Low Pressure Sodium lamp en en for particularly high luminous efficacy in street lighting.
Cap-Base BY22D [ BY22d] Operating Position P20 [ Parallel ±20D or Horizontal(HOR)] Life to 5% Failures 6000 h Life to 20% Failures 12000 h Life to 50% Failures 18000 h Luminous Flux (Rated) 32000 lm Lumen Maintenance 2000 h 90% Lumen Maintenance 5000 h 80% Correlated Color Temperature 1800 K Luminous Efficacy (rated) 176 lm/W Power (Rated) 180 W Lamp Current (EM) 0.78 A Voltage 240 V Dimmable No Energy Efficiency Label (EEL) A++ Mercury (Hg) Content 0 mg Energy Consumption kWh/1000 h 203 kWh Bulb Temperature (Max) 150 °C Cap-Base Temperature (Max) 150 °C Overall Length C 1120 mm Diameter D 66 mm
Benefits • High luminous efficacy leads to low energy consumption
Features • Uniform sodium distribution in the discharge tube by means of dimples for a more stable discharge, higher efficacy and better lumen maintenance and lamp life • Monochromatic yellow color with non-existent color rendering
Applications • Road lighting, railway marshalling yards and crossings, airports, harbours and docks, quarries, foundries and rolling mills • Security and orientation lighting