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Running the Sylvania 400W HPS Lamp Here it is running off my S54 M-250CF. Yeah, being run around 25% power, but it lit up lol. It made the ends blacken a little but when this is ever run on an actual 400W HPS ballast, the sputtering will disappear. Keywords: Lamps

Running the Sylvania 400W HPS Lamp

Here it is running off my S54 M-250CF. Yeah, being run around 25% power, but it lit up lol. It made the ends blacken a little but when this is ever run on an actual 400W HPS ballast, the sputtering will disappear.

gol61612_001.JPG DSCF0010~6.JPG ep050215_001.JPG gol073014_002.JPG 073016_054.JPG
File information
Filename:ep050215_001.JPG
Album name:Mike / My Lamps
Keywords:Lamps
Filesize:229 KiB
Date added:May 04, 2015
Dimensions:2048 x 1536 pixels
Displayed:214 times
Color Space:sRGB
DateTime Original:2009:03:27 02:58:28
Exposure Bias:0 EV
Exposure Mode:0
Exposure Time:1/6 sec
FNumber:f/2.8
Flash:No Flash
Focal length:28.8125 mm
Light Source:Unknown: 0
Make:Vivicam
Model:V5024
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=19296
Favorites:Add to Favorites

Comment 1 to 10 of 10
Page: 1

GEsoftwhite100watts   [May 04, 2015 at 12:52 AM]
You do have a 400w ballast right?
Who makes the ones with the green dimple? Philips? I have one like that but in a Sylvania sleeve, evidently it's not Sylvania though! (The one I was asking about using to test the 250w HPS M-400A)
streetlight98   [May 04, 2015 at 11:42 AM]
Yep but it's huge and a PITA to move around. It's also serving as a counterweight for the light pole in my room.

Green dimple is Altos just like with fluorescents. Sylvanias lamps still look like above with the BT-style supports for the arctube support.
GEsoftwhite100watts   [May 04, 2015 at 03:46 PM]
OK so mine is an Alto then. Interesting/weird! I'm sure it's still a perfectly good lamp though. Laughing
streetlight98   [May 04, 2015 at 07:30 PM]
Yep it's a Philips Alto. The operation of the lamp doesn't change like with fluorescent (doesn't start off mercury starved lol) but reduced Hg HPS lamps do not last nearly as long. Alto HPS lamps suck. You'll get maybe three years out of it. Sad
GEsoftwhite100watts   [May 05, 2015 at 12:51 AM]
Well where this one will be used it probably won't see nightly/all-nightly use. (A pair of Hubbell 400w HPS floods my dad has)
streetlight98   [May 05, 2015 at 02:04 AM]
Ooo your dad got a couple HPS floods? Has he had these for a while or just a recent acquisition?
GEsoftwhite100watts   [May 06, 2015 at 03:30 PM]
Last few months...boat lights...
streetlight98   [Oct 23, 2015 at 08:15 PM]
Actually, correction to my above comment. The operation is affecting with the fact that less mercury means the sodium will vaporize more quickly. Dunno if that's bad, but I believe the mercury is used to slow the evaporation of the sodium so that it doesn't vaporize too quickly. Not sure if there's a reason the vaporization needs to be controlled, but that's why HPS lamps with more mercury take longer to turn orange.
GEsoftwhite100watts   [Oct 24, 2015 at 01:54 AM]
Plus they have a prettier startup. Laughing
I need to test my two 1000w HPS lamps and ballasts, I've had them for five years now and barely even looked at them. Laughing
streetlight98   [Oct 24, 2015 at 03:03 AM]
Yes they do. Smile Oh wow the suspense would kill me if I had ballasts or lamps that long without testing them. Laughing

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