Odd that lamp claims to use an S52 ballast, which is a 1000W HPS ballast. But it also claims 206,000 lm, which would be 137 lm/W which is high but that's pretty reasonable for it's high wattage. Interesting find.

The R7s ones are also have quartz jackets, so they need UV dopants.
Except my Osram HQI-TS 70W/WDL from 1988, all my R7s MH lamps have blue glowing outer jackets. Even my Osram NAV-TS 70W Super 4Y HPS lamp have this glow during the xenon phase.

Yes they are G12 single ended lamps, I didn't know the outer jacket wasn't made with UV-blocking borosilicate type glass. Thanks for explaining it.

The blue glow that you see on the outer jacket of compact MH lamps is the UV dopants that are used to filter the UV radiation, since the outer jacket is made from quartz.

I bought some ceramic metal halides:

• Philips CDM-T 70W/942
• Philips CDM-T 70W/830
• Osram HCI-T 70W/942

And all of them have a visibly blue tint on the glass body that is visible even when not powered on. It makes mild difference to the lamp color when warming up and even at full power it's almost glowing. Is there any reason for this or is it part of manufacturing process?

With Sylvania's BriteArc set of lamps, they use quartz and are medium-arc. Quartz is fine with most halides but is not compatible with sodium-mercury amalgam.
Here is a 1500W lamp, even higher than 1100W: https://www.1000bulbs.com/product/89389/SUN-901692.html

But generally HPS lamps with wattage higher than 1000W were extremely rare, compared to MH lamps which were available up to 3500W, and for the entertainment industry even 18,000W.

  https://www.lighting-gallery.net/gallery/displayimage.php?album=4617&pos=41&pid=120872

Sheeeeeeeesh. You could light the entirity of amsterdam on it and run it from the overhead tram wire!
Maybe put a tram car in series with it to ballast it.

I've had T&B ignitors fail as well. My early 2000s AEL Series 11 has absolutely zero issues, though...
And honestly, I think Cooper would have to take the cake for modern premature failures. They held out till the end, but the stuff they made in the later issues was GARBAGE.

My God... a 50.000W HPS... can't even fathom what 8 million lumens look like...