Philips Lighting 400 W Clear Tubular SON-T Sodium Lamp, GES/E40, 2000K, 48mm
Technical documents
Specifications
Brand
Philips LightingWattage
400 W
Lamp Base
GES/E40
Lamp Shape
Tubular
SON Type
SON-T
Lamp Finish
Clear
Length
283 mm
Diameter
48mm
Luminosity
56500 lm
Luminous Efficacy
137lm/W
Colour Rendering
23
Colour Temperature
2000K
EU Energy Efficiency Rating
A++
Product details
Tubular SON-T
Very good efficiency, low colour rendering, typically Ra20 - 39
Twin Arc versions greatly extend lamp life and allow for hot re-strike after power failure
SON-T Plus offers 20% greater lumen output and longer lamp life
Discharge SON Lamps
These lamps combine high efficiency and long life with an improvement in colour appearance and rendering compared with low pressure lamps. SON lamps emit a golden-white light. The SON-T lamp, with its clear tubular outer envelope, lends itself to applications that demand precise optical control, e.g. floodlighting. The SON-E lamp, with its elliptical glass bulb, inside which a white diffusing coating is applied, suits other applications where such accuracy of light control is not so essential. An ignitor (internal or external) is used to supply the high voltage necessary for lamp strike up. Reliable strike up (when hot, less than 60 seconds) thus is ensured, and a simple choke is used to stop excessive voltage rise. The run-up time can be up to 6 minutes when cold.
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Technical documents
Specifications
Brand
Philips LightingWattage
400 W
Lamp Base
GES/E40
Lamp Shape
Tubular
SON Type
SON-T
Lamp Finish
Clear
Length
283 mm
Diameter
48mm
Luminosity
56500 lm
Luminous Efficacy
137lm/W
Colour Rendering
23
Colour Temperature
2000K
EU Energy Efficiency Rating
A++
Product details
Tubular SON-T
Very good efficiency, low colour rendering, typically Ra20 - 39
Twin Arc versions greatly extend lamp life and allow for hot re-strike after power failure
SON-T Plus offers 20% greater lumen output and longer lamp life
Discharge SON Lamps
These lamps combine high efficiency and long life with an improvement in colour appearance and rendering compared with low pressure lamps. SON lamps emit a golden-white light. The SON-T lamp, with its clear tubular outer envelope, lends itself to applications that demand precise optical control, e.g. floodlighting. The SON-E lamp, with its elliptical glass bulb, inside which a white diffusing coating is applied, suits other applications where such accuracy of light control is not so essential. An ignitor (internal or external) is used to supply the high voltage necessary for lamp strike up. Reliable strike up (when hot, less than 60 seconds) thus is ensured, and a simple choke is used to stop excessive voltage rise. The run-up time can be up to 6 minutes when cold.