GEC 200w SLI/H Lit

Lit this today for the first time since acquiring it. It works fine as you can see. This is the first low pressure sodium lamp I've lit in this garage!

GEC 200w SLI/H Lit


Lit this today for the first time since acquiring it. It works fine as you can see. This is the first low pressure sodium lamp I've lit in this garage!

IMG_20190528_151945-1.jpg IMG_20190528_000014-1.jpg IMG_20190528_154304-1.jpg IMG_20190528_153952-1.jpg IMG_20190430_210924.jpg
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Date added:28 May, 2019
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Comment 1 to 11 of 11
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Slyspark   [28 May, 2019 at 05:58 PM]
That'll want a LONG run!
Danny   [28 May, 2019 at 06:07 PM]
Yes about 12 hours. Also when its warm keep it horizontal dont tip it vertical you probably know anyway but just putting it out there
AngryHorse   [28 May, 2019 at 06:38 PM]
150 SON gear Adam? Cool
fluorescent   [28 May, 2019 at 07:35 PM]
Yes 150w SON gear & S16 starter. Ran it for about an hour & then switched it off... I done bad? Also, I've tried a Thorn SLI/H on the same setup and it won't stay lit. Any clues?
FrontSideBus   [28 May, 2019 at 08:14 PM]
The Thorn ones with the “beehive” electrodes shouldn’t be switch started IIRC. I used a normal SOX ignitor on my Thorn one with no issues.
fluorescent   [28 May, 2019 at 08:49 PM]
The beehive electrode one would be a HO lamp wouldn't it?? This one has normal cathodes anyway. It lights with an ignitor but the ignitor continues to pulse? Hmmm...
AngryHorse   [28 May, 2019 at 10:15 PM]
Not necessarily, my 140watt has beehive, but that’s on Thorns original SLI auto leak, however, if you try and run it on low loss ignitor gear, it does the same as you describe, the ignitor constantly fires!, and if you take the ignitor out of circuit, the lamp behaves like a fluorescent tube with no starter, ( ie just a flicker)!
fluorescent   [28 May, 2019 at 10:24 PM]
If you take the ignitor off, the lamp goes out completely? Not sure what's going on, perhaps it does need leak transformer gear
thorncollector   [29 May, 2019 at 10:36 PM]
best to use the following for 200w sli 90w sox choke and 55w sox choke in parallel gives aprox 1.55A and a sx74 or similar i took measurements and compared to a 200w sli ballast very similar i have lit gec and thorn 200w sucessfully using this setup
thorncollector   [29 May, 2019 at 10:38 PM]
the 150w son choke is not suited to the lamp it will overun it sox and sli lamps have similar characteristics so the 90/55w in parallel is ideal
fluorescent   [30 May, 2019 at 12:54 AM]
Thanks @thorncollector, I will try that setup, just need to acquire a 90w SOX ballast and suitable ignitor. I did monitor the power consumption from the mains, my meter was showing 209w IIRC when the lamp ran up to full brightness & 150w SON gear is 1.5A so it seemed okay? Could be wrong, I didn't have an ammeter in series with the lamp so I don't have any accurate readings

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