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Testing 4' Fluorescent Ballasts

Testing 4' Fluorescent Ballasts

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I just tested a number of ballasts that I acquired, mainly from Aaron. These are most of the extra 4' HPF magnetic ballasts I own now, though I have one more green-label Universal that isn't pictured. They're all used and the performance varies. The 446-LR-TC-P provides very good output. My other was in my garage for a while, but it was buzzing loudly and I swapped it for an Advance. I tested this one and was pleasantly surprised to find it to be whisper-quiet... for about one minute. Then it sounded like a swarm of angry wasps had entered the room. Oh well. The newest Advance from 2002 is extremely quiet, but underpowers the lamps a bit more than it's supposed to. The blue-label ballasts must have bad capacitors, considering they significantly undderdrive the lamps.

So it's a mixed bag but I was glad to find I have at least a few good spares. Here are complete specs.

Advance R-2S40-1-TP
Year Made: 1990
Rated Current: 0.73A
Actual Current: 0.74A
Power Factor: 0.97
Light Intensity: 6300 lux
Noise Level: Average

Advance R-2S40-1-TP
Year Made: 1992
Rated Current: 0.73A
Actual Current: 0.71A
Power Factor: 0.98
Light Intensity: 6200 lux
Noise Level: Loud

Advance R-2S40-1-TP
Year Made: 1999
Rated Current: 0.73A
Actual Current: 0.71A
Power Factor: 0.98
Light Intensity: 6100 lux
Noise Level: Average

Advance R-2S40-1-TP
Year Made: 1999
Rated Current: 0.73A
Actual Current: 0.62A
Power Factor: 0.98
Light Intensity: 5900 lux
Noise Level: Average

Advance R-2S40-1-TP
Year Made: 2002
Rated Current: 0.73A
Actual Current: 0.59A
Power Factor: 0.96
Light Intensity: 5200 lux
Noise Level: Quiet

Howard M2/40RS-120
Year Made: 2002
Rated Current: 0.73A
Actual Current: 0.65A
Power Factor: 0.95
Light Intensity: 5700 lux
Noise Level: Average

MagneTek 446-L-SLH-TC-P
Year Made: 1997
Rated Current: 0.75A
Actual Current: 0.74A
Power Factor: 0.98
Light Intensity: 6200 lux
Noise Level: Average

Universal 446-LR-TC-P
Year Made: 1980
Rated Current: 0.8A
Actual Current: 0.79A
Power Factor: 0.98
Light Intensity: 6700 lux
Noise Level: Quiet at first, then loud

Universal 446-L-SLH-TC-P
Year Made: 1987
Rated Current: 0.75A
Actual Current: 0.51A
Power Factor: 0.94
Light Intensity: 4500 lux
Noise Level: Average

MagneTek 446-L-SLH-TC-P
Year Made: 1990
Rated Current: 0.75A
Actual Current: 0.37A
Power Factor: 0.84
Light Intensity: 3600 lux
Noise Level: Quiet

Advance R-2P32-TP
Year Made: 2005
Rated Current: 0.64A
Actual Current: 0.65A
Power Factor: 0.93
Light Intensity 7000 lux (T8 lamp - note higher intensity resulting from smaller diameter)
Noise Level: Quiet

youtube_NmNOfBXYU0g.jpg gespx35.jpg f40ballasts.jpg youtube_QqrPbCIBi_E.jpg

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don93s
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Aug 17, 2014 at 07:57 PM Author: don93s
Nice summary. As I had posted earlier, it appears that post 1980 ballasts are most prone to cap degradation as they started using dry film type.
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Aug 17, 2014 at 08:19 PM Author: TheUniversalDave1
What does lux mean?

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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Aug 18, 2014 at 08:13 PM Author: Patrick
I got the lux values using a light meter app on my phone.

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Aug 18, 2014 at 08:19 PM Author: TheUniversalDave1
But what IS it? The only Lux I've heard of is of the Electro variety.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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Aug 19, 2014 at 08:59 PM Author: Patrick
http://en.wikipedia.org/wiki/Lux

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Aug 22, 2014 at 06:32 AM Author: DieselNut
Interesting that the 2x32 ballast is the only one that drives at (slightly above) rated current. Those are some awesome ballasts! I have several. They drive a 32T8 the way it SHOULD be driven!

Preheat Fluorescents forever!
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Sep 23, 2018 at 04:58 AM Author: Fluorescent05

Interesting that the 2x32 ballast is the only one that drives at (slightly above) rated current. Those are some awesome ballasts! I have several. They drive a 32T8 the way it SHOULD be driven!

And be gentler on the lamps!

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





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Sep 23, 2018 at 09:01 AM Author:

I got the lux values using a light meter app on my phone.

I thought that it would be a good thing to have on my phone except it doesn't have a {censored} sensor.
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Sep 23, 2018 at 09:10 AM Author: sox35

I thought that it would be a good thing to have on my phone except it doesn't have a {censored} sensor.

You'd think the camera would be good for that, wouldn't you. Apparently not

Ria in Aberdeen
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