SIST EN 2591:2001

Overview

EN 2591:1992 (adopted as SIST EN 2591:2001) is a CEN aerospace-series standard that defines the general requirements for test methods applied to elements of electrical, optical and data transmission system connections used in aerospace applications. It provides a framework for establishing consistent, repeatable testing practices for connector and harness elements used on aircraft and spacecraft, covering electrical, optical and data interfaces at a high, non-prescriptive level.

Key Topics

The standard focuses on general principles rather than prescriptive values, and typically addresses:

• Scope and applicability for connector and transmission elements in aerospace environments.
• General test method requirements, including the need for clear test procedures, conditioning, and acceptance criteria.
• Types of performance areas that test methods should cover, such as electrical continuity, contact resistance, insulation, optical transmission (e.g., loss and continuity), and data signal integrity.
• Mechanical and environmental considerations for test planning, including mechanical endurance, mating/unmating cycles, vibration, shock, temperature and humidity conditioning.
• Documentation and reporting expectations to ensure traceability and reproducibility of test results.
• Sampling, preparation and conditioning practices prior to testing, and the role of qualification versus routine inspection.

Note: EN 2591 sets out general requirements for how tests should be defined and carried out; specific numerical criteria or test procedures are normally found in companion or more detailed standards.

Applications

EN 2591 is used where consistent test method definition and application are required across the aerospace supply chain. Typical users and use cases include:

• Aerospace manufacturers and OEMs specifying test method requirements in procurement and qualification of connectors and cables.
• Component and connector suppliers developing test plans for product qualification and design verification.
• Test laboratories and quality teams implementing standardized, traceable testing procedures for electrical, optical and data connection elements.
• Systems engineers and integration teams validating connector performance under operational and environmental stressors.
• Procurement and certification bodies ensuring suppliers meet harmonized testing expectations.

Related Standards

EN 2591 is a general-methods standard within the aerospace connector domain. It is commonly used alongside more detailed connector qualification and performance standards from national and international bodies that provide specific test procedures and numerical limits for electrical, optical and data transmission performance.

Keywords: EN 2591, aerospace connectors, electrical and optical connection, test methods, data transmission, CEN, connector qualification, aerospace testing, SIST EN 2591.