Philips Lighting 400 W Clear Tubular SON-T Sodium Lamp, GES/E40, 2000K, 48mm

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RS Stock No.:
381-8523
Mfr. Part No.:
400SONTPLUS
Brand:
Philips Lighting
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Brand

Philips Lighting

Wattage

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

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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