Cooper Lighting ADH080747 - Manual (Page 7)

Lamp Type Lamp Orientation Maintained Lumens Life [hrs.] Input Watts Efficacy [lms/w]
1000W Probe Start MH Vertical 82,000 10,000 1080 102
Horizontal 71,500 9,000 1080 97
1000W Pulse Start MH Vertical 96,000 15,000 1100 109
Horizontal 86,000 9,000 1100 98
875W Pulse Start MH Vertical 80,000 20,000 940 106
Horizontal 76,000 12,000 940 101
750W Pulse Start MH Vertical 62,000 16,000 820 100
Horizontal 47,500 12,000 820 83
Beyond efficient light source selection, close-of-business site light dimming offers the next level of energy savings opportunities. On average, site
lighting installations operate for approximately 10 hours each evening. During this time, only 4-6 hours are during actual business hours. Through
close-of-business dimming protocol an average sized dealership could reduce operating expenses related to lighting system energy consumption in
excess of 38%. Cooper Lighting’s Hi-Low dimming option enables increased energy savings through an internally integrated dimming relay that
reduces power while closely maintaining site lighting uniformity levels that ensure safety and inventory protection throughout the site.
Alternating Fixture Switching
Hi-Low Dimming
Off Business Dimming
Average Input Number of Operating Days/ Total Annual Annual
Lamp Type Watts Fixtures 1 Hours/Day Year $/KWH Operating Cost 2 Savings 3 % Savings
1000W Probe Start MH [Full Power] 1080 150 5 365 0.10 $29,565
1000W Probe Start MH [Hi-Low Dimming] 665 150 5 365 0.10 $18,204 $11,361 38%
875W Pulse Start MH [Full Power] 940 150 5 365 0.10 $25,733
875w Pulse Start MH [Hi-Low Dimming] 575 150 5 365 0.10 $15,741 $9,992 39%
750W Pulse Start MH [Full Power] 820 150 5 365 0.10 $22,448
750W Pulse Start MH [Hi-Low Dimming] 498 150 5 365 0.10 $13,633 $8,815 39%
Average Input Number of Operating Days/ Total Annual Annual
Lamp Type Watts Fixtures 1 Hours/Day Year $/KWH Operating Cost 2 Savings 3 % Savings
1000W Probe Start MH 1080 150 10 365 0.10 $59,130
875W Pulse Start MH 940 150 10 365 0.10 $51,465 $7,665 13%
750W Pulse Start MH 820 150 10 365 0.10 $44,895 $14,235 24%
NOTES: 1 A medium sized automotive dealership typically has 150 fixtures on site. If your dealership varies from this size, savings can be calculated using the following multiplier: 0.67 [100 fixtures], 1.33 [200
fixtures], 1.67 [250 fixtures]. 2 Total annual cost is the cost of operating 150 fixtures 5 hours per day with a national average energy cost of $0.10 per KWH. Annual Cost = (Input watts)*(# of
fixtures)*(operating hours)*(days/year)*(KWH/1000). 3 Annual Savings is the money saved by operating 150 fixtures in dimmed operation for 5 hours per day. Annual Savings = (Total Annual [Full Power]
Cost) - (Total Annual [Hi-Low Dimming] Cost).
NOTES: 1 A medium sized automotive dealership typically has 150 fixtures on site. If your dealership varies from this size, savings can be calculated using the following multiplier: 0.67 [100 fixtures], 1.33 [200
fixtures], 1.67 [250 fixtures]. 2 Total annual cost is the cost of operating 150 fixtures 10 hours per day with a national average energy cost of $0.10 per KWH. Annual Cost = (Input watts)*(# of
fixtures)*(operating hours)*(days/year)*(KWH/1000). 3 Annual Savings is the money saved by operating 150 fixtures for 10 hours per day with the listed pulse start lamp over the standard 1000W probe
start lamp. Annual Savings = (Total Annual 1000W Probe Start MH cost) - (Total Annual Cost Pulse Start MH).