SIST EN 2591-505:2004

Overview

SIST EN 2591-505:2004 is a European standard within the aerospace series, focusing on the test methods for evaluating the effectiveness of contact protection-specifically the scoop-proof feature-in elements used for electrical and optical connections. Developed by the European Committee for Standardization (CEN) and prepared under the oversight of the European Association of Aerospace Manufacturers (AECMA), this standard provides a rigorous and controlled method to verify that contacts used in aerospace connectors are protected against damage during mating or unmating.

This standard is intended for use alongside EN 2591-100, which covers general test methods for aerospace connection elements. SIST EN 2591-505:2004 ensures the reliability and durability of connectors, thereby enhancing electrical and optical system integrity critical in aerospace applications.

Key Topics

• Scope and Purpose: Establishes a standardized procedure to verify scoop-proof contact protection for electrical and optical connectors used in aerospace systems.
• Test Methodology:
  • Phase A: Assess interference between housing shells and contacts by testing plug and receptacle orientations with male and female contacts at the most unfavorable angles.
  • Phase B: Evaluate voltage withstand capability by applying specified voltages between contact groups to detect breakdowns.
• Specimen Preparation: Details requirements for cable types, specimen wiring, and voltage levels based on technical specifications.
• Performance Criteria:
  • No mechanical interference between contacts and housing during engagement.
  • No electrical breakdown when subjected to voltage proof tests.
• Complementary Standards: Utilizes EN 2591-100 for general test conditions and EN 2591-207 for voltage proof testing of connection elements.

Applications

SIST EN 2591-505:2004 is essential for aerospace manufacturers, suppliers, and quality assurance engineers involved in the design, production, and testing of electrical and optical connectors used in aircraft and spacecraft. Its practical applications include:

• Connector Design Verification: Ensures scoop-proof contact protection during the design phase to prevent damage when connectors are engaged or disengaged improperly.
• Quality Control Testing: Provides manufacturers with a reliable test method to confirm that contact protection meets stringent aerospace requirements before deployment.
• System Safety Assurance: Enhances overall system reliability by minimizing potential contact damage, which could lead to electrical failures or signal loss in critical aerospace systems.
• Compliance and Certification: Supports adherence to aerospace electrical connection standards that are often mandatory for regulatory approval and contract fulfillment.

Related Standards

• EN 2591-100: Aerospace series – Elements of electrical and optical connection – Test methods – Part 100: General requirements and procedures.
• EN 2591-207: Aerospace series – Elements of electrical and optical connection – Test methods – Part 207: Voltage proof test.
• AECMA Standards: SIST EN 2591-505:2004 is part of the broader set of aerospace connection element standards developed by AECMA to unify testing and quality criteria across European aerospace industries.

By aligning with SIST EN 2591-505:2004, organizations can ensure that their electrical and optical connectors exhibit robust protection against mechanical damage, maintain optimum electrical performance, and comply with internationally recognized aerospace quality requirements. This standard is pivotal for maintaining the high safety and performance standards demanded in aerospace electrical and optical connection technologies.