Solarus provides Solar Street lights in 12W, 15W, 20W, 25W, 30W, 40W, 60W and 80W LED power. Integrated Solar Street light consists of a Solar panel and LED luminary with built-in Lithium-ion / Lithium Ferro Phosphate battery (LiFePO4) battery and solar driver card with charge controller. In addition, LED luminary has a motion sensor to increase/decrease the LED light brightness on detecting any movement near the solar light.
As we can mount the solar panel independently in true South facing direction, Integrated Solar Street lights provide better performance than All In One Solar street light. Also, Integrated Solar Street light provides better value to customers in terms of cost as compared to traditional solar street lights. Since the battery is inside the LED light housing in integrated Solar Street lights, this eliminates the need for an external battery box, which is part of traditional solar street lights. Moreover, eliminating the external battery box reduces the chances of battery theft/vandalism. Hence, integrated solar streetlights provide better value to customers without compromising performance.
The solar light with battery can also be used to retrofit existing solar lights where either the solar luminary is not working or the battery has been stolen/exhausted. The customer can still utilize the solar panel from the earlier setup. The solar light with battery can be installed on the existing light shoulder on the pole and connected to the solar panel to resume operation. This retrofit solution helps utilize the remaining value from an earlier installation (thereby enhancing the environmental benefits) and also helps in reducing costs.
Working of a Solar Street Light
On receiving sunlight, the solar panel in solar street light produces electric power (blinking green colour LED indicates the battery charging process during daytime). This power charges the battery during the daytime. After sunset, the solar street light starts glowing automatically. The LED light consumes power stored inside the battery during the daytime. A motion sensor uses an infrared motion sensor to detect any movement around the light (worked explained later). This helps conserve energy and provide better backup, especially in cloudy or foggy weather conditions. Solarus also provides the option in solar light with a battery to switch On/Off the motion sensor functionality. This unique functionality can be requested when placing an order for Integrated solar street light or a solar light with a battery.
Product Construction
The solar luminary has Aluminum pressure die cast (PDC) housing, which is completely waterproof (IP65 rating) and suitable for use outdoors. The housing contains LED light card, solar driver card with PWM / MPPT charge controller, battery and motion sensor. We use BRIDGELUX / OSRAM 3030 1W 80 CRI LEDs with 50,000 hours of guaranteed performance. Our solar driver card is STM8 microprocessor controlled and has PWM / MPPT Solar charge controller with a DC LED driver.
Integrated solar street lights are supplied with Lithium-ion (11.1V or 14.8V) or Lithium Ferro Phosphate batteries (LiFePO4 12.8V) with 2-year and 5-year warranties, respectively. The PIR motion sensor in Solarus lights can detect movement up to 12m, and we use only Panasonic makes. The aluminium housing of solar light with battery cools by natural convection for long product life. Integrated Solar street lights are MNRE / NISE / govt lab approved and supplied with IEC-certified Solar panels (25-year standard warranty). We use only BIS-approved batteries for our products.
Working of Motion Sensor
We use Panasonic to make a PIR motion sensor with a 12m sensing distance. The motion sensor detects movement near the solar light and controls the light brightness intelligently, and helps in improving product performance. On detecting any movement, the light glows at 100% brightness. If no movement is detected for more than 1 minute, the light is dimmed to 50% brightness. The solar light housing is cooled by natural convection and keeps LED PCB temperature within limits for long product life.
We supply Integrated solar street lights with panels and batteries incorporating all requirements for supply in commercial / Government projects and solar street light tenders. Since we have our R&D department and the technology used is indigenous, we can customize Solar street lights for any specific features required by our customers. Hundreds of Integrated Solar Street Lights have been supplied and installed in Nagpur and central India, and we are proud to maintain a 100% customer satisfaction rating.
