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Special dimmable HPS (ST)

Special dimmable HPS (ST)

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OSRAM COLORSTAR DSX-T 80W

Venture_Hie_70.jpg Xenon_35w.jpg City_ds_80w.jpg CPO-TW_90W.jpg

Light Information

Light Information

Manufacturer:OSRAM
Model Reference:DSX-T 80W
Lamp
Lamp Type:Special HPS
Base:PG12-3
Service Life:2600/3000K
Fixture
Ballast Type:Special electronic
Electrical
Wattage:80W /50W
Voltage:34V
Current:2,3A
Optical
Lumen Output:4500Lm
Color Rendering Index:~50%

File information

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Filename:City_ds_80w.jpg
Album name:Vez Lighting / lamps
Keywords:Lamps
File Size:244 KB
Date added:Mar 15, 2013
Dimensions:1539 x 2050 pixels
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dor123
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Mar 15, 2013 at 08:52 AM Author: dor123
This is a HG free white HPS lamp, which can be operated at 50W and 80W. When operated on 50W, its gives 2800K, and when operated on 80W, it gives 3000K.
Since this lamp have no mercury, and when operated with a dedicated electronic ballast, I bet that the color quality and stability, is better than even the japanese Iwasaki SDX lamp (That have mercury), which considered by most, as the best sodium based lightsource on the market, as unlike the SDX, the Colorstar DST have no color shift at all, and it remain the same until the lamp reaches 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.

rjluna2
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Robert


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Mar 15, 2013 at 01:34 PM Author: rjluna2
I never knew there is a dimmable HPS ballast made for the market

Pretty, please no more Chinese failure.

dor123
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Mar 15, 2013 at 02:51 PM Author: dor123
rjluna: It is possible to dim all types of pulse start MH lamps (Both quartz and ceramic) and HPS lamps by a dimmable electronic ballast, similar to fluorescent lamps dimming.

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.

rjluna2
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Robert


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Mar 16, 2013 at 11:20 AM Author: rjluna2
@dor123: Still, it is something new to me that there are indeed dimmable HPS in the market

But, I haven't see other form of dimmable ballast for HID bulbs yet

Pretty, please no more Chinese failure.

Ash
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Mar 16, 2013 at 11:27 AM Author: Ash
Its possible even with multitap magnetic, as tried in East Germany streetlighting by Narva in the 80's and possibly others too. However when you dim a HPS the presue drops and it becomes a SOX in its light spectrum (but not SOX in efficiency due to the difference in construction from a proper SOX). Here the HPS is harshly overdriven to begin with, so when dimmed it moves towards normal HPS color
dor123
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Mar 16, 2013 at 01:44 PM Author: dor123
Our HPS lamps here, aren't overdriven to begin with. I only see here and there, an overdriven HPS lamp with a yellowish white or golden white color.
I never seen streetligthing dimming in Israel.

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.

Ash
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Mar 16, 2013 at 01:52 PM Author: Ash
White SON is overdriven compared to normal SON
BG101
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EYE H80 Mercury Vapour


Brian TheTellyman
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Mar 16, 2013 at 08:11 PM Author: BG101
The electrodes have to be designed for hot-cathode operation whilst dimmed, unlike fluorescent lamps, so it must be a bit of a compromise.

I can see with this lamp that there is better sodium D-line absorption and significantly better (but still rather poor) blue output when run at its higher rating. I wonder what the life expectancy is if used exclusively at either rating? I'm surprised there is (according to the packaging) no gap in the green part of the spectrum, which is usually the case with HPS lamps?


BG

Say NO to DICTATORSHIP in the form of bulb/tube/ballast bans !!

dor123
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Mar 17, 2013 at 11:57 AM Author: dor123
This is only the case with white HPS lamps, where the very wide sodium D line, cause the spectrum to becomes almost continuous, except for a wide dark re-absorption dip in the orange.

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.

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