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Luxmat SHZ 44

Luxmat SHZ 44

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Fixture designed to be used in level crossing lighting. It has two 150W HPS lamps but normally only one of them which is the main lamp is ignited every night. When it reaches EOL and fails to start an automatic switch turns on the second lamp and a very small red diode which signals failure of the main lamp. That way there will be continuous light till the maintenance worker comes to change the lamp.

DSC55935.JPG DSC15952.JPG DSC15979.JPG IMG_3585.JPG

Light Information

Light Information

Manufacturer:Luxmat

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Filename:DSC15979.JPG
Album name:trojmiejski / Lanterns in Poland
Keywords:Lanterns
File Size:249 KB
Date added:Aug 13, 2019
Dimensions:1600 x 1200 pixels
Displayed:30 times
Date Time:2013:02:20 18:26:14
DateTime Original:2013:02:20 18:26:14
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FNumber:f 18
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Focal length:21.25 mm
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Make:SONY
Model:DSC-W390
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kai
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Aug 13, 2019 at 08:52 PM Author: kai
But no asymmetrical reflector it seems? This is the special feature of a German luminaire for level crossings, developed not too long ago.
trojmiejski
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Aug 14, 2019 at 05:17 AM Author: trojmiejski
In this fixture and some other completely different fixtures with the same system there are no dedicated reflectors different from those in the base models.
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Aug 14, 2019 at 09:53 AM Author: dor123
How the switch know that the lamp failed? HPS lamps mostly cycles at EOL.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

trojmiejski
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Aug 14, 2019 at 10:33 AM Author: trojmiejski
I'm not exactly sure, maybe it detects the shutdown of the lamp during cycling.
kai
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Aug 14, 2019 at 04:01 PM Author: kai
I think this is a common feature of electronic ballasts. So it should be no rocket science to use this detection not only for shutting down a failing lamp but also powering up another one.

And are these equipped for hot restrike? The mentioned German ones are if I recall correct.
trojmiejski
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Aug 14, 2019 at 05:09 PM Author: trojmiejski
I was thinking about the installed gear for some time and I realised that while I understand the general idea, I never had contact with detailed technical info. I would like to get it at some point. I'm curious how engineers had done it but I don't know where to find any detailed info that is more comprehensive than the basic facts that are easily available.
I think that this system may be similar to the German one, maybe even identical.
kai
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Aug 15, 2019 at 04:14 AM Author: kai
Well, the design I was talking about is for a single lamp and kind of a small asymmetrical floodlight. Not this amount of backup, which is really generous, considering that at least two lights are installed anyway, so a lamp failure would still not result in darkness. Unlike a power disruption, of course, hence the required hot restrike.

In general such special luminaires for level crossings are a rather recent development. In the Deutsche Reichsbahn times standard streetlighting gear had been used (montly LBL but also Mesko and VBMK, just what was available).
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