The Obelux LIT series represents a specialized low-intensity obstruction lighting solution uniquely engineered for marking intermediate levels on wind turbine towers. This innovative “through-the-wall” pin light design allows the fixture to be installed from inside the tower via an extremely small hole, significantly simplifying both installation and future servicing. Because all maintenance and replacement work can be carried out internally, it eliminates the need for external climbing or equipment, offering considerable cost and safety advantages—especially for offshore wind turbines where accessibility is a concern.
This light system is built around high-performance LED technology and supports a range of lighting intensities and modes to meet global aviation safety requirements. Optical output includes 10 candela (Type A), 32 candela fixed (Type B), 32 candela flashing (Type E), and a specialized 50 candela configuration designed to meet Netherlands regulations. The emitted light is aviation red, with a built-in 850 nm infrared (IR) component that is NVG (night vision goggle) compliant—making the unit suitable for airspace visibility during both day and night operations.
Engineered to comply with international aviation regulations, the LIT series meets ICAO Aerodromes Annex 14, Volume 1, Chapter 6 standards for low-intensity Types A, B, and E, including wind turbine-specific requirements. It is also compliant with FAA AC 150/5345-43J standards for obstruction lighting (FAA L-810 and L-810F), as well as national guidelines in Germany, Finland, Sweden, Norway, and the Netherlands. This widespread regulatory compatibility makes the LIT series a versatile and trusted solution for wind energy projects across a broad range of jurisdictions.
The LIT series offers enhanced operational flexibility through support for both stand-alone mode and RS-485 Modbus communication protocols. Integrated features include a photocell for automatic day/night switching, fault monitoring capabilities, and optional voltage signal control (5–55 VDC) for red and infrared outputs. An alarm relay is included in every unit, providing dry contact outputs rated for up to 250 VAC or 60 VDC, enhancing system integration for monitoring and fault reporting. For added resilience, the fixtures incorporate built-in overvoltage protection rated to Class III under IEC 61643-11 standards.
Power supply options accommodate both AC and DC environments. AC models operate at 115 or 230 VAC with a 50/60 Hz frequency tolerance, while DC models support a broad input range from 10 to 60 VDC. Power consumption starts as low as 1.5 watts, contributing to energy efficiency. Daisy-chaining of both power and data lines is supported, making the system scalable and easy to wire in multi-light configurations.
Physically, the LIT pin light is engineered for long-term durability in harsh outdoor and marine environments. It features marine-grade aluminum construction with IP66 ingress protection and IK05 impact resistance, ensuring it withstands dust, moisture, and mechanical shocks. A rubber (EPDM) sealing system ensures a secure and watertight interface between the tower structure and the light. A built-in spirit level simplifies alignment during installation. The product operates across a wide temperature range of -40°C to +55°C, and multiple pin tube diameters (Ø18 mm or Ø30 mm) and lengths are available to accommodate varying tower designs. Each unit weighs approximately 3.8 kilograms and includes a standard 5-year warranty, with a 10-year extended warranty available on request.
In summary, the Obelux LIT series delivers a compact, robust, and maintenance-friendly lighting solution tailored specifically for wind turbine tower applications. Its combination of global compliance, high-efficiency LED optics, remote maintenance capability, and advanced control options make it a leading choice for modern wind energy infrastructure.
https://www.obelux.com/en/solutions/led-aviation-obstruction-lights/products/lit-low-intensity-tower-light-series
