Solar High Mast Lighting systems are designed to illuminate large areas like junctions, stadiums, and industrial yards using a centralized tall pole and multiple high-power LED luminaries.
### **1. Technical Specifications**
A standard high mast system typically ranges from **12 to 30 meters** in height.
| Component | Standard Specifications |
|---|---|
| **Mast Height** | 12m, 16m, 20m, 25m, or 30m |
| **Luminaries** | 4 to 8 LED Floodlights (typically 100W to 400W each) |
| **Lumen Output** | 130 lm/W to 160 lm/W (system total can exceed 50,000 lm) |
| **Solar Panel** | Monocrystalline or Polycrystalline (400Wp to 1200Wp+) |
| **Battery Type** | **LiFePO4** (Lithium Ferro Phosphate) or Tubular Gel |
| **Pole Material** | Hot Dip Galvanized (HDG) Steel (Polygonal/Octagonal) |
| **Control System** | MPPT Controller with Dusk-to-Dawn & Dimming features |
### **2. Key Components**
* **The Mast:** Fabricated from high-tensile steel plates, joined by stressing equipment (no site welding). It includes a motorized or manual winch system for lowering the "lantern carriage" for maintenance.
* **LED Luminaries:** High-pressure die-cast aluminum housing with IP66 or IP67 ratings for weatherproofing.
* **Battery Storage:** Modern systems often use LiFePO4 batteries mounted either on top near the panels or in a ventilated box at the base for easier access.
* **Solar Array:** Mounted on a custom-designed frame at the top of the mast, tilted at an angle optimized for the specific geographic latitude.
### **3. Design Standards (India)**
For commercial or government projects (like MNRE or SIDCO empanelment), the following standards generally apply:
* **Wind Speed:** Designed to withstand wind speeds up to **180 km/h** (standard for most of India).
* **Galvanization:** Internal and external hot-dip galvanization according to **IS 2629 / BS EN ISO 1461**.
* **Foundation:** High-tensile anchor bolts with a reinforced concrete foundation (M20 or M25 grade).
* **Autonomy:** Usually designed for **2 to 3 days** of backup (autonomy) to ensure light during cloudy weather.
### **4. System Advantages**
* **Wide Coverage:** A single 20m mast can replace 10–15 conventional street light poles.
* **Lower Maintenance:** Centralized maintenance with a motorized winch system means no need for sky-lifts or cranes to change individual lights.
* **Zero Energy Cost:** Operates entirely on solar energy, making it ideal for remote junctions or toll plazas where grid extension is expensive.
