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 Post subject: Re: New Urbis Products
PostPosted: Sun Apr 01, 2018 5:08 pm 
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There are some Evolos near me on the Wrens Nest estate in Dudley, West Midlands. I do like them, they're very slick and nice looking.


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 Post subject: Re: New Urbis Products
PostPosted: Sat Nov 10, 2018 2:55 pm 
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Hi All, I think Urbis/Schreder Evolo has been discontinued as it no longer appears on the Schreder UK website.


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 Post subject: Re: New Urbis Products
PostPosted: Sun Nov 11, 2018 3:32 pm 
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Whilst their product range has LED retrofit products available for the ZX1 with no reference to the ZX12, the product must still be compatible as the London Borough of Southwark have been retrofitting their ZX12s (dish bowl) with LED. Not sure what is happening to the ones with the deeper refractor bowls.


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 Post subject: Re: New Urbis Products
PostPosted: Thu Jan 03, 2019 3:46 pm 
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How much difference do the deeper refractor bowls make in reality btw, Alex?


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 Post subject: Re: New Urbis Products
PostPosted: Fri Jan 04, 2019 8:25 am 
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The refractor bowl considerably changes the light distribution. Flat/shallow bowls provide a near cut off distribution (flux directed mostly downwards with limited spread in azimuth), deep bowls provide semi cut off (more spread in azimuth), refractor bowls increase further the light spread on the ground and the flux at higher elevations.

Refractor bowls can introduce glare which is why they are seldom used with higher wattage SON lamps. They are more suitable for SON-E rather than SON-T lamps, the point source of the latter, tends to make glare worse.

Refractor bowls can also cause more "nuisance" light spill in residential areas, the greater light at high elevations and the less controlled distribution can result in backspill into bedroom windows.


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