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April 19, 2018, 05:00:00 PM

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Author Topic: THe Off Topic, Topic!!!!  (Read 261584 times)
Mike
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« Reply #2820 on: December 02, 2017, 11:03:38 PM »

Before 2014 there were no LED street lights here and at that time, they were just confined to brand-new RIDOT installations. Then in 2016 mass changeouts began with RIDOT and a few larger cities in RI. So far there haven't been any catastrophic failures and the lights haven't been around long enough to see how they will age. Most of the issues have been with the wireless nodes everyone but Cranston has used when going LED. Cranston opted for traditional photocells, except they're fail-off instead of standard fail-on, so dayburners are eliminated. Those fail off DTL photocells have not been holding up too well either. The original batch must've been botched or something since replacement units are holding up fine. The fixtures themselves (AEL Autobahns) seem to be holding up well. I've seen two failures in Cranston out of 33 thousand lights so that's not bad at all. Granted there are probably a few more I don't know about but the vast majority of failures are the PCs. The PCs have a blue indicator light on them so when the blue light is on and the fixture is off, the fixture is bad. When the blue light is off and the fixture is off, the PC is bad. The blue LED is really hard to see when the light functions normally though; you can really only see it when the fixture is bad, and it's very faint. Honestly the only reason I noticed it was because mine has the feature. The blue LED is always on as long as the PC has power (and isn't dead).

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GEsoftwhite100watts
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« Reply #2821 on: December 02, 2017, 11:12:48 PM »

My university is full of illuminated waffle irons, and they have those node PCs you describe.  At night, from upper floor windows of buildings, you can see indicator LEDs flashing.  LOL.
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« Reply #2822 on: December 16, 2017, 09:27:26 PM »

LED streetlights first showed up here around 2009 but the mass changeouts didn't begin until 2013-2014. The ones installed in 2009 used regular PCs but the newer ones use integrated nodes or twist lock nodes. The lights with integrated nodes had problems with dayburning when they were first installed. I think they were fail on so if they didn't get a signal they would stay on.

I'm not sure about the how 2009 LEDs are so far but the ones installed in 2015 have some failures, a couple got spot replaced with HPS and there are some that are strobing. The ones installed in 2013-2014 seem to be fine so far. 
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GEsoftwhite100watts
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« Reply #2823 on: December 16, 2017, 09:53:08 PM »

I was impressed to see that all ours are doing so well, almost 10 years for some of them!  Some of the state owned freeways, especially interchanges, are getting LED now too. 
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GEsoftwhite100watts
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« Reply #2824 on: January 19, 2018, 07:30:06 PM »

I've been buying lots of short linear fluorescents lately, F20T12, F15T12, F15T8 stuff.
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GEsoftwhite100watts
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« Reply #2825 on: March 04, 2018, 12:22:16 AM »

Had a fun experience the last couple days.  Well-known streetlight enthusiast Jim Terry was visiting Fairbanks, AK and I met with him and did about 10 hours' worth of passenger-seat driving pointing out some of the more unique lighting scenery around Fairbanks and its suburbs.  Spotted some stuff I'd honestly never noticed before thanks to him, including all the new signal poles going in around here.  We've had LED streetlights since 2008 and they've done surprisingly well for what they are, believe it or not. 
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« Reply #2826 on: March 12, 2018, 10:56:43 AM »

Had a fun experience the last couple days.  Well-known streetlight enthusiast Jim Terry was visiting Fairbanks, AK and I met with him and did about 10 hours' worth of passenger-seat driving pointing out some of the more unique lighting scenery around Fairbanks and its suburbs.  Spotted some stuff I'd honestly never noticed before thanks to him, including all the new signal poles going in around here.  We've had LED streetlights since 2008 and they've done surprisingly well for what they are, believe it or not. 
I wonder if the cold has something to do with their long life.
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GEsoftwhite100watts
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« Reply #2827 on: March 12, 2018, 01:53:29 PM »

I'm thinking it does...
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« Reply #2828 on: March 19, 2018, 05:53:48 PM »

The old ones last a long time but they dim out badly. The LEDs up there are probably 2/3 of the brightness they should be.
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GEsoftwhite100watts
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« Reply #2829 on: March 19, 2018, 11:05:05 PM »

They're still usably bright, but yeah.
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