Are you considering different street lamp options, but are not sure which one is most suitable? Then take the time to learn more about the different types of street lamps available. By doing so you can choose one that will match the requirements of the street which you need to provide lighting for. With that thought in mind, here are 3 popular street lamps you can choose from:
1. Low Pressure Sodium (LPS)
This is the most efficient street lamp type used today, because it can provide up to 183 lm/w. However, they have a lifetime of 14,000 to 18,000 hours, which is shorter than the other more advanced lamps on the market.
A positive note is that they can provide a much better spread of light over a wide area. On the other hand, high intensity lighting will typically illuminate a narrower range. Another drawback is that it can take up to 15 minutes for the LPS lamps to reach full light intensity.
2. High Intensity Discharge (HID)
A HID lamp requires up to 5 minutes to obtain maximum brightness. When it has reached the level of brightness is typically higher than what other lamps are capable of producing. Therefore, HID lamps are ideal on roads that have been known to be accident prone during dark hours.
If there is a disruption in the power supply to the HID lamps, then they will automatically shut off. The restart time can be in the range of 5-10 minutes, which depends on the specific type of HID lamp used. Another advantage of this lamp type is the long lifetimes, they provide – in the range of 5,000 to 24,000 hours.
3. High Pressure Sodium Lamps (HPS)
This type of street lamp is famous for that golden color effect. It is suitable for street lighting, but not so much for industrial applications where color rendering is required. Just like the HID lights, HPS ones also provide impressive lifetimes. You can expect lifetimes of 15,000 to 24,000 hours.
Furthermore, HPS lamps provide an efficiency rating of 65-140 lumens per watt. This means you can light up your street by using less electrical energy when compared with other lighting options.
However, towards the end of their lifetime HPS lamps begin a process known as cycling. This basically means that they will sometimes shut off, and then turn back on again after 1 minute. This could potentially be a sourced of significant disruption for drivers.
If you are installing street lamps for your city, contact a municipal engineering company for advice.Share