la2151
Member
- Location
- california
HI. wondering if any one is or has been using any types of induction lights? what were your experiences with them? some may call them QL induction lights
Thank you
Thank you
Induction lighting
- Thread starter la2151
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weressl
Esteemed Member
Have used them in chemical plant installations. Good light, color rendering, efficiency and low temperature. Unfortunately weak acceptance in the industry had not popularized this excellent product and will be overtaken by LED's, despite of being a superior product in almost all aspects for industrial lighting. The LED's - because of their wide variation in size and color and mass production in China will overwhelm them soon.
Laszlo is correct. We have about 2300 induction lights that we have installed over the last 3-4 years in a refinery. A chemical plant next door to us has a few each of dozens of different types of induction lights out there, both hazardous location types and general purpose. Right now LEDs are not as good as induction in many ways - the only advantage LEDs have is smaller size. Ballast and lamp manufacturers have abandoned all induction lighting R&D and are putting their R&D money into LED technology, so any fixtures on the market now and into the future are built from a limited selection of existing generator (basically a ballast) and lamp combinations.
Sierrasparky
Senior Member
- Location
- USA
- Occupation
- Electrician ,contractor
Sad to see that happen
Cavie
Senior Member
- Location
- SW Florida
Highway sign lighting has tried some induction lighting but it is very $$$$$.
broadgage
Senior Member
- Location
- London, England
AFAIK, "QL" is a trademark of Phillips Lighting, though the term is often used to denote any induction lighting.
I installed a handfull of these for trial purposes in a retail store, they worked fine but did not find favour as "halogen spots are cheaper"
Here in the UK we have induction lamps that can be retrofitted in a regular lamp socket. Genura lamps made by GE, 220/240 volt, 23 watts, directional and intended to replace wide beam incandescent reflector lamps.
These appear to last for several times the claimed life but are expensive at about ?25/$40 each.
AFAIK they used to be available in 120 volt for the USA market, but no longer.
I installed a handfull of these for trial purposes in a retail store, they worked fine but did not find favour as "halogen spots are cheaper"
Here in the UK we have induction lamps that can be retrofitted in a regular lamp socket. Genura lamps made by GE, 220/240 volt, 23 watts, directional and intended to replace wide beam incandescent reflector lamps.
These appear to last for several times the claimed life but are expensive at about ?25/$40 each.
AFAIK they used to be available in 120 volt for the USA market, but no longer.
Electric-Light
Senior Member
We have Osram Sylvania Dura-One but I've never seen one.
The wide temperature sustained output performance as well as fast start up looks good, but the rated life is only 15,000 hours while regular CFLs can be as high as 12,000.
These are even rated for motion detector use.
The lumen depreciation is considerable at 30% over lifetime, much like LEDs, although I think the higher temperature performance is superior to LEDs.
Unortunately due to the current market preference, LEDs will push these off the edge.
http://assets.sylvania.com/assets/documents/CF041.81fe97a7-464b-4ffb-93a8-a0e48995f1c0.pdf
The wide temperature sustained output performance as well as fast start up looks good, but the rated life is only 15,000 hours while regular CFLs can be as high as 12,000.
These are even rated for motion detector use.
The lumen depreciation is considerable at 30% over lifetime, much like LEDs, although I think the higher temperature performance is superior to LEDs.
Unortunately due to the current market preference, LEDs will push these off the edge.
http://assets.sylvania.com/assets/documents/CF041.81fe97a7-464b-4ffb-93a8-a0e48995f1c0.pdf
mjf
Senior Member
mini lighting seminar
mini lighting seminar
At a recent mini lighting seminar, the presenter said induction lamps are often being used on bridges and parking garages, since they are not affected by vibration and have an 100,000 hr life.
mini lighting seminar
At a recent mini lighting seminar, the presenter said induction lamps are often being used on bridges and parking garages, since they are not affected by vibration and have an 100,000 hr life.
BullsnPyrs
Senior Member
- Location
- Saint Joe, Arkansas
We have used them in several parking lots. Quality has been an issue and varies widely between fixture manufactures. We had good results when installed.
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
There has been increased intrest in induction lighting due to to its long life, a spin off from interest in LEDs long life.
Advantages
Long life 100,000 hours
Nearly instant on
Good color rendition (high CRI)
Good effacy (lumens/watt)
Disadvantages
No lamp, no socket, failure means replacing entire unit
Lamps are large, poor light control - OK if you want a blob of light
Mercury in lamp
Can't dim
As with an light source, its location driven. I used some for exterior wall packs for security lighting.
We are doing a parking garage (good application) they are about $300 each vs LED at $500.
There is one mfg who has a ten year warranty and that includes your labor and lift truck rental for replacments.
Advantages
Long life 100,000 hours
Nearly instant on
Good color rendition (high CRI)
Good effacy (lumens/watt)
Disadvantages
No lamp, no socket, failure means replacing entire unit
Lamps are large, poor light control - OK if you want a blob of light
Mercury in lamp
Can't dim
As with an light source, its location driven. I used some for exterior wall packs for security lighting.
We are doing a parking garage (good application) they are about $300 each vs LED at $500.
There is one mfg who has a ten year warranty and that includes your labor and lift truck rental for replacments.
Electric-Light
Senior Member
The light is expected to be same as fluorescent. Induction *is* more or less a Circline or Rectangular lamp without electrodes and lumen maintenance is similar.
It is more complex than a standard fluorescent lamp since the higher wattage lamp runs at a significantly higher temperature and amalgam needs to be formulated properly to maintain proper Hg vapor pressure which is critical for proper color and efficacy.
http://assets.sylvania.com/assets/documents/FL061.1ef0692b-74b5-4686-a222-befe3937f7a0.pdf (If it 404's on you try later)
If you look at the drawings of lamp element, you'll see tiny horns sticking out, which are cold "cold fingers". Those hold amalgam pellets and the mercury pressure is determined by the temperature of the cold fingers. The fixture is designed to keep them cooler than rest of the lamp. Amalgam allows the lamp to operate at much higher temperature without reduction in output.
The lumen maintenance is similar to CFL. If you look at the percentage left at 10,000 to 12,000 you'll see that its about the same as CFL. CFLs don't depreciate further, because the electrodes fail around this time and lamp stops working entirely.
The life maybe 100,000 hours, but the light output is about 60% of new output. If you were to set the cut off at 70%, its around 60,000 hours. Why 70%? That just happens to be the cut off used for LEDs.
CFLs/induction lose lumen fairly quickly simply because the power density (watts per inch) is much higher than ordinary fluorescent. Even common CFL has the same power density as VHO fluorescent. When you stretch out the spiral 23W which is usually T3 or T4 tube, it's about a foot. It's pretty close to 27W/foot of 215W 96" VHO linear, but remember that with a T4 tube, UV intensity on phosphor blend is much higher.
One thing with arc lamp is that when you have two in parallel, only one will strike at any given time so useful life is effectively multiplied by number of lamps you've paralleled up. There is actually dual-tube HPS design with 40,000 hour life. If you were to inter-twine two CFLs (where having two separate lamps is optically unacceptable) you can get twice the life too.
CFLs, HIDs and inductions are suitable when you need high output from a compact source.
Life, lumen maintenance, and size, pick any two.
Induction offers size and good life, but lumen maintenance is comparable to LEDs.
HIDs are simply unmatched if you want lots of lumen for size. Fairly recent ceramic tube metal halide offers superior lumen maintenance(comparable to CFL) and same life as stanard MH, so they may start popping up in street lights.
Linear lamps usually provide better service when optics design or space constraint don't prevent their use. Their life to failure is around 45,000 hours(which sustains 90% lumen maint. before dying) in 12 hour burn applications which is almost up to par with 50,000 hour/70% of LED and induction.
I think they're great for those 100' tall 8 lamp flower pedestral type fixtures used for street lighting that can not be maintained without closing a major highway. 60% around end of life is pretty comparable to standard MH. Although, 80% maint/20,000 life CMH vs 60%/100,000 life induction depends on cost of maintenance vs cost of energy.
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TechnoEvanGuy
New member
Clarification
Clarification
Actually, Dimming is available in Induction lighting. Yet does present a significant with the large percentage of brokered Chinese induction solutions. Many of those who have attempted to dim induction have failed horribly. (Rapid dissembly of parts). We have tens of thousands of garage fixtures installed with dimming and are steadily increasing deployment of highbay with dimming.
Most induction fixtures provide for replacament of lamp and ballast. However, since labor can be a large component of a lamp/ballast replacement (depending upon age) a complete fixture may be the fiscally responsible option.
Clarification
Actually, Dimming is available in Induction lighting. Yet does present a significant with the large percentage of brokered Chinese induction solutions. Many of those who have attempted to dim induction have failed horribly. (Rapid dissembly of parts). We have tens of thousands of garage fixtures installed with dimming and are steadily increasing deployment of highbay with dimming.
Most induction fixtures provide for replacament of lamp and ballast. However, since labor can be a large component of a lamp/ballast replacement (depending upon age) a complete fixture may be the fiscally responsible option.
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