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      Low-pressure sodium vapour lamps with a U-shaped discharge tube enclosed in a clear tubular outer bulb under vacuum that is maintained by a solid-state getter


      Highest reliability ensures the lowest total cost of ownership
      Stable power consumption through life maintains low energy use and contributes to low cost of ownership
      Extremely high luminous efficacy; the most efficient light sources for road, security and tunnel lighting


      Philips Solid-state Getter (PSG) for highest reliability over life
      Uniform sodium distribution in the discharge tube by means of dimples for a more stable discharge, stable power consumption, shorter run-up time, higher efficacy and better lumen maintenance and lamp life
      Lower heat losses than standard SOX, resulting in even higher lamp efficacy
      Monochromatic yellow color with non-existent color rendering
      Burning position SOX-E 36W: base-up ±110° (universal burning position when luminaires installed in shock-free positions)


      Road lighting, railway marshalling yards and crossings, airports, harbours and docks, quarries, foundries and rolling mills
      Security and orientation lighting

      Warning & Safety

      Lamps may use electronic or electromagnetic control gear
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