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Re: SLI/H gear alternitives
Posted: Sun Apr 24, 2016 9:34 pm
by jonny-m
Never thought of using 50w son choke. Worth a try.
Re: SLI/H gear alternitives
Posted: Sat May 28, 2016 1:02 pm
by FrontSideBus
Two 80w mercury chokes in parallel is a no-go for the 200w SLI/H's. They should provide 800ma each which is what the 200w lamp wants but again the voltage drops to about 110v and the current increases to about 1.9 amps.
Re: SLI/H gear alternitives
Posted: Mon Jun 06, 2016 8:18 am
by Slyspark
Just saved both an 80w and a 65w Ekco (BLI) pair of ballasts from a couple of superslims. Might have to fire up a pair of 60w SLI/H lamps on them and see which works best....
Re: SLI/H gear alternitives
Posted: Thu Oct 20, 2016 8:06 pm
by thorncollector
i have not had much luck with this, but the real 200w sli ballast runs the 200w lamp at 125v. I took this measurement during my short ownership of a 200w ballast.
50w son choke is ideal for 60w sli I have found it to be spot on. 80v @ 0.8A
Re: SLI/H gear alternitives
Posted: Fri Feb 23, 2018 6:09 pm
by Andy
I know the 50w SON ballast is the best for the 60w SLI/H lamp, it is a very close match.
Re: SLI/H gear alternitives
Posted: Fri Feb 23, 2018 6:18 pm
by Slyspark
In the past, I've always used an 80w fluorescent ballast for running the 60w lamp, but I might have to switch to 50w SON.....
Re: SLI/H gear alternitives
Posted: Fri Feb 23, 2018 6:45 pm
by Andy
Yes, it really works a treat!
As Danny says, the 90w SOX leak transformer or a 140w SO/H or SOI/H leak transformer is perfect for the 140w SLI.
Re: SLI/H gear alternitives
Posted: Fri Feb 23, 2018 7:10 pm
by thorncollector
Hi All, the best i have found are as follows
60w sli - 50w son choke / on switch start with a electronic starter its rated at 0.76A which is pretty close to 60w sli which is 0.80A
140w sli - 90w / 140w leak transformer
200w sli - 90w sox ignitor ballast and 55w sox ignitor ballast in parallel with a sx74 as ignitor.
the sox ballasts being low pressure sodium are much more suited to the sli lamp than son or sunbed ballasts. the run up sli and sox is similar but son is different.
sox / sli start at a high voltage and reduce as the lamp runs up whereas son starts low and increases. btw this gives approx 1.55A to the lamp
hope this helps
Best regards john
Re: SLI/H gear alternitives
Posted: Fri Feb 23, 2018 7:20 pm
by Ash
sox / sli start at a high voltage and reduce as the lamp runs up whereas son starts low and increases
Thats a surprise ! I experimented with Fluorescents and they increase (36W T8, from <70V in the Hg starved initial mode till ~110V fully run up). I sorta expected something similar with SOX
Re: SLI/H gear alternitives
Posted: Sun Apr 28, 2019 7:45 pm
by jonny-m
i think ill give this a go with a 50w son choke as i have one now.