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Xcel Type C LED equivalent to 150 watts HPS

Xcel Type C LED equivalent to 150 watts HPS

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Xcel Type C LED

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Album name:mdcastle / The Street Lights of Minnesota
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Keywords:Lanterns
File Size:407 KB
Date added:Nov 12, 2016
Dimensions:2465 x 1848 pixels
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merc
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Adam


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Nov 13, 2016 at 10:00 AM Author: merc
Equivalent to 150 W HPS???
The LEDs look pretty tiny - must be extremely bright!

Not a misoLEDist...





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Nov 13, 2016 at 10:32 AM Author:
... could well be Adam. There are 36 LED chips inside, and if these are driven at 3 Watts each, then that corresponds to 108 W of source input power. Given the performance of today's LEDs (taking the specs of a 2-year-old CREE XML2-U2 with a junction temperature of 100°C as reference), we should get ~450 lm per chip, or 16,500 lm for the whole source. The lantern's optics look good and its optical efficiency should in the 90% range, giving a total of 14,580 lm for the overall luminaire's output. In comparison, a top of the range 150W HPS lamp (Philips SON-T APIA Plus Xtra) outputs 18,000 lm at 100 hours. The optical system in a good conventional HID lantern has a typical optical efficiency of ~80%, which gives a total luminaire output of 14,400 lm.

So, the numbers compare perfectly: this LED luminaire is most likely a good 150W HPS replacement, especially since it certainly consumes ~120 W instead of the ~170W from the HPS system.
merc
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Adam


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Nov 13, 2016 at 10:45 AM Author: merc
OK, Max. I didn't want to say it's impossible.
I just was surprised by their very small size - normally they occupy a significantly bigger part of the lantern - here they look like a few grains of sand and yet they're so powerful!

@dor123: Only a direct comparison of the two light sources would tell.

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Manuel


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Nov 28, 2017 at 04:17 PM Author: Prismatic
I see more then 36 LED chips. On the bottom there is another cluster with 18 chips

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lightinglover8902
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Yes. Power distributor:CenterPoint Energy.120V60Hz


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Jun 01, 2019 at 10:06 PM Author: lightinglover8902
GE Evolve ERL1. And its a glare bomb fixture.

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