All In One Solar LED Streetlights are a fully integrated, solution for any off-grid, free from Eskom, requirement. Operating 100% independently on their own power these units come complete with all the standard quality components including: Bright LED Chips, IP65 Casing, Built-In Invertor, Lithium Ion Battery and Solar Photovoltaic (PV) Panels. Besides being easy to install, so that you'll use zero power requiring zero maintenance once they are up and running, these premium LED Solar Streetlights are designed with 21st century engineering that is intelligent. Solar radar sensors ensure that each solar street light automatically turns on and off while adjusting the light outputs from the LEDs to optimise performance and power maintenance.
Solar street lights are fully independent systems that don’t require mains power supply. They operate by using power stored in a battery that is recharged by a solar panel. A solar panel is used to recharge the battery during the day so that the street light can operate during the night. A true Solar LED Streetlight solution should allow for 100% independent operation and must include the solar PV cels, battery, invertor, LED light source all within IP65 rated casings for outdoor applications.
The main benefit of a solar street light is that they don’t require mains power to operate. This allows them to be installed in areas where there is no power available or where the costs of getting the power to the street light would be too expensive. Another major benefit, even if there is mains power available, is that solar street lights operate from the energy from the sun so will not have any electricity costs once installed - enjoy 100% energy avings! Also, because they are off-grid, they will continue to work even if surrounding areas are experiencing power outages.
Solar street lights can be used anywhere you are looking to illuminate outdoor spaces. The most popular applications are Walkways, Roadways, Rural Areas, Parking Areas, Shopping Centres, and Security Lighting.
It is not recommended to install solar street lights where there is a lot of shade from surrounding buildings, trees or structures during the day as this will reduce the amount of solar energy the battery will receive during the day which may cause premature battery failure over time.
Yes, solar street lights can replace existing HID street lights. Care must be taken to ensure the lumen output of the solar street light matches or exceeds the current HID street light output. The existing pole also needs to be checked to make sure it is strong enough to accommodate the additional weight of the solar LED street light.
The brightness of any light source is given in Lumens or Luminous Flux. This should be available on the specification sheet of the street light you are looking at. This is the most important specification to look at to compare the brightness of different lights. The wattage of the light and the solar panel will not tell you how bright the light is.
There are many Solar LED Street lights available on the market with different designs and drastically different prices. Good quality solar street lights should last for at least 5 years and come with a 5-year warranty. Cheap, low quality solar street lights with may only last 1 year, if that. Well designed solar LED street lights use quality components and the solar panel, battery, and LED have been well balanced. The solar panel can provide enough energy to properly recharge the battery every day. The battery is big enough to allow the street light to operate with 3-5 days of cloudy or rainy days. The LED modules are very efficient to minimise the electrical load on the battery while maximising light output.
A major consideration and it is advisable that you dont show around on price... Major things to look out for: 1. If the product does not come with a solid warranty or if the warranty is only for one year, this is a strong sign that the product is of poor quality. 2. If there is no indication of the size of the components or the lumen output of the LEDs you cannot tell if the product has been designed correctly and is generally a bad sign. 3. If the battery type used is anything other than LiFePO4 (lithium iron phosphate) then it is likely that the product won’t last for long before the batteries need to be replaced. LifePO4 batteries are able to handle about 1500 cycles while most other deep cycle batteries only handle about 500. LifePO4 batteries can also be discharged more, are safer and have slower self-discharge rates.
Solar LED Street Lights typically operate in either one of the following ways in order to conserve battery life at night:
1. Motion Sensor – This is where a PIR (Passive Infra-Red) or Microwave motion detector will be used to detect movement. When no movement is detected, the light will operate on a dim setting (usually around 30% output). When movement is detected, the light will turn on to 100% full brightness for a certain time (usually 30 seconds) before dropping down to the dim mode again to conserve battery. This will only happen during the night. Note that motion sensors generally only have an 8-10m range and therefore are not suitable for mounting heights greater than 8m.
2. Night Time Sensor + Time Control – This mode uses a pre-programmed setting which controls how much light should be emitted over the course of a single evening. The most popular setting is:
a. Hour 1 from sunset (say 7pm – 8pm): 30% brightness - As this is sunset/twilight when there is still plenty of light from the setting sun;
b.Hours 2,3,4 & 5 (say 8pm – 12pm): 100% brightness - As this will be the busiest time with most traffic or activity;
c.Hours 6,7,8,9 & 10 (say 12am – 5am): 20% brightness - As this is the dead of night so to speak where there will literally be very little to no activity.
Microwave sensors are more sensitive and can detect movement of different objects and not just heat differences (like PIR). Microwave sensors can also be too sensitive and detect movement of surrounding objects such as trees or fences blowing in the wind. This is not ideal as it will activate the light unnecessarily. If there are surrounding trees or other objects that move in the wind, it is best to use PIR, which will only detect if there is a person or object detected that is warmer than the surrounding ambient temperature.