110-277V Universal Metal Electronic Ballast for SOX 135W Low Pressure Sodium (LPS) Lamps

First, some info that I wish was more clear on the website. The ballast markings say it is rated for 220-240v. I tested it on 120v and it works perfectly. Glow object said they are marked that way because their main market is the EU. The ballast is indeed wide range 120-240v compatible. Moving on, the reason I purchased this ballast was to replace the old advance ballast in my 135w Spaulding Palomar luminaire. The ballast was used with a 135w Osram lamp, I do not have a 180w lamp to test it on. This glow object ballast was in improvement over the old magnetic one in every way. The total weight of my luminaire was cut in half when I replaced the old ballast with this one. The lamp warms up faster, and uses far less energy. With the old magnetic ballast, the lamp was using about 175-180w after completely warming up. With the glow object ballast, the lamp was using about 127-132w after warming up! It should be noted that while warming up, the lamp does pull about 205w with this ballast. This is normal, and drops after a few minutes when the lamp is warmed up. Overall, this is an excellent ballast and I’ll likely purchase another in the future to have as a spare

It worked great on my 135W SOX lamp. The 180W lamp had a few issues: The ballast would ignite it but, after a few minutes, the red LED came on and I had to power cycle it. Then it ran longer and finally stayed on. It seemed to run a bit hot but I would expact that with a 180W lamp on it. The lamp id finally come up but one side, near the electrodes, never got as bright as the rest of the lamp. I only rn this lamp for about 15 mintues and it is a brand new lamp. It is an Osram lamp. The lamp was running perfectly horizontal the entire time. I intend to order several more ballasts, sockets, and a few lamps within a week or so. I have successfully converted 4 small fixtures to 18W SOX (from 150-175W MV/ HID) and 3 Hubbell 400W HID fixtures to 35W SOX using Glow Object ballasts. All work great! I am now concerting a couple Philips and Thorn street lights to glow object ballasts from the original 230V European iron ballasts. I hope to convert a 135W and a 180W lamp as well but do want to better understand what is happening with the 180W lamp and ballast. Finally, I have a couple old Thomas darkroom safelights that I have converted to electronic ballast. These are both 35W SOX. The now 40+ year old ballast run hot and are noisy. The glow object ballast fixes that right up albeit it is very difficult to get inside of those old Thomas safelights to do the work.Patience and tools.....

Awesome