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LOA yardblaster fluoreX CFL retrofit for 175W MV lamps

LOA yardblaster fluoreX CFL retrofit for 175W MV lamps

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My dad found this for me at a second hand store for $5. Haven't been able to try it, as it has to be powered by a 175W MV ballast, but maybe it can be powered directly from 240V, as it says 240V, 485mA on the lamp base. It does have it's own ballast built in.

youtube_5pSk-jxUvDI.jpg DSC04090.JPG DSC04089.JPG DSC04087.JPG

Light Information

Light Information

Manufacturer:Lights of America
Lamp
Lamp Type:self ballasted CFL
Base:E39 mogul
Fixture
Ballast Type:H39 175W MV ballast, (or M59 175W MH ballast)
Electrical
Wattage:65W
Voltage:Says 240V
Current:485mA
Optical
Color Temperature:3500K IIRC
Color Rendering Index:high 80's
Physical/Production
Factory Location:USA
Fabrication Date:90's

File information

File information

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Filename:DSC04089.JPG
Album name:SOX55W / Fluorescent
Keywords:Lamps
File Size:393 KB
Date added:Jan 25, 2012
Dimensions:2048 x 1536 pixels
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dor123
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Jan 26, 2012 at 04:52 AM Author: dor123
It may be operated on a H39 MV ballast or a M59 175 probestart MH ballast, but it will give you similar output to a theoretical 65W MV lamp.
According to what Medved said in this post , the efficiency of large CFL sold in his country is 40-50 lm/w: Similar to the efficiency of MV lamps.
So if you want a CFL to produce the same amount of light as a 175 MV lamp, you should use a 175W CFL.
This is one of the reasons why i always shocked, when i see many MV and HPS being replaced by CFLs in posttop and globe lanterns in Israel.
I already commented to one of the workers of the storage of Carmel hospital, that they should return the 125W MV to their globe lanterns, or the globes will produces much less light with their current CFLs, and that they willn't save any energy, and will actually increase the power consumption, as the CFL have less life than a quality incandescents in most cases.
I also said him, that if they want to get the same amount of light as the 125W MV lamps with a CFL, they should buy 125W CFLs.

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.

SOX55W
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120V 60Hz here!


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Jan 26, 2012 at 05:30 AM Author: SOX55W
Yeah, in order for this to be a one to one retrofit, it would need to have an efficacy of over 100 lm/w, which is not true. It does list the lumen output, but I don't remember what it is and I don't have it with me.

People are just stupid is all I can say. They just make up these ridiculous claims and people believe them. Just tell the straight story and let people decide whether they want the option of reduced light for less energy consumption.

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

rjluna2
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Robert


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Jan 26, 2012 at 06:24 AM Author: rjluna2
Did the LOA advertise the lumens on this bulb? That is the trouble when you compare the lumens output of the 175 Watt MV bulb.

Pretty, please no more Chinese failure.

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Jan 26, 2012 at 06:45 AM Author: Skiller
I agree it's simply impossible for a 65W CFL to produce as much light as a 175W MV lamp (clear or coated). The light output will be significantly reduced but it might be still sufficient in some applications...but then again in such cases one should have fitted a lower wattage MV in the first place. But as far as I know (correct me if I'm wrong) you guys in the US have a hard time getting MV lamps of less than 175W!?
dor123
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Jan 26, 2012 at 07:51 AM Author: dor123
Wait... This lamp operates on a MAGNETIC CWA ballast for 175 MV lamps. This should be rendered the system as preheat, so this lamp should have an electronic starter in the base. Electronic starters being already simple to build in a high quality cheaply programmed start, have much longer life than a complete electronic ballast. So this lamp should have a longer life than most CFLs, as it have only a starter in the plastic (But if the 175 MV ballast have enough OCV to ignite the lamp in cold cathodes, but this i'm not sure, as CFLs have krypton in their buffer).
But again, the primery application for this lamp, is for reduced light in security lighting, if the light from the 175W MV lamp is too high, and upgrading to a 100W or a 40/50W MV lamp is expensive (As this requires replacing the ballast as well).
The fact that it operates from an external ballast, shouldn't rise its efficiency, because of its shape, that absorbs much of the light into the lamp, and of course that it designed to be as compact as possible.

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.

SOX55W
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120V 60Hz here!


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Jan 26, 2012 at 10:10 AM Author: SOX55W
@rjluna It did have the lumen output on the back IIRC, but it's at home and I'm at school for now and I don't remember what it was.

@dor123 As far as I know, this lamp runs on a standard MV CWA autotransformer (I don't think the US used any other type for MV due to lower line voltage). It says it just screws in as a direct replacement for a 175W MV with no wiring modifications. The lamp definitely has a circuit board with a bunch of components inside a large cylindrical vented compartment in the middle of the circle of tubes. It appears to be electronically ballasted, and it says self ballasted on the lamp housing. The system efficacy would suffer having the MV ballast driving it.

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

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Jan 26, 2012 at 11:48 AM Author: icefoglights
The efficiency of these is actually worse. They are just a standard 240v CFL, and they will run straight off 240v mains. The internal circuitry is the lamps ballast, and it only uses the mercury ballast as a step-up transformer. I think these will only run off HX mercury ballasts common in home use, and are not meant for CWA style ballasts, more common in commercial use.

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dor123
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Jan 26, 2012 at 11:51 AM Author: dor123
This lamp probably have a resistant correcting PCB, that allows the 175W CWA ballast to not damage the lamp.
You have also HX ballasts not only CWA ballasts.
So for what the H39 CWA ballast serves, when this lamp is installed?
Update: I see that icefoglights answers my questions.

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.

SOX55W
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120V 60Hz here!


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Jan 26, 2012 at 12:51 PM Author: SOX55W
I didn't know they used 120V HX ballasts in the US, but I guess they have enough OCV to strike smaller MV lamps on 120V mains?

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

icefoglights
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Jan 26, 2012 at 01:57 PM Author: icefoglights
HX ballasts can have very high OCV. I have a 35 watt LPS HX ballast with an OCV of between 450-475 volts and an operating voltage of around 70 volts. The big outside difference between HX and CWA is the CWA has a cap in series with the lamp. The cap helps regulate wattag and corrector power factor.

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Jan 26, 2012 at 07:11 PM Author:
Those "retrofits" don't save money at all. They last much shorter, cost much more, and often are outperformed by the original MV's.
SOX55W
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120V 60Hz here!


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Jan 26, 2012 at 09:00 PM Author: SOX55W
Well, I got it as a unique addition to my collection, not to save anything, other than this lamp from the bin.

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

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May 03, 2012 at 12:42 PM Author: BG101
I would think the light output would be closer to that of an 80w mercury lamp (or possibly 100w?)


BG

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SOX55W
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120V 60Hz here!


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May 03, 2012 at 01:55 PM Author: SOX55W
Well, it's about 4500 lumens, which seems about right from running it. I don't think it is equivalent to 175W.

Bring SOX lamps back!!!

FYI, LED's are NOT the most efficient lighting technology available! Don't know how people keep coming to that conclusion!

My other interests: sports cars, refrigeration, microcontroller projects, computer hardware, and any sort of custom fabrication.

icefoglights
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May 03, 2012 at 03:41 PM Author: icefoglights
A 100 watt lamp is rated at about 4000 initial lumens.

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wattMaster
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Feb 18, 2017 at 10:37 AM Author: wattMaster
Could these bulbs be used in streetlights?

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ace100w120v
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Feb 18, 2017 at 12:07 PM Author: ace100w120v
Probably not on a CWA ballast, but it should work with no trouble on an HX ballast.
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Feb 18, 2017 at 12:12 PM Author: wattMaster
What's the problem with CWA/CWI ballasts?

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Feb 18, 2017 at 12:38 PM Author: Ash
CWA/CWI allways try to get the rated current into the lamp, no matter what (thats why the constant current, and in Mercury lamps, constant current equals constant wattage). The output voltage will rise as much as it takes untill the lamp takes the forced current

Now you take a CWA ballast with 2ish A constant output current, and connect a CFL that is supposed to take 1A. At 240V the lamp would take only 1A. The ballast output voltage rises way above 240V as it tries to force 2A into it no matter what. Bang
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