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Why there is a glow discharge that strikes in the outerbulb during ignition of this GE LU250/T/40?

Why there is a glow discharge that strikes in the outerbulb during ignition of this GE LU250/T/40?


When the arctube strikes, there is a glow discharge that strikes in the outerbulb, and the arctube flickering strongly during this period. There is very little blackening on the outerbulb, so I don't know why this is happening?

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Date added:Jun 29, 2019
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HU112
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Jun 29, 2019 at 04:51 AM Author: HU112
Probably leaked.

No more cheapy crappy Chinese junk, please.

dor123
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Jun 29, 2019 at 05:00 AM Author: dor123
But there are very little blackening in the outerbulb when off.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

HU112
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Jun 29, 2019 at 07:54 AM Author: HU112
This could be some minor leaks that doesn't affect lamp operation. but this may cause this lamp to fail prematurely.

No more cheapy crappy Chinese junk, please.

Liam
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Jun 30, 2019 at 04:56 PM Author: Liam
Yep arc tubes leaking.

My gallery http://www.lighting-gallery.net/gallery/index.php?cat=11495

Globe Collector
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Jun 30, 2019 at 06:10 PM Author: Globe Collector
Or just poorly made and the arc frame was not outgassed properly or outer bulb not evacuated properly or getters not working properly.....unless you get the lamp out of the luminaire and take a closer look you may never immediately know...however an arc tube leak is by far the most likely.

If it is, then, over time the outer bulb will silver up with both sodium from the arc tube and nickel sputtered from the arc frame.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

dor123
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Jul 25, 2019 at 12:59 PM Author: dor123
Update: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-162267

HU112 and Liam are right.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

Globe Collector
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Jul 25, 2019 at 04:48 PM Author: Globe Collector
It is a very common failure mode for High Pressure Sodiums.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

dor123
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Jul 25, 2019 at 09:45 PM Author: dor123
I don't think that HPS glowing dim orange as a result of leaking, is a normal EOL, at least for standard HPS lamps. I think this is more likely a premature failure, especially if when turned on, the ignitor continue to ignite it for several seconds and during this period, there is a glow discharge in the outerbulb.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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