way, turned out to be an even bigger disaster). Unisolar sometimes simply denies that the accident happened, or simetimes blames some imaginary junction box, depending on the day of the week. And it is lying outright in its Bankability Report, claiming just 0.01% return (claims) rate for its PV laminates.