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Product Ref.: 4050300577586
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High-pressure sodium lamps VIALOX® NAV®-E 4Y®
Extremely economical long-life lamp. 4Y stands for 4 Years.
Benefits
Compared with standard high-pressure sodium lamps:
- Up to 25 % longer life
- Greater reliability
Applications
- Industrial installations
- Streets
- Tunnels, underpasses
- Car parks, courtyards
- Parks and gardens
- Buildings, monuments, bridges
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Base (standard designation)
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E40
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Construction current
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3 A
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Rated wattage
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241.97 W
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EAN40 content (shipping unit)
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12 Pieces
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Length
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226 mm
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Nominal wattage
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250 W
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Diameter
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91 mm
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Nominal wattage (packaging) (calculated)
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250
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Calculated Short Text Product
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NAV-E 250 4Y
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Lamp mercury content
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20.4 mg
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Rated lamp efficacy (standard condition)
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107 lm/W
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Rated luminous flux
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25900 lm
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Nominal luminous flux
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27000 lm
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Rated color temperature
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2000 K
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Rated LLMF at 2000 h
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0.99
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Rated LLMF at 12000 h
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0.97
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Rated LLMF at 16000 h
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0.94
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Rated LLMF at 20000 h
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0.89
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Rated LLMF at 4000 h
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0.99
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Rated LLMF at 6000 h
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0.99
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Rated LLMF at 8000 h
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0.99
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Rated lamp survival factor 8000 h
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0.96
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Rated lamp survival factor 12000 h
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0.93
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Rated lamp survival factor 16000 h
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0.90
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Rated lamp survival factor 20000 h
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0.86
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Rated lamp survival factor 2000 h
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0.99
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Rated lamp survival factor 4000 h
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0.98
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Rated lamp survival factor 6000 h
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0.97
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Operation mode LLMF/LSF
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50 Hz
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Rated color rendering index (Ra)
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26
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