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20W solar street light or traditional street light, which is better?

View: 105702/17/2020  

20W solar street light and traditional 220V AC street light, which is better? Many people feel puzzled and don't know how to choose. Following let's analyze the advantages and disadvantages of the two, and see which light is more suitable for our requirements.

20W solar street light on the beach

1. Working principle: ① the working principle of the solar street light is that the solar energy is collected by the solar panel, and the effective lighting time is from 10 a.m. to 4 p.m. (taking the northern summer as an example). The light energy is converted into electric energy, and the electric energy is stored in the prefabricated gel storage pool through the controller. When the sun goes down, the light is insufficient, so that the lighting voltage of the solar panel is lower than 5v When the controller will automatically activate the street light to start lighting. ② The working principle of the 220 V street light is to connect the mainline of the street light from the ground or underground in series, and then connect it with the street light line, and then set the lighting time of the street light through the timing controller, several lights and several turns off.

2. Scope of application: solar street lights are suitable for areas with limited power resources. Because some areas are affected by factors such as environment and construction difficulties, solar street lights are more suitable for this situation. There are also some rural and highway center isolation belt areas. In this case, if the mainline is overhead, it is easy to damage the lights due to factors such as sun exposure, thunderstorm and electric shock Open circuit caused by over aging of wires. If you go underground, you still need a high pipe jacking cost. At this time, solar street light becomes the best choice. Similarly, in areas with sufficient power resources and convenient line connection, 220V street light is a good choice.

3. Service life: in terms of service life, if the LED street light is used and the same brand and quality are the same, I think the 220V street light has some advantages because the LED street light itself is very energy-saving. In this case, although the solar energy does not use the 220V voltage, that is to say, it does not need the electricity fee, but the cost of replacing the battery every 5 years or so is far away The electricity charge of street light is higher than 220V AC (only for LED lights, except for high-pressure sodium lights).

4. Configuration of lights and lanterns: no matter it is AC 220 V street light or solar energy street light, now the mainstream LED light source because this light source has the advantages of energy conservation and environmental protection, super long life, etc., the light pole of rural street is 6-8 meters high, and 20w-40w LED light source can be configured (equivalent to 60w-120w energy-saving light brightness).

5. Disadvantages:

Disadvantages of 20W solar street light ① the battery must be replaced every 5 years or so. ② Battery power affected by continuous rainy days

The disadvantages of 220V AC street light: ① the current of the LED light source can not be adjusted, resulting in the whole lighting period is full power, in the latter half of the night when not too much lighting brightness is still full power, waste of energy. ② As long as there is a problem in the main cable of the light, it is difficult to deal with it (underground and overhead are troublesome). If there is a short circuit, it has to be checked one by one. The light one can be connected and repaired, and the heavy one needs to replace the whole cable. ③ Because the poles are made of iron and steel, the conductivity is very strong. If the power is connected on rainy days, the 220V voltage will endanger life safety.


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