How to determine the wattage of high-pressure sodium lamp for street lamps?

High-pressure sodium lamp is a common street lighting equipment, and the determination of its wattage mainly depends on the following factors:

1. Lighting requirements: The required lighting brightness should be considered first when determining the wattage. Different road sections and environments have different requirements for lighting. For example, urban main roads need higher brightness to ensure driving safety, while small lanes can use lower brightness. According to the lighting demand, the required lighting brightness level can be determined, so as to determine the appropriate wattage.

2. Height and spacing of street lamps: The height and spacing of street lamps will also affect the determination of wattage. Generally speaking, the higher the street lamp height, the wider the lighting range, and the required wattage will increase accordingly. The greater the street lamp spacing, the greater the wattage required, so as to ensure that the whole road section can be fully illuminated.

3. Types and efficiency of lamps: Different types of high-pressure sodium lamps have different lighting efficiency. Lighting efficiency refers to the brightness per watt, usually measured by lumens per watt (lm/W). A lamp with high lighting efficiency can provide higher brightness at the same wattage. Therefore, when selecting high-pressure sodium lamps, the lighting efficiency of lamps should be considered to ensure that energy can be saved as much as possible on the premise of meeting the lighting requirements.

4. Energy cost and environmental protection requirements: the determination of wattage also needs to consider energy cost and environmental protection requirements. Higher wattage will consume more electricity and increase energy costs. Lower wattage can save energy and reduce the impact on the environment. Therefore, when determining the wattage, it is necessary to comprehensively consider the energy cost and environmental protection requirements in order to find a suitable balance point.

To sum up, determining the wattage of high-pressure sodium lamp needs to consider many factors such as lighting demand, street lamp height and spacing, lamp type and efficiency, energy cost, environmental protection requirements and so on. In practical application, the most suitable wattage can be determined by professional lighting design and calculation, so as to ensure the best balance between lighting effect and energy utilization rate of street lamps.