EN 2240-092:2011

Overview

EN 2240-092:2011 is a European Standard published by CEN that defines the product specifications for incandescent lamps, specifically the lamp identified by code 7715, intended for aerospace applications. Developed under the Aerospace and Defence Industries Association of Europe (ASD-STAN), this standard ensures that lamp code 7715 meets stringent quality and performance criteria essential for use in aviation and aerospace systems. It complements the general technical requirements established in EN 2756 and must be used alongside this document.

This standard is part of the established Aerospace series for incandescent lamps and provides detailed requirements for dimensions, electrical characteristics, filament form, and marking, ensuring consistency and safety in the aerospace electrical systems industry.

Key Topics

• Scope and Purpose
  EN 2240-092:2011 applies to incandescent lamps with code 7715 used in aerospace environments, specifying their required characteristics to ensure reliability and performance under demanding operational conditions.

• Dimensions and Mass
  The lamp's dimensional details, including bulb appearance and key measurements like Light Centre Length (LCL), are specified in millimeters. For instance, the standard defines an LCL of 7 ± 0.75 mm and a nominal mass of 0.15 kg per 1000 lamps, ensuring compatibility with aerospace lighting systems.

• Electrical Characteristics

  • Nominal voltage: 5 V
  • Nominal current: 0.115 A
  • Nominal power: 0.575 W
  • Nominal luminous flux: 1.9 lumens
  • Color temperature: Approximately 2070 K
    These parameters ensure the lamp performs reliably in aerospace electrical circuits.

• Life and Durability
  The lamp’s lifespan ratings include:

  • Static with DC power supply: 4,000 hours
  • Dynamic with DC power supply: 2,000 hours
  • Static with AC power supply: 4,000 hours
    Such specifications address performance stability over extended periods of operation.

• Filament and Cap Specifications
  The lamp uses a filament form consistent with C – 2R (per EN 2240-002), and features a G 1.27 lamp cap, ensuring secure mechanical and electrical connection based on EN 2241.

• Marking and Designation
  Lamps and packaging must carry the international code number as listed in EN 2240-002 for traceability and standardization. The designation format follows "LAMP, INCANDESCENT EN2240-7715," allowing ease of identification.

Applications

EN 2240-092:2011 targets aerospace industry stakeholders including manufacturers, system integrators, and maintenance professionals who require standardized incandescent lighting solutions for:

• Aircraft cockpit and cabin lighting systems
• Aerospace electrical equipment and instrumentation
• Maintenance and replacement of aerospace lamps to ensure regulatory compliance and interchangeability
• Design and certification of aerospace lighting components adhering to international standards

This standardized lamp guarantees operational safety, uniform performance, and facilitates international interchangeability of aerospace lighting parts, reducing downtime and maintenance complexity.

Related Standards

• EN 2756 – Aerospace series: Lamps, incandescent – Test methods. Used alongside EN 2240-092 for validating lamp compliance through rigorous testing protocols.
• EN 2240-001 – Technical specification for incandescent lamps in aerospace, providing overarching electrical and mechanical criteria.
• EN 2240-002 – Main characteristics of incandescent lamps, detailing filament forms and operational parameters related to code 7715 lamps.
• EN 2241 – Defines dimensions and requirements for lamp caps, including the G 1.27 cap type specified in this standard.

By integrating EN 2240-092:2011 with its related standards, aerospace manufacturers and operators can ensure the lamps installed conform to strict European regulatory requirements, enhancing reliability and performance in critical applications.

Keywords: aerospace incandescent lamp, EN 2240-092, lamp code 7715, aerospace lighting standard, aircraft lamps, incandescent lamp specifications, aerospace electrical components, EN 2756, EN 2240 series, aerospace industry standards.