2015更新能源之星TM-21计算器
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Time (hours)Lumen Maintenance (%)Time (hours)Lumen Maintenance (%)Time (hours)Lumen Maintenance (%)0100.00%0100.00%0100.00%100099.89%100099.83%100099.69%200099.41%200099.22%200098.97%300098.63%300098.41%300097.84%400097.62%400097.34%400096.63%500096.71%500096.35%500095.55%Total number of units tested per case temperature:25600096.19%600095.75%600094.83%Number of failures:0700096.01%700095.42%700094.52%Number of units measured:25800095.82%800095.14%800094.12%Test duration (hours):8000Tested drive current (mA):30Tested case temperature 1 (T c , ⁰C):45Tested case temperature 2 (T c , ⁰C):55Tested case temperature 3 (T c , ⁰C):85Drive current for each LED package/array/module (mA):18In-situ case temperature (T c , ⁰C):50.2Percentage of initial lumens to project to (e.g. for L 70,enter 70):70Time (t) at which to estimate lumen maintenance
(hours):
48,000
Lumen maintenance at time (t) (%):Calculated L70 (hours):
Reported L70 (hours):Results LM-80 Testing Details In-Situ Inputs Instructions
LM-80 Test Inputs
TM-21 Inputs
4 Ft LED T-10 Fluorecent replacement tube Test Data for 45⁰C Case Temperature Test Data for 55⁰C Case Temperature Test Data for 85⁰C Case Temperature Yellow fields are completed by the user. Fields not used should be left blank. Cyan fields are calculated based on user entries.
First, enter a description of the LED light source tested. Then complete the fields labeled "LM-80 Testing Details".Test duration must be at least 6,000hours. If only one case temperature data set is to be used (no
interpolation), complete only "Tested case temperature 1". For only two case temperature data sets, complete 1 and 2.
Next, further to the right, in the
corresponding box(es) for each tested case temperature, enter the test data along with the time (in hours) at which each measurement was taken. Data entered must be normalized then averaged measured data (per TM-21sections 5.2.1 and 5.2.2).
Enter drive current, in-situ temperature data and the percentage of initial
lumens to project to in the fields labeled "In-Situ Inputs".
Results can be tailored to estimate lumen maintenance at a specific time by entering a value (t) in the yellow field.
A complete TM-21 report will appear on the next tab labeled "Report".Description of LED Light Source Tested (manufacturer, model, catalog number)。