How To Choose The Power Of LED Street Lamp
2022-06-10
VIEW "1862
Street light projects, including urban main roads, industrial parks, towns, viaducts and other street light transformation projects, how should the contractor, enterprises, owners choose the street light wattage, and the general LED street light is how many watts?
The power of LED street lamps is generally 20W-300W, but the general road LED street lamps are small power, such as 20W, 30, 50W, 80W.
The normal street lamp is 250W metal halide lamp, while the high-power LED street lamp should be less than 250W. High-power LED street lamp, as its name implies, is a lamp with a single power of more than 1 watt and a new type of LED semiconductor light source.
At present, the standard of LED street lamps is generally the average illuminance of the uniformity of road surface illuminance of 0.48, which is greater than the national traditional standard of 0.42, and the spot ratio is 1:2, which is in line with the road illuminance. (Actual 1/2 central light spot reaches 25LUX, 1/4 central light intensity reaches 15LUX, the lowest light intensity 16 meters away is 4LUX, overlapping light intensity is about 6LUX).
At present, the market street lamp lens material is improved optical material, transmission rate ≥93%, temperature resistance -38-+90 degrees, UV resistance, yelosis rate 30000 hours without change and other characteristics. It has a very good application prospect for new urban lighting. The depth of the dimming, color and other characteristics do not change with the dimming.
Under normal circumstances, when we buy LED street lamps from street lamp manufacturers, there will be professional and technical personnel to design street lamps for you. The technicians and salesmen of street lamp manufacturers have rich experience in street lamp engineering applications.
The following methods are for reference only:
1. Test area
The test road is 15 meters wide, the street lamp is 10 meters high, the lamp arm is 1 meter on the elevation angle of 10 degrees, the street lamp is tested on one side; The test area is 15mx30m. Considering that narrow roads have low requirements for transverse light distribution of street lamps, 12mx30m data of the application area is provided for reference and selection of roads of different widths.
2. Test data
The data is the average value of the three times, and the light decline is calculated according to the results of the first and third times. The time span is 100 days.
3. the application of light pass, light efficiency, illumination uniformity evaluation
The calculation formula of optical efficiency is optical pass divided by input power
The calculation formula of optical pass is average illuminance x area
Illuminance uniformity is the ratio of the minimum illuminance and the maximum illuminance of the measurement points in the transverse direction of the road
In the application of street lamp engineering, how many wattage street lamps should be installed on the road should be combined with the street lamp effect of the manufacturer.