Kyushu space to answer the technical specifications for the installation of aviation obstacle lights

What are the technical specifications for the installation of aviation obstacle lights?

21.1 Main Control Project

21.1.1 Installation of Building Lanterns must follow specific guidelines to ensure safety and functionality. The top of the building should be equipped with special waterproof lamps, and the lampshade must be securely fastened to prevent water ingress. The wiring should be installed in clear conduits with rainproof features. Connections between pipes, pipe and lamp boxes, metal conduits, and steel cables must be properly grounded (PE) or connected to the neutral (PEN) line to ensure electrical safety.

The vertical lantern suspension arm must be made of channel steel with a size of at least 10#. The hook bolts used for hanging steel cables should have a diameter of no less than 10 mm, and they must be fixed on the channel steel with nuts on both sides. Flat washers and spring washers should also be used to secure the bolts effectively.

The diameter of the hanging wire rope should not be less than 4.5 mm, and the bottom round steel should be at least 16 mm in diameter. For overhead lines, a ground anchor is required, and its burial depth should exceed 1.5 meters. The vertical lantern should use a waterproof lamp head, and the lower lamp head should be positioned at least 3 meters above the ground level to ensure visibility and safety.

21.1.2 Neon Light Installation requires careful attention to detail. The neon tubes must be intact without any cracks, and the lamps should be mounted on special insulating brackets that are firm and stable. After installation, the distance between the lamp and the building surface should be at least 20 mm. The special transformer for neon lights should be of double-ring type, and the length of the provided lamp should not exceed the allowable load limit. Additionally, rain protection measures should be in place if the transformer is located outdoors.

The secondary wires connecting the neon transformer to the lamp should be high-voltage insulated cables with a rated voltage exceeding 15 kV. The distance between the secondary wire and the building surface should also be at least 20 mm to prevent any potential hazards.

21.1.3 Landscape Lighting Fixture Installation must meet strict insulation requirements. Each set of lamps should have an insulation resistance of more than 2 MΩ from the conductive parts to the ground. Floor-standing luminaires installed in crowded areas such as sidewalks should be placed at a height of over 2.5 meters above the ground if there is no fence protection. All metal frames, luminaires, and accessible metal hoses must be reliably grounded (PE) or zero-connected (PEN), and the grounding system should be clearly marked.

21.1.4 Aviation Obstacle Sign Light Installation has specific placement and performance criteria. These lights should be installed at the highest point of the building or structure. If the top area is large or part of a group of buildings, additional lights should be placed at the outer corners. When installed on a chimney, the light should be placed 1.5 to 3 meters below the chimney and arranged in a regular triangular pattern horizontally.

The selection of the luminaire depends on the installation height. Low-intensity lights, typically used below 60 meters, emit red light with an effective brightness of over 1600 cd. High-intensity lights, used above 150 meters, emit white light, and their brightness should be adjusted based on background conditions. The power supply for these lights should meet the highest load requirement of the main building. The installation must be secure, and provisions for maintenance and replacement of the light source should be included.

21.1.5 Garden Light Installation must adhere to specific standards. Each set of lamps should have an insulation resistance of more than 2 MΩ from the conductive parts to the ground. Column-type street lamps, floor-standing street lamps, and special garden lamps should be firmly fixed, with all anchor bolts in place. The junction box or fuse box of the luminaire should have a complete waterproof gasket.

For metal posts and luminaires, reliable grounding (PE) or zero connection (PEN) is required. A main grounding line should be installed, forming a ring network along the position of the garden lamps. This line should connect to the grounding device at no fewer than two points. The branch lines from the main line should be connected to the metal lamp post and the ground terminal of the lamp, with proper markings for identification.

21.2 General Items

21.2.1 Building Light Installation must meet several requirements. The lampshade at the top of the building should be intact without cracks, and the lanterns and wires should be well maintained, laid straight and flat.

21.2.2 Neon Light Installation should follow specific guidelines. When mounting the neon transformer, it should be placed at a height of at least 3 meters. If the height is below 3 meters, protective measures must be taken. The installation location should allow easy access for maintenance and should be placed in a concealed area that is not easily reachable by non-maintenance personnel. It should not be installed inside the ceiling.

If windows are equipped with neon lights, interlocking devices should be installed between the window door and the primary side switch of the neon transformer to ensure the door cannot be opened while the transformer is powered. The secondary wires of the neon transformer should be supported by glass insulators, with support points spaced no more than 0.5 meters apart for horizontal segments and 0.75 meters for vertical segments.

21.2.3 Landscape lighting fixtures must be securely fixed, with all anchor bolts tightened and spare caps present. Any exposed wires or cables should be protected using flexible metal conduits to prevent damage.

21.2.4 Aviation Obstacle Sign Light Installation should ensure that the horizontal and vertical distances between lamps on the same building or group do not exceed 45 meters. The automatic on/off control system of the luminaire must operate accurately to ensure consistent performance.

21.2.5 Garden Light Installation must include accurate automatic on/off control systems, and each set of luminaire fuse boxes should have complete fuses that match the lamp specifications. Street lights on overhead poles should be securely fixed, with all fasteners in place, properly tightened, and the lamp positions correctly aligned. Each set of lamps should also have fuse protection for added safety.

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