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Philips SOX-E 18W running on Fulham WH2 HF IS ballast

Philips SOX-E 18W running on Fulham WH2 HF IS ballast

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A good mug shot of this one. Seems to run fine. Has no trouble starting. Has maybe 50-60 hrs and counting on it running on this ballast and the bulb/electrodes still look new.

DSC03328.JPG DSC03335.JPG DSC03242.JPG DSC03249.JPG

Light Information

Light Information

Manufacturer:Philips
Model Reference:SOX-E18
Lamp
Lamp Type:Low pressure sodium
Base:BY22d
Shape/Finish:T17
Service Life:18000 hr nominal
Fixture
Ballast Type:Fulham WH2 HF IS fluorescent
Electrical
Wattage:18W
Optical
Lumen Output:1800
Lumen Efficacy:100 l/W
Color Temperature:1700K
Color Rendering Index:0
Physical/Production
Dimensions:8.5" MOL
Factory Location:Holland
Fabrication Date:modern, code rubbed off

File information

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Filename:DSC03242.JPG
Album name:SOX55W / SOX lamps
Keywords:Lamps
File Size:283 KB
Date added:Aug 25, 2011
Dimensions:2048 x 1536 pixels
Displayed:372 times
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tuopeek
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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Sep 01, 2011 at 01:23 PM Author: tuopeek
Looks good. I had a 18W Sox running on a electronic ballast recovered from a compact fluorescent lamp. It seemed ok but the lamp had a shorter life than expected. I talk to the local council guys who reckon electronic ballasts on SOX are good but they have had trouble with SON eballasts.
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120V 60Hz here!


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Sep 01, 2011 at 05:23 PM Author: SOX55W
How long did your lamp last? Was the ballast out of the base of a CFL, or a standalone ballast, and what wattage bulbs was it meant for? Was the SOX lamp started alot over its lifetime?

I know SOX lamps can be fairly sensitive to being underdriven, sputtering the electrodes much quicker. They are also rated for only 1 start per 24 hrs(?) run time to achieve full lifetime. More starts will use up the electrodes much quicker because they must be ignited cold, basicly instant start. A high current crest factor for the ballast output can also rapidly wear away the electrodes. I wish fulham published the crest factor for their workhorse ballasts. There is a space for it in the spec sheets, but it's blank...not a good sign. My lamp has about 80 hrs on it with ~18-20 starts and I can see a slight blackenning at the tube ends in addition to the blackenning from manufacture. I don't know how much sputtering is normal for these lamps for this much use. I think I've heard the sputtering can be higher on a brand new lamp due to the large amount of emissive paste caked on the electrodes. Mine is certainly very bright in person, but I think it might be a little underdriven. It doesn't look enough brighter than my preheat start 13W PL cfl to account for ~800 lumens versus 1800 from the SOX lamp.

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Sep 02, 2011 at 01:52 AM Author: tuopeek
I think my lamp lasted a year in an outside fitting starting once a day and running all night. I used the insides out a CFL and I think the lamp was slightly under driven. Interestingly, I ran the lamp on a magnetic ballast for a month first and the deposits around the electrodes started whitish. However they were black when the lamp failed on the CFL electronic ballast.
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Sep 02, 2011 at 01:57 AM Author: dor123
I hope this LPS running horizontal. In this pictures it looks with the base down, which the lamp mustn't be operated such.

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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120V 60Hz here!


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Sep 02, 2011 at 06:35 AM Author: SOX55W
Yeah, it's just resting on my desk. The smaller wattages from 18-55W can run vertical base up, but I think they still do better running horizontal.

I'm starting to see some faint whitish deposits on my 55W, which I believe is driven nearly spot on, but a slight bit of black with no grey on this one. One year is horribly short! About 3500 hrs. I assume it failed due to spent electrodes? Most of the pictures of spent SOX lamps I've seen from normal lanterns are mostly white around the tube ends. Anyone confirm that?

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

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