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Swirling Powergroove

Swirling Powergroove


This is one of my F72 power grooves swirling. It is the only tube that behaves like this. It is also the tube that happens to be on the ballast when the ballasts thermal protections tripped. I'm unsure if the ballast is faulty or if the tube caused it.

PSX_20190908_020351.jpg PSX_20190908_020149.jpg dy3gUtlNFKhP40GAqn.gif PSX_20190907_165252.jpg

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Filename:dy3gUtlNFKhP40GAqn.gif
Album name:HomeBrewLamps / FLUORESCENT
Keywords:Lamps
File Size:3128 KB
Date added:Sep 07, 2019
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suzukir122
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suzukir123
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Sep 07, 2019 at 03:21 PM Author: suzukir122
Striating?? Looks more like swirling to me. haha
If so, this is the first time I've ever seen swirling inside a powergroove.
Try turning the light off, leave it off for about 3 minutes, and then turn it back on. Does it still occur after that?
Also, it's not uncommon for old lamps to swirl after not having been in operation
for a very long time.

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Fluorescent05
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Sep 07, 2019 at 06:42 PM Author: Fluorescent05
Maybe this ballast works better with F96s.

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

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Sep 08, 2019 at 01:35 AM Author: HomeBrewLamps

Striating?? Looks more like swirling to me. haha
If so, this is the first time I've ever seen swirling inside a powergroove.
Try turning the light off, leave it off for about 3 minutes, and then turn it back on. Does it still occur after that?
Also, it's not uncommon for old lamps to swirl after not having been in operation
for a very long time.

yeah you're right... stirations are the kindof "flowing" effect tubes get when under driven... I made these tubes do that too during testing if anyones interested however the swirling effect is way more rare. it continues to swirl no matter what I do.. it has variation to it too, from the center it expands outward up to 6 grooves in length then it shrinks to two and repeats, it has a very slow paced transition between lengths and the swirling itself (as you can see in the GIF) is very slow..


@ Fluorescent05 Yeah maybe... I does say it can operate F72's so I figured it is safe... And i was being a fool and wired the ballast wrong which is why the thermal protector tripped... You live you learn!

~Owen

Mercury Vapor LampHigh Pressure Sodium Scavenger, Urban Explorer, Lighting Enthusiast and Creator of homebrewlamps Cool High Pressure SodiumMercury Vapor Lamp

suzukir122
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Sep 08, 2019 at 01:45 AM Author: suzukir122
I'm use to striations mainly occurring on energy saver lamps like 34w, 60w 8 footer slimlines, or 95w 8 footer HO lamps. lol
But yeah the swirling continuing even after the light has been turned off... that's very strange.
Never heard of this kind of situation spawning from a ballast issue. Do you have any more VHO ballasts you can try this
lamp on?

Interests
1. Motorcycles, Women, and Lighting (especially fluorescent)
2. Weighting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Yep
Lighting has been a passion of mine since I was born. I consider everyone on LG to be a friend

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Sep 08, 2019 at 01:55 AM Author: HomeBrewLamps

I'm use to striations mainly occurring on energy saver lamps like 34w, 60w 8 footer slimlines, or 95w 8 footer HO lamps. lol
But yeah the swirling continuing even after the light has been turned off... that's very strange.
Never heard of this kind of situation spawning from a ballast issue. Do you have any more VHO ballasts you can try this
lamp on?

Not at the moment, I could use the ballast from the 8 foot fixture but it is the same brand and type of ballast... I'm running these tubes on HO ballasts as I do not have any VHO ballasts at the moment. that may be part of it. But I have heard from other members that this is safe and it increases the life of the tube...

~Owen

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Sep 08, 2019 at 02:14 AM Author: suzukir122
@Homebrewlamps, I've heard of that too, and that it is safe since the ballast will still see the 8 feet. (T12 VHO lamp on HO ballast) But I
personally have no idea how HO ballasts react to PG17 lamps since the lamps are T17's compared to the average T12 VHO.
That might be why there is swirling... that's true. But I'm not sure of it.

Interests
1. Motorcycles, Women, and Lighting (especially fluorescent)
2. Weighting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Yep
Lighting has been a passion of mine since I was born. I consider everyone on LG to be a friend

dor123
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Sep 08, 2019 at 03:18 AM Author: dor123
Swirling occurs in brand new lamps usually. This can be stopped by turning off and back on the lamp. This don't damages the ballast.
Overheating ballast during a normal lamp operation meaning it is burned, shorted, have a too small core, operated with a wrong lamp current/voltage/wattage, open neutral, no ballast cooling in the fixture, wrong installation in the fixture which don't provides its cooling or a defect in the manufacturing.

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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Sep 08, 2019 at 10:07 AM Author: HomeBrewLamps

Swirling occurs in brand new lamps usually. This can be stopped by turning off and back on the lamp. This don't damages the ballast.
Overheating ballast during a normal lamp operation meaning it is burned, shorted, have a too small core, operated with a wrong lamp current/voltage/wattage, open neutral, no ballast cooling in the fixture, wrong installation in the fixture which don't provides its cooling or a defect in the manufacturing.

The ballast over heating was a mistake on my part... I wired the blue and red wires the wrong way..

~Owen

Mercury Vapor LampHigh Pressure Sodium Scavenger, Urban Explorer, Lighting Enthusiast and Creator of homebrewlamps Cool High Pressure SodiumMercury Vapor Lamp

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