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Sylvania Unalux

Sylvania Unalux

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L to R (2) 150w , 360w , 880w
All are NOS, however, the 360w and the 880w both cycle on their mercury equivalent ballasts, WHY ???

DSCN2515.JPG DSCN2460.JPG DSCN2146.JPG DSCN2148.JPG

Light Information

Light Information

Manufacturer:Sylvania
Lamp
Lamp Type:Unalux mercury vapor retrofit lamps
Fixture
Location:my collection
Physical/Production
Application/Use:streetlighting.+ general lighting

File information

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Filename:DSCN2515.JPG
Album name:wide-lite 1000 / HPS lamps
Keywords:Lamps
File Size:568 KB
Date added:Jun 11, 2019
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Date Time:2019:06:11 22:05:40
DateTime Original:2019:06:11 22:05:40
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fluorescent lover 40
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Jun 11, 2019 at 10:12 PM Author: fluorescent lover 40
Cool lamps! As for the issues... maybe the type of ballast (HX, CWA, etc.) you're running them on?

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wide-lite 1000
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Jun 11, 2019 at 10:44 PM Author: wide-lite 1000

Cool lamps! As for the issues... maybe the type of ballast (HX, CWA, etc.) you're running them on?


Thanks ! Both of the 150's ran fine on any H-39 ballast i tried them on . I tried the 360 on the HX in the OV-400 and the CWA (I believe) in the Unistyle 400, it cycles on both. as for the 880, I've tried it on my advance H-36 CWA and the M-47/H-36 in the Wide-Lite and it cycle on both also ! I'm guessing they don't like the CWA ballasts.

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dor123
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Jun 11, 2019 at 11:21 PM Author: dor123
The 360W and 880W have end blackening. Also: penning start HPS lamps, have much faster voltage rise during life than regular HPS lamps, hence their shorter life.
Never run these lamps on CWA, because their voltage rise during life can be dangerous to the ballast. The only mercury retrofit HPS lamps I've aware that suitable for CWA ballasts, are Philips Ceramalux Retrolux, and EYE Sunlux Ace. Both lamps are unsaturated non-cycling, so they don't suffers from voltage rise during life.

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Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

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

wide-lite 1000
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Jun 12, 2019 at 03:29 PM Author: wide-lite 1000
Thanks dor123 !

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Jun 12, 2019 at 03:51 PM Author: streetlight98
Yep, in general, retrofit HPS lamps are only to be used on HX or single coil reactor ballasts.

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wide-lite 1000
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Jun 14, 2019 at 07:03 PM Author: wide-lite 1000
The problem is the 360w cycles even on the OV-400 with it's HX ballast .

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streetlight98
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Jun 14, 2019 at 07:22 PM Author: streetlight98
Must be EOL then. Dor confirmed what I've heard as well, about the retrofit lamps not lasting as long as normal hps lamps. It's too bad though, as you have a nice assortment here.

To resist is to piss in the wind, anyone who does will end up smelling.

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Jun 14, 2019 at 07:50 PM Author: wide-lite 1000
Thanks, I'm wondering if trying it first on the Unistyle's CWA first is what did it in ? I KNOW FOR NEXT TIME !

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streetlight98
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Jun 14, 2019 at 08:24 PM Author: streetlight98
Hmm I'm not sure. I don't have any retrofit hps lamps, though I'd like to know more about them.

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Jun 15, 2019 at 06:29 AM Author: Max.
I agree with dor, the two lamps on the right do not look like NOS, their burner extremities are too dark to be new. The result is that no matter on which ballast you will run them on, the lamp voltage will rise to a too high level and the lamp will extinguish, starting the on-off cycle that you see. Wide-lite 1000, having tried the lamp first on a CWA ballast hasn't caused this problem, those lamps were dead on arrival.
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Jun 15, 2019 at 06:54 AM Author: Ugly1
If I recall correctly, a note warned that unalux-880 lamps were only to be operated on 480 volt reactor ballasts.
There was an interesting article in Electrical Construction and Maintenance Magazine in the late seventies concerning mercury retrofit lamps. A large industrial plant was lit with several hundred twin 400 watt mercury high bay fixtures that utilized a single lead lag ballast. The plant replaced the mercury lamp on the lag side with a 360 watt hps retrofit lamp, and the lead side with a metal halide retrofit lamp. More than doubled the light, saved some money on electricity and had a major improvement in the color of the lighting over straight mercury.
streetlight98
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Jun 15, 2019 at 06:58 AM Author: streetlight98
Hmm retrofit with HPS and MH? That must've been very interesting!

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Jun 15, 2019 at 07:01 AM Author: Max.
I've seen several high-bay installations using a combination of HPS and MH lamps, the result on the ground is really nice but the shorter life of MH lamps is a problem and eventually most of them end up dying well before the HPS lamps, so the illumination gradually turns orange over time if the installation is not maintained properly.
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Jun 15, 2019 at 12:34 PM Author: monkeyface

I've seen several high-bay installations using a combination of HPS and MH lamps, the result on the ground is really nice but the shorter life of MH lamps is a problem and eventually most of them end up dying well before the HPS lamps, so the illumination gradually turns orange over time if the installation is not maintained properly.


In Switzerland it was used to be a common practice to install twin high bay lights with one HPS 250W and one MH 400W (360W) lamp. Most of them were used in sports hall (indoor Tennis or Hockey) but as well in some large scale factories like steel/ paper manufacturing.
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Jun 15, 2019 at 06:39 PM Author: wide-lite 1000
The 880w was new in the sleeve when I got it. It initially ran for about 10 min in the wide-lite before starting to cycle . I saw the warning about only using it on 480v reactor ballasts AFTER I tried it on the CWA ! Next time, read the instructions first! OOPS!

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

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