SIST EN 3475-202:2004

Overview

SIST EN 3475-202:2004 is a European standard developed by the European Association of Aerospace Manufacturers (AECMA) and ratified by CEN. This standard defines the test methods specifically for measuring the mass of electrical cables and conductors used in aircraft applications. It complements the general testing framework established in EN 3475-100, ensuring precise and standardized determination of cable weight metrics essential for aerospace engineering.

The standard mandates reliable measurement techniques for both the conductor and the complete cable, enabling manufacturers and aerospace engineers to comply with regulated mass specifications critical for aircraft safety and performance.

Key Topics

• Scope: Specifies a standard method for mass measurement of electrical conductors and cables designed for aircraft use.
• Normative Reference: To be applied in conjunction with EN 3475-100, which covers general test methods for aerospace cables.
• Apparatus Accuracy: Requires measuring instruments capable of at least 1% accuracy to ensure credible mass and length data.
• Measurement Procedure:
  • Conductor Mass: Measured on specimens at least 0.5 meters in length.
  • Cable Mass: Measured on lengths specified in respective technical specifications.
• Mass Requirements: The measured mass, expressed in kilograms per kilometer (kg/km), must conform to values outlined in the relevant product standards for aerospace cables.

Applications

SIST EN 3475-202:2004 provides critical guidelines that support:

• Aerospace Manufacturing: Ensuring cable mass matches design parameters for weight optimization and regulatory compliance.
• Quality Control: Consistent testing of conductors and cables used in aircraft electrical systems to maintain safety and performance standards.
• Design Verification: Validating materials and manufacturing processes by comparing measured mass against prescribed standards.
• Compliance Reporting: Assisting aerospace suppliers and manufacturers in demonstrating adherence to international standards required for aircraft certification.

By standardizing mass measurement, this document helps reduce variability in cable manufacturing and ensures that aircraft wiring harnesses meet stringent mass and weight restrictions - a key factor in fuel efficiency and overall aircraft operation.

Related Standards

• EN 3475-100: Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General
  Provides foundational testing procedures applicable to all aerospace electrical cable tests.

• Other Aerospace Cable Standards: Various parts of EN 3475 series addressing electrical, mechanical, and environmental testing for aircraft cables.

• International Aerospace Standards: Collaboratively used alongside global standards such as SAE, MIL-STD, and IEC aerospace wiring norms to harmonize testing and manufacturing requirements.

Keywords: EN 3475-202, aerospace cables, aircraft electrical cables, cable mass measurement, conductor mass, cable test methods, aerospace standard, CEN, AECMA, electrical cable testing, aircraft cable mass, aerospace wiring standards