As an LED street lamp manufacturer, what are the basic technical specifications of LED street lamps that consumers care about? Generally speaking, basic technical specifications of LED street lamps are divided into three categories: optical performance, electrical performance, and other indicators. Follow TIANXIANG to take a look.
Optical Performance
1) Luminous Efficacy
Street light efficiency is simply the luminous flux emitted per watt of electrical energy, measured in lumens per watt (lm/W). A higher luminous efficiency indicates a street light’s efficiency in converting electrical energy into light; a higher luminous efficiency also indicates a brighter light with the same wattage.
Currently, the luminous efficiency of mainstream domestic LED street lamp products can generally reach 140 lm/W. Therefore, in actual projects, owners generally require a luminous efficiency greater than 130 lm/W.
2) Color Temperature
Street light color temperature is a parameter that indicates the color of the light, measured in degrees Celsius (K). The color temperature of yellow or warm white light is 3500K or less; the color temperature of neutral white is greater than 3500K and less than 5000K; and the color temperature of cool white is greater than 5000K.
Color Temperature Comparison
Currently, CJJ 45-2015, the “Urban Road Lighting Design Standard,” stipulates that when using LED light sources, the correlated color temperature of the light source should be 5000K or less, with warm color temperature light sources being preferred. Therefore, in actual projects, owners generally require streetlight color temperatures between 3000K and 4000K. This color temperature is more comfortable for the human eye and the light color is closer to that of traditional high-pressure sodium lamps, making it more acceptable to the public.
Color Rendering Index
Color exists only when there is light. Objects appear in different colors under different lighting conditions. The color displayed by an object under sunlight is often called its true color. To indicate how well different light sources reflect an object’s true color, the color rendering index (Ra) is used. The color rendering index (CRI) typically ranges from 20 to 100, with higher values representing true colors. Sunlight has a CRI of 100.
Comparison of Different Color Rendering Effects
In actual road lighting projects, a CRI of 70 or higher is generally required for streetlights.
Electrical Performance Indicators
1) Rated Operating Voltage
This indicator is easy to understand; it refers to the input voltage of the streetlight. However, it should be noted that in actual operation, the voltage of the power supply line itself fluctuates, and due to voltage drops at both ends of the line, the voltage range is typically between 170 and 240 V AC.
Therefore, the rated operating voltage range for LED street lamping products should be between 100 and 240 V AC.
2) Power Factor
Currently, according to relevant national standards, the power factor of streetlights must be greater than 0.9. Mainstream products have achieved a CRI of 0.95 or higher.
Other Indicators
1) Structural Dimensions
For streetlight replacement projects, consult with the customer or measure the arm dimensions on-site. The mounting holes for the lamp holders will need to be adapted to the arm dimensions. 2) Dimming Requirements
LED street lamps can adjust their brightness by varying the operating current, thus achieving energy savings in scenarios such as midnight lighting.
Currently, a 0-10VDC signal is commonly used for dimming control in practical projects.
2) Safety Requirements
Generally, LED lamps must meet IP65 or higher standards, module light sources must meet IP67 or higher standards, and power supplies must meet IP67 standards.
The above is an introduction from LED street lamp manufacturer TIANXIANG. If you are interested, please contact us for more information.
Post time: Aug-19-2025