IS 7785-1: Elevated type aerodrome lighting fittings, Part 1: General requirements

Scope
This standard specifies the general requirements for elevated type aerodrome lighting fittings used in airports. It covers the design, manufacturing, and testing requirements to ensure safety, reliability, and performance under specific operating conditions. The standard addresses aspects such as structural design, optical performance, electrical requirements, and environmental adaptability.

Terms and Definitions
This section provides definitions for key terms used in the standard, such as “elevated lighting fittings,” “optical system,” and “weather resistance,” to ensure a common understanding.

General Requirements
• Design and Structure: The lighting fittings must be robustly designed to operate reliably in the complex environment of an airport, including resistance to wind, corrosion, and water ingress.
• Material Requirements: Materials used should exhibit excellent aging resistance, corrosion resistance, and mechanical strength, along with high electrical insulation properties.
• Optical Performance: The fittings should provide uniform and appropriate light distribution, minimize glare, and ensure the safety of aircraft and ground personnel.
• Electrical Requirements: Electrical components must have good insulation properties and include protection against electric shock. The fittings should operate correctly within specified voltage ranges.

Environmental Requirements
• Temperature Adaptability: The fittings should function properly under extreme temperature conditions, including both high and low temperatures.
• Waterproof and Dustproof: The protection rating of the fittings should be at least IP55, ensuring functionality under various adverse weather conditions.
• Vibration and Shock Resistance: The fittings must withstand mechanical vibrations and shocks that may occur during installation and operation.

Testing Requirements
• Optical Testing: Evaluate parameters such as light output, color temperature, light distribution, and glare control.
• Mechanical Testing: Tests to assess the structural strength, corrosion resistance, and waterproof performance of the fittings.
• Electrical Testing: Includes insulation resistance, dielectric strength, and tests for performance under high temperature and humidity conditions.

Marking and Packaging
• Fittings should have clear markings, including the manufacturer’s name, model, technical specifications, and installation instructions.
• Packaging should protect the fittings from damage during transportation and ensure safe delivery.

Installation and Maintenance
• Specifies the location and method of installation to ensure optimal light coverage and ease of maintenance.
• Maintenance requirements should include guidance on regular cleaning, anti-corrosion treatment, and light source replacement.

Safety Requirements
• Fittings should comply with relevant airport safety operation requirements, ensuring no harm to aircraft or airport personnel.
• Appropriate safety usage instructions and warning labels must be provided.

Quality Control
• Manufacturers must establish a quality control system to ensure that produced fittings meet the standard’s requirements, with proper recording of related test data.
This standard provides unified guidelines for the design, manufacture, and application of elevated aerodrome lighting fittings, ensuring their safety and reliability in airport environments.

LISUN supplies the fully test solutions for the following BIS IS 7785 (Part 1) , please see the below excel table:

IS 7785 Clause and Subject	LISUN Product
5.1 Optical System(Figure 1& Figure 2)	LSG-1950
5.1.4.1 Chromatricity	LMS-6000
5.1.4.5 Transmission	HM-700 And LMS-6600T
5.1.5.2 Brightness of diffusing wave	LMS-6000L
5.8.2 Photometric Test	LPCE-2(LMS-9000C)
5.8.4 Test for temperature shock	HLST-500D
5.8.5 Test for Temperature life	GW-225
5.8.6 Rainproof test	JL-UL
5.8.7 Insulation Resistance	WB2681A
5.8.8 High Voltage Test	HIPOT10-100KV

Tags：GW-225 , HIPOT10-100KV , HLST-500D , HM-700 , JL-UL , LMS-6000 , LMS-6600TR , LPCE-2 (LMS-9000) , LSG-1950 , WB2681A