SIST EN 2240-034:2010

Overview

SIST EN 2240-034:2010 is a European standard developed by CEN, specifically targeting aerospace incandescent lamps. This document specifies the required characteristics for Lamp Code 382 used in aerospace applications. It must be applied in conjunction with EN 2756, which outlines test methods for incandescent lamps in aerospace use.

This standard ensures consistency, reliability, and safety for incandescent lamps critical to aircraft systems, electrical equipment, and aerospace lighting. It has been ratified by European national standards bodies and forms an essential part of quality assurance in aerospace manufacturing and maintenance.

Key Topics

• Scope and Application
  Defines technical requirements for lamp code 382, including dimensions, electrical characteristics, lifespan, and filament form, focusing on aviation environments.

• Physical Dimensions and Mass
  Key parameters such as light center length (LCL) of 9.5 ± 1 mm, and a specified nominal mass for large production batches. Dimensions comply with aerospace industry mechanical compatibility.

• Electrical Characteristics

  • Nominal voltage: 14 V
  • Nominal current: 0.08 A
  • Nominal power: 1.12 W
  • Nominal luminous flux: 3.8 lm
  • Color temperature: Approximately 2090 K
    These parameters ensure proper integration with aircraft electrical systems.

• Lamp Life Ratings

  • Static life with DC: 2000 hours
  • Dynamic life with DC: 1500 hours
  • Static life with AC: 2500 hours
    These lifespans provide guidelines for maintenance and replacement schedules.

• Filament and Cap Specifications
  Filament form is referenced to EN 2240-002, with lamp cap SX6s compliant with EN 2241, ensuring standardized manufacturing and compatibility.

• Marking and Designation
  Lamps and packaging are required to be marked with international code numbers according to EN 2240-002 for easy identification and traceability.

Applications

• Aerospace Electrical Systems
  Incandescent lamps standardized under EN 2240-034 are used in cockpit instruments, lighting panels, emergency lighting, and other avionics requiring reliable lighting solutions.

• Aircraft Maintenance and Manufacturing
  This standard guides quality control in production and helps maintenance personnel select compliant replacement lamps, supporting safety and operational efficiency.

• Design and Integration in Aerospace Equipment
  Ensures lamps meet crucial performance benchmarks for use in various aerospace products, balancing power consumption, light output, and durability under aviation conditions.

Related Standards

• EN 2756
  Essential companion standard providing test methods for incandescent aerospace lamps, ensuring products conform to functional and safety requirements.

• EN 2240-001
  Covers technical specifications for aerospace incandescent lamps, detailing performance testing and validation.

• EN 2240-002
  Defines main characteristics such as electrical and photometric properties, critical for standardizing lamps like code 382.

• EN 2241
  Specifies dimensional requirements for lamp caps, ensuring mechanical interchangeability in aerospace components.

Conclusion

SIST EN 2240-034:2010 plays a pivotal role in maintaining high standards for incandescent lamps within the aerospace industry. By defining clear electrical, mechanical, and operational characteristics for lamp code 382, it facilitates uniformity, safety, and performance in aviation lighting systems. This standard is indispensable for manufacturers, maintenance engineers, and aerospace designers committed to meeting stringent aerospace quality demands.