DS7840 OSRAM, DS7840 Datasheet - Page 9

• Manufacturer Part Number: DS7840
• Description: LAMP, DULUX, S, COOL, 7W
• Manufacturer: OSRAM

Specifications of DS7840

• Supply Voltage: 47V
• Base Type: 2 Pin
• Power Rating: 7W
• Luminous Flux: 400lm
• Length: 137mm
• Colour Temperature Typ: 4000K
• Svhc: No SVHC (15-Dec-2010)
• External Depth: 19.5mm
• External Diameter: 19.5mm
• External: RoHS Compliant
• Lamp Base Type: 2 Pin
• Rohs Compliant: Yes
• Average Bulb Life: 8000h
• Bulb Diameter: 19.5mm

Economical long-life light sources with plug-in bases.
Compact Fluorescent Lamps OSRAM DULUX
Technical Guide
1.3
8
Economy
Compared with incandescent lamps of similar luminous flux, OSRAM DULUX
consume only one quarter to one fifth of the electrical energy.
OSRAM DULUX
remain switched on for long periods. The following table shows the clear cost savings:
Lamp
Lamp wattage
CCG losses
ECG losses
Total wattage
Luminous flux
Lamp life
(average life for a 3 h
switching cycle)
Hours burned
Power consumption
during 8.000 hours of operation
Electricity costs at € 0,13/kWh
8.000 h
Savings over the life of one
OSRAM DULUX
8.000 h
1)
To this figure must be added the savings in relamping costs. An OSRAM DULUX
used with conventional control gear will last around eight times as long as an incan-
descent lamp, and around ten times as long if it is operated with electronic control
gear. The extra cost of purchasing an OSRAM DULUX
electricity costs after as little as 1000 hours of operation, depending on the wattage.
Cost/benefit analyses can also be carried out with the OSRAM ECOS program (see
OSRAM Lighting Programme on CD-ROM).
Operated on QT-T/E 1 x 18/230-240
®
®
lamp:
lamps are particularly economical in applications where the lamps
®
DULUX
1.150 lm
10.000 h
160 kWh
OSRAM
€ 20,80
€ 83,20
8.000 h
20 W
18 W
2 W
®
-
T/E 18 W
1)
1)
1)
®
DULUX
lamp will be offset by reduced
1.200 lm
192 kWh
OSRAM
€ 24,96
€ 79,40
8.000 h
8.000 h
18 W
24 W
6 W
®
-
T 18 W
Incandescent
8 x 1.000 h
€ 104,00
800 kWh
1.380 lm
1.000 h
100 W
100 W
1. General
lamp
®
-
-
lamps
®
lamp