SIST EN 2349-308:2009

Overview

SIST EN 2349-308:2009 is a European aerospace standard that establishes requirements and test procedures for measuring coil current in relays and contactors used in aerospace applications. Developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and ratified by CEN, this standard ensures consistent and reliable testing of electromagnetic components critical to aerospace electrical systems. It is designed to be used in conjunction with EN 2349-100, which provides general requirements for relays and contactors.

This standard is essential for manufacturers, test laboratories, and aerospace engineers focused on maintaining high performance and safety standards in aerospace electrical equipment.

Key Topics

• Scope of Testing: EN 2349-308 specifies a method to test the coil current of relays and contactors, crucial components for controlling electrical circuits in aerospace systems.
• Test Procedure: The procedure requires applying the rated voltage to the coil terminals, measuring the current within 30 seconds, and recording the value.
• Test Criteria: The coil current measured must not exceed the limits set by the relevant product standard to ensure component reliability and safety.
• Normative References: The standard references EN 2349-100 for general requirements and testing protocols related to relays and contactors.
• Standard Compliance: EN 2349-308 must be adopted nationally by CEN member countries, facilitating harmonization across Europe.

Applications

• Aerospace Electrical Systems: Ensures the proper function of relays and contactors by verifying coil current consumption aligns with design specifications.
• Quality Assurance in Manufacturing: Provides manufacturers with a standardized testing method to confirm product compliance before deployment.
• Maintenance and Inspection: Assists aerospace maintenance teams in diagnosing coil current anomalies that could indicate component degradation or failure.
• Component Design Validation: Used during product development to test prototypes and validate electromagnetic coil performance.

Adhering to EN 2349-308 helps improve component reliability and safety, minimizes failure risks in flight-critical systems, and supports regulatory compliance in the aerospace industry.

Related Standards

• EN 2349-100: Aerospace Series - Requirements and test procedures for relays and contactors - Part 100: General requirements
  Provides foundational testing guidelines which EN 2349-308 builds upon for coil current specifics.

• Other EN 2349 Series Parts
  Cover additional test procedures and requirements for aerospace relays and contactors addressing mechanical, electrical, and environmental performance criteria.

• International Aerospace Electrical Standards
  May include standards from SAE, RTCA, and MIL specifications that complement EN 2349 series by addressing broader aerospace electrical system aspects.

Summary

SIST EN 2349-308:2009 is a critical standard for the aerospace industry, specifying the testing procedure and criteria for coil current in relays and contactors. This standard supports improved reliability, interoperability, and safety of aerospace electrical systems by providing a harmonized approach to coil current measurement. Integrating EN 2349-308 into manufacturing and maintenance processes ensures high-quality aerospace electrical components aligned with industry best practices.