SIST EN 3218-002:2009

Overview

SIST EN 3218-002:2009 is a European standard developed by the Slovenski inštitut za standardizacijo (SIST) specifically for the aerospace sector. The standard defines the performance specifications and contact arrangements for rectangular connectors with metallic shells and screw-locking mechanisms, as outlined in EN 3218-001. These connectors are crucial components for electrical and electronic systems in aerospace applications, where reliability, durability, and strict operational parameters are mandatory.

By establishing uniform requirements, this standard supports the development, selection, and integration of rectangular screw-locking connectors used in aircraft, spacecraft, and other demanding environments. It addresses aspects such as connector coding, termination types, permissible cables, contact arrangements, as well as electrical, climatic, and mechanical operating characteristics.

Key Topics

• Performance Specifications: Outlines electrical, mechanical, and climatic performance criteria for rectangular aerospace connectors with metallic shells and screw-locking.
• Contact Arrangements: Standardizes the arrangement and coding of male and female contacts to ensure compatibility, flexibility, and interchangeability between components.
• Termination Types:
  • Solder contacts (integral with inserts)
  • Crimp contacts (removable, various sizes and positions)
• Coding and Polarization: Provides a user-defined system for connector coding and polarization to prevent mismating during installation and maintenance.
• Permissible Cables: Specifies compatible cable sizes and dimensional criteria, crucial for maintaining electrical integrity and reliability.
• Marking and Identification: Ensures connectors and components are clearly marked according to standardized practices.
• Assembly and Wiring Guidance: References detailed assembly and wiring instructions for correct and efficient integration into aerospace systems.

Applications

SIST EN 3218-002:2009 finds substantial use within the aerospace industry due to its focus on high-reliability electrical connectors. Key applications include:

• Aircraft Electrical Systems: Used for interconnection of avionic modules, control panels, navigation, and communication equipment where vibration resistance and secure mating are essential.
• Spacecraft and Defense Systems: Suitable for environments with extreme temperature and performance demands, supporting safe operations at high altitudes.
• Maintenance and Upgrades: Standardized arrangements facilitate quick replacement, retrofitting, and interoperability within multinational aerospace programs or platforms.
• Quality Assurance: The standardized criteria help in streamlining procurement, inspection, and quality assurance procedures across the aerospace supply chain.

Related Standards

Several related standards complement SIST EN 3218-002:2009, collectively covering connector performance, materials, and installation:

• EN 3218-001: Technical specification for rectangular connectors with metallic shells and screw-locking.
• EN 3155-022 & EN 3155-023: Product standards for male and female crimp contacts, respectively.
• EN 2265-002 & EN 2266-002: Specifications for aerospace electrical cables suitable for these connectors.
• EN 2591-209: Methods for testing current temperature derating in electrical connections.
• EN 3197: Guidelines for installation of electrical and optical interconnection systems in aircraft.
• EN 3218-005, EN 3218-006, EN 3218-007, EN 3218-008: Product standards for specific connector configurations and accessories.
• EN 4008-003: Standard for general accessories such as filler plugs.

Implementing SIST EN 3218-002:2009 in aerospace projects ensures enhanced reliability, compatibility, and safety of electrical connector systems, aligning with rigorous industry best practices.