LED contender: 90 CRI, 40,000 hour 120 LPW CMH HID technology

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Electric-Light

Senior Member
What do I see here? 315W compact ceramic metal halide that puts LEDs to challenge.
40,000 hour life.
38,700 initial lumen with 34,400 mean lumen after 40% hour use.

Input power 341W on 277v including ballast, which brings it to 100 mean lumens per watt.

No way an LED that puts out like 15,000 lumen brand new and hoping that the old system is a probe start with a very bad depreciation will touch that.

It's shaped like a short section of T8 fluorescent rather than a big blob of 400W MH, so it should make the fixtures easier to design for better utilization of light.

There's also a 330W drop-in to replace a normal 400W MH, but it's not as good as the dedicated type.

http://www.usa.lighting.philips.com...Lt-1414BN-MC-CDM-Elite-System-July2014-v3.pdf

http://www.usa.lighting.philips.com/pwc_li/us_en/connect/tools_literature/downloads/220640.pdf
 

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Sahib

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1)May be used in combination with other lamp types to compensate for changes in output light color as it ages.
2)Poses risk of explosion, injury and property damage compared to LED.
 

Electric-Light

Senior Member
1)May be used in combination with other lamp types to compensate for changes in output light color as it ages.

Which makes already expensive LEDs even more expensive.
2)Poses risk of explosion, injury and property damage compared to LED.
Only when it is used improperly. Lamps rated for open fixture is designed with secondary containment to avoid lamp rupture.

315W lamp. 38,700 initial lumen with 34,400 mean lumen after 40% hour use.
Say fixture optics efficiency 90%. If you use the LED world method, this would be rated 111 LPW, because that industry tend to excessively design using new out of box lumens. That LE Decora is about 70 LPW including lumen drop and ballast drop and decay.

LED suffers accelerated decay rate at higher ambient. 55C ambient gives them real trouble. That's not out of line temperature for indoor high bay in unconditioned space. HID technology do not sustain accelerated decay from it.
 
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