Why Use High Mast Lighting?
High mast lighting concentrates the infrastructure cost - instead of 50 standard poles to light a large area, you use 5–10 high mast poles. This dramatically reduces: civil foundation work, electrical cabling length, maintenance frequency (light replacement is done by lowering the fixture ring using a winch system - no climbing required), and total pole count in aesthetically sensitive areas like stadiums, airports, and interchanges.
Where High Mast Lights Are Used
Highway interchanges and toll plazas: 25–30m masts, 4–8 floodlights per mast. Stadiums and sports grounds: 25–40m masts, 6–12 high-power flood lights. Ports and container terminals: 30–40m masts for wide-area illumination. Railway yards and marshalling yards: 20–25m masts. Airports (remote parking, cargo): 25–30m masts. Large industrial areas: 18–25m masts for factory yards and logistics parks. APJ Abdul Kalam Stadium at Mira Road (Mumbai) - completed by Xera Tech - is an example of a stadium high mast installation.
Standard Heights and Wattage
18m mast: 4 × 200W floodlights - covers ~2,500 sq.m at 50 lux. 20m mast: 6 × 200W - covers ~4,000 sq.m at 50 lux. 25m mast: 6 × 300W - covers ~6,000 sq.m at 50 lux (highway use). 30m mast: 8 × 400W - covers ~8,000–10,000 sq.m at 50 lux (stadium/port). 40m mast: 12 × 500W or 6 × 1000W - covers ~15,000 sq.m at 100 lux (broadcast sports). Wind load calculation is critical for masts above 20m - must be designed for the cyclone zone wind speed applicable to the project location.
The Lowering System
Unique to high mast poles: the light ring (ring frame holding all floodlights) can be lowered to ground level for maintenance without any climbing. The ring is connected to the top of the mast by stainless steel wire ropes and a winch mechanism. During maintenance, the winch is operated to lower the ring, lights are serviced at ground level, and the ring is raised back. This makes lamp replacement safe, fast (30 minutes vs 2+ hours with a crane), and eliminates the need for a bucket truck.
