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DM High Bay and Low Bay Long life fluorescent lamp |
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Self
Ballasted Lamps
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Use Electronic Ballasts to Convert Electric Power
to Light More Efficiently
 Resulting in Higher Light Output
Faster Start Up
Reduced Flicker & Hum
High Frequency Operation (20-60 kHz)
Completely Eliminates the Need for Costly
Ballasts & Ballast Replacement Labor Costs
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Voltage
Requirements
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Types:
 Universal
Dedicated
Universal 120 Volt
277 Volt
55, 75, 90, & 105 watt bulbs can all be used in all voltage
environments
Dedicated High Output
120V, 208V, 277V, 480V
150 & 200 watt bulbs are built for use in a specific voltage
environments
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Power
Factor
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Definition: Measure
of how effectively a device
converts
input current and voltage into useful
electrical
power.
 PF= Watts divided by Volts minus Amperes
Maximum PF Achievable is 1.0
Normal PF = Between 0.50 & 0.90
High Power Factor = > 0.90
All DM Fluorescent Lamps Have a Power Factor
Greater than 0.90
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Color
Rendering Index (CRI)
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Definition: Ability of light source to
show colors realistically (as compared to incandescent)
 Range from 0-100 (Higher is Better)
CRI is calculation-the human eye cant discriminate fine differences in
CRI
CRI INDEX
Linear Fluorescent Tubes
Cool White CRI = 62
Warm White CRI = 53
Most T8 Tubes CRI = 70-87
Most T12 Tubes CRI = 60-75
CRI INDEX
 Incandescent CRI = 100
Metal Halide CRI = 60-70
Energy Star Requirements
CRI Greater than 75 on Linear Lamps
CRI Greater than 80 on Compact Fluorescent Lamps
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DM
Lamps CRI
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Correlated
Color Temperature (CCT)
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Definition: Measures how cool or warm the
light appears
 Units = Kelvin
Common Lamp colors 2700k, 3000k, 3500k,
4200k, 5000k, 5500k, & 6400k
Below 3500k = Warm Yellowish- White Light
Between 3500k 5000k = Neutral
5000k 6400k = Cool Bluish-White Light
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DM
Flexible CCT Lamps
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DM Lamps are designed to allow for flexible CCT
Ratings
 Mix of Phosphor Coating Allows Lamps to Range from 2700k to 6400k
Flexibility for optimal lighting color
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DM
Lumens
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Definition: Light emitted by a
source in all directions
 It expresses total light output of a lamp
A lamp has only one lumen output rating
Fluorescent Lamp Tube
Efficacy
18W to 27W = 59 to 77 Lumens per Watt
34W to 55W = 70 to 89 Lumens per Watt
Common Linear Tube
Ratings - T12 Lamp
25W = 1925 Initial Lumens
34W = 2650 Initial Lumens
40W = 2875 Initial Lumens
Common Linear Tube
Ratings T8 Lamp
32W = 2850 Initial Lumens
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DM
Lumen Ratings
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Have
highest initial lumen ratings of any fluorescent lamps
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Average
Rated Life
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Definition: The number of operating hours
when 50% of a large group of lamps have failed when operated at
nominal lamp & voltage current
DM Long Lasting Lamps
 All Fluorescent Lamps Tested & Rated to 25,000 Hours
Energy Star Rating Must Be Greater than 6,000 Hours
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DM
Labor Savings Lamps
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