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comparsion

Comparison Chart high Pressure Sodium Vs. LED Street Lights
 

Below you can find all the technical parameters of the High Pressure Sodium, HPS, lights versus the LED Street Lights and the pro’s and con’s of both of the lights:
 

High Pressure Sodium Lights vs LED Street Light
 
Items
High Pressure Sodium Lights – HPS
LED Street Light
Photometric Performance
Bad
Excellent
Radiator Performance
Bad
Excellent
Electric Performance
Electric Shock Easy (High Voltage)
Safe (Low Voltage)
Working Life
Short (5,000 hours)
Quite Long (> 50,000 hours)
Working Voltage Range
Narrow (± 7%)
Wide (± 20%)
Power Consumption
Quite High
Quite Low
Startup Speed
Quite Slow (Over 10 Minutes)
Rapid (2 seconds)
Strobe
Yes (Alternating Current Drive)
No (Direct Current Drive)
Optical Efficiency
Low
High
Color Index / Distinguish Feature
Bad, Ra <50 (The Color of object is Faith, Boring, Hypnosis)
Good, Ra > 75 (The Color of Object is Fresh, Veritable and Comportable)
Color Temperature
Quite Low (Yellow Or Amber, Uncomfortable)
Ideal Color Temperature (Comfortable)
Bad Glare
Strong Glare (Dazzle)
No Harmful Glare
Light Pollution
Strong
No
Heating
Serious (>300°C)
Cold Light (<60°C)
Lampshade Turn Dark
Easy (Absorb Dust)
No (Static Proof)
Lamp Aging Turn Yellow
In A Short Time
No
Shockproof Performance
Bad (Fragile)
Good (No Filament Nor Glass)
Environment Pollution
Contains Lead Element Etc.
No
Maintenance Cost
High
Quite Low
Product Cubage
Big
Small (Slim Appearance)
Product Weight
Heavy
Light
Cost-Effective
Low
High
Integrated Performance
Bad
Excellent