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OURW2250 converted to HPS

OURW2250 converted to HPS

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OURW fixture in Mosty, originally for two 250W MV lamps it was later converted to one HPS lamp.

IMG_9526_1.jpg IMG_9374.JPG IMG_4501.JPG IMG_3446.JPG

Light Information

Light Information

Manufacturer:Mesko
Model Reference:OURW2250

File information

File information

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Filename:IMG_4501.JPG
Album name:trojmiejski / Lanterns in Poland
Keywords:Lanterns
File Size:181 KB
Date added:Feb 09, 2019
Dimensions:2463 x 1386 pixels
Displayed:40 times
Date Time:2018:07:11 17:52:28
DateTime Original:2018:07:11 17:52:28
Exposure Bias:0 EV
Exposure Time:1/250 sec
FNumber:f 8
Flash:No Flash
Focal length:24 mm
ISO:400
Make:Canon
Model:Canon EOS 1300D
Software:Digital Photo Professional
White Balance:1
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-156098
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kai
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Mar 26, 2019 at 01:33 PM Author: kai
The one OURW with a HPS lamp I knew (as showing up in the distance here) always looked wrong to me...
trojmiejski
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Mar 26, 2019 at 01:57 PM Author: trojmiejski
In Tricity and neighboring places like Mosty, Mechelinki, Dębogórze and many others the conversion of OURW fixtures to HPS was a massive happening and not so long ago there was a huge amount of such converted fixtures. Steadily those converted fixtures started to disappear and now there are just small leftovers of what was once a common thing. One thing to admit is that the optics of glass refractors weren't compatible with clear tubular HPS lamps. While diffused lamps like MV lamps work ok, in case of clear tubular lamps the street isn't lit in an uniform way but there are contrasting bright and dim bands, more light goes sideway than straigt under the lantern. I will soon upload a photo where such banding is visible.
kai
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Mar 26, 2019 at 03:52 PM Author: kai
It is pretty likely that of all the OURW imported by the GDR during the seventies not a single one was ever converted to HPS. The mentioned one should have been used with a retrofit lamp, like all the LBL luminaires around.

A number of replacements even took place already before 1990, although the OURW series was regarded as quality product (unlike the Bulgarian fixtures that rusted away within a few years). An example was Zinnwald, where around 1986 all OURW disappeared and have been replaced by BG 1, the LBL model for HPS 150 watts. In the meantime almost all of these light poles disappeared altogether (and the few ones still standing are most likely disconnected), being superseded by typical residential-area lighting, i.e. small poles with HPS 70 watts luminaires. No heavy traffic at Zinnwald anymore...
trojmiejski
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Mar 26, 2019 at 04:40 PM Author: trojmiejski
In Poland traditions varied between different regions. In Warsaw significant though not that great number of HPS fixtures already appeared in 70's and 80's and MV on some streets can still be found today (though steadily diminishing) while in Tricity MV still absolutely dominated in 80's and change to HPS in 90's was very rapid and very complete (though sometimes high masts were reduced from 10 Mesko OURW with MV to weird combination of 4 Elgo Strada OUS with HPS + 2 Mesko OURW with MV which remained for some years only to later change OURW to Schreder Sintra with HPS, unifying light bulbs but leaving a mix of fixture types). Similarly different attitudes were toward conversion of old fixtures. In Warsaw MV fixtures remained with MV lamps up to today (some single ones with HPS retrofit don't count due to exceptionality) and change to HPS, MH or LED was done by changing whole fixture, no conversions. In many different cities there is similar approach with no conversions though some completed MV eradication quickly or on the contrary lagged behind other cities and had plenty of MV lamps quite recently. In Olsztyn they prefered mass use of HPS retrofit lamps without gear modification. In Tricity OURW fixtures were modified but ORZ-6 and ORZ-7 went to scrapyard. In Nowy Sącz they went for radical approach by going other way around with fixture type selection and hiring a local small company to extensively modify existing ORZ-7 fixtures not only by changing gear but also by applying changes in the bodies which enabled the installation of locally made plastic bowls (ORZ-7 originally were intended to be open fixtures without a bowl).
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