DS9840 OSRAM, DS9840 Datasheet - Page 40

• Manufacturer Part Number: DS9840
• Description: LAMP, DULUX, S, COOL, 9W
• Manufacturer: OSRAM

Specifications of DS9840

• Supply Voltage: 60V
• Base Type: 2 Pin
• Power Rating: 9W
• Luminous Flux: 600lm
• Length: 167mm
• 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
3.3
3.3.1 Suitable OSRAM
Operating on
dc sources
ECGs for DC
operation
Compact fluorescent lamps cannot be operated from DC sources with conven-
tional control gear.
Most ECGs are DC-compatible. The dc voltage must be around the rated mains volta-
ge of 230 V. See information supplied by ECG manufacturers.
Special ECGs such as OSRAM ACCUTRONIC
DULUX
correspond to rated mains voltages (such as the 12 V, 24 V or 48 V sources found in
emergency lighting systems, vehicles and caravans).
In these cases, power is supplied by a battery or batteries. In continuous operation,
the dc voltage must not drop below 11 V (AT 7-9/12 L) or 23 V (AT 7-9/24 L) otherwise
the lamps will be constantly operating in underload mode. This will damage the lamp
electrodes (sputter effect at the electrode).
Manufacturers of suitable control gear for different lamp wattages and battery volta-
ges are listed in 10.2 and 10.3.
Changeover units (emergency luminaires with internal changeovers, known as battery
packs) are offered. These feed the lamps directly on emergency power supply and
interrupt the system circuit between the CCG or ECG and the lamps. These change-
over units for emergency lighting must reliably comply with the parameters for prehea-
ting and for operating the lamps. If operated continously, control gear for emergency
lighting can generate a dc component that may damage the lamp electrodes (under-
load operation of the lamps). This underload operation with a DC component causes
electrophoresis in the lamp. As a result, the mercury migrates from one electrode to
another if the lamp is operated continously. This greatly reduces the life of the lamp. In
this case, OSRAM therefore cannot guarantee the life of the lamp.
OSRAM offers the following ECGs under the ACCUTRONIC
(See Lighting Programme).
®
S/E, D/E, T/E, L and F lamps to be operated from DC sources which do not
®
®
are available which allow OSRAM
®
name for dc operation.
3. Circuits
39