As a third-party quality inspector with expertise in LED lighting, I am well aware of the challenge in achieving 190 lumens per watt (LM/W) for LED luminaires like LED High Bay Light. This is mostly because the LED Lighting technology almost achieved its limits.
However, Waichi, an LED Lighting Manufacturer, sent me an LED High Bay Light( Ironman4 LED High Bay) sample recently, they claimed it can achieve 190 LM/W.
Product Pictures
Products: Waichi LED High Bay Light
Brand: Waichi
Brand Parameters
(Note: The data is provided by the supplier, please compare with independent testing results by BackMorning.)
Lumen Efficiency: 190LM/W
Lumen: 43,700LM
Material: IRONMAN4
Rated Voltage: 220-240V
Rated Power: 230W
Color Temperature(CCT): 5,000K
Beam Angle：85°
IP Rating: IP65
Is this real? So this time I test this High Bay Light sample and verify the data.
Normally, we have two kinds of instruments to test the lumen efficiency, one is the Integrating Sphere, the other is Gonio-photometer which can get accurate efficiency data.
Spectrum & Electrical Testing
LED High Bay Light CCT(Color Temperature): 4,847K
Ra: 72.2
CRI: 61.4
SDCM: 2.6
Power: 229.2W
Power Factor: 0.98
Input Voltage: 219.6V
Gonio Photometer Testing
(IES testing/ Light Distribution testing/Darkroom testing)
Total Lumen: 43,299LM 34,512LM 25,724LM
Lumen Efficiency: 189.88LM/W 193.06LM/W 194.70LM/W
Beam Angle：77.8° 78.4° 78.2°
UGR：NO TEST
We have to preheat the light firstly before we start testing because its output lumen is not stable in the beginning ten minutes or thirty minutes.
According to the below picture, we can see:
Every ten seconds, the light intensity continues to reduce.
In summary, we need to preheat the lamp before calculate its optical data.
This LED High Bay Light has three different power settings.
The independent testing results showed:
So I can give a conclusion:
This LED High Bay Light is a real 190 LM/W Product.
Although the first one(189.88LM/W) is a little bit lower than 190, we can give some tolerance and this one its tolerance is very small: within -1%.
I would like to extend my gratitude to Waichi, the manufacturer, for providing a product with such exceptional luminous efficiency.
Why do we test it and show you the details?
We, BackMorning, are selecting more and more good LED lights and manufacturers, and recommend them to the market, to clean the LED Supply Chain, by using our quality skills. We are continuing to fight with the bad quality at the same time.
As a third-party quality inspection company, we are equipped to safeguard the quality of your LED Lighting products. Our services encompass professional quality inspections, sample testing, and assessments of factory capabilities to provide you with peace of mind regarding product excellence.
Email:[email protected]
WeChat: LNY0539
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Web: www.backmorning.com
Hank Wang
Supply Quality Management Professor.
Quality Inspector in Lighting Field and Steel Structure Field.
Certified Welding Inspector by American Welding Society.
15 Years' experience of supplier quality management.
Six Sigma Green Belt.
