Photo Gallery

Home > User galleries > Tuopeek > LP Sodium
Return to the thumbnail page FILE 1/6 See next file Skip to end
Linear Sodium GEC SLI/H 60W running on a fluorescent ballast with switch start. This is quite close to the running specs for the lamp but I wouldn't want to leave it on for hours as the ballast does get very hot. It is a nice compact size though and sits nicely under the lamp. Keywords: Lamps

Linear Sodium

GEC SLI/H 60W running on a fluorescent ballast with switch start. This is quite close to the running specs for the lamp but I wouldn't want to leave it on for hours as the ballast does get very hot. It is a nice compact size though and sits nicely under the lamp.

SLI60w.JPG linear200w.jpg Ph90sox2.jpg gec_SOX35.jpg 55sox.JPG
Lamp/Fixture Information
Manufacturer:GEC
Model Reference:SLI/H
Lamp
Lamp Type:Low pressure sodium - linear
Electrical
Wattage:60
File information
Filename:SLI60w.JPG
Album name:Tuopeek / LP Sodium
Keywords:Lamps
Filesize:362 KiB
Date added:Jan 29, 2025
Dimensions:2400 x 1934 pixels
Displayed:8 times
DateTime Original:2025:01:27 17:28:19
Exposure Time:1/500 sec
FNumber:f/11
File Source:Digital Still Camera
Flash:No Flash
Focal length:18 mm
ISO:100
Model:NIKON D3400
Software:Adobe Photoshop Elements 2.0
White Balance:0
URL:https://trad-lighting.net/gallery/displayimage.php?pid=653
Favorites:Add to Favorites

Comment 1 to 3 of 3
Page: 1

Max   [Jan 30, 2025 at 10:52 PM]
Really neat! How far off the ballast specs are you running the lamp?
Tuopeek   [Jan 31, 2025 at 10:41 AM]
It is an ongoing experiment but this arrangement seems my best do far. The lamp current is close to correct with 0.81A versus 0.83A with the ballast but the voltage sits about 12v lower than specification. The SON 50W ballast is the next closest and runs cooler but isn’t as close a match. It looks like the fluorescent ballast has a higher resistive component than the SON ballast so maybe less efficient. So, the hunt for the ideal ballast goes on. As it isn’t used much, other than for demonstration purposes it likely to be fine other than subjecting the lamp to short cycles.
Ria   [Jan 31, 2025 at 01:13 PM]
We run ours from a 50W SON ballast, which seems pretty much on spec. I keep meaning to run it up again and take some measurements. Linear Sodium Lamp

Comment 1 to 3 of 3
Page: 1