Overview
ISO 2100:1987 - "Aircraft - Electrical connectors - Tests" defines the detailed test procedures and performance requirements for electrical connectors used in aircraft and space vehicles. Prepared by ISO/TC 20, the standard complements connector design requirements (see ISO 1949) and gives standardized methods to verify electrical, mechanical and environmental performance across a wide range of conditions typical of aerospace service.
Key topics and technical requirements
ISO 2100:1987 covers a comprehensive test program including, but not limited to:
- Electrical performance: contact resistance and insulation resistance measurements, shell continuity and voltage‑proof tests (e.g., specified test voltages and monitoring of leakage current).
- Sealing and hermeticity: sealing tests for non‑hermetic (class S) and hermetic (class H) connectors under differential pressure, including bi‑directional leak checks and specified maximum leakage limits.
- Mechanical retention and force: contact holding force, contact retention under axial loads, contact insertion/removal forces, and cable‑securing device behavior.
- Environmental stress: low‑temperature handling, immersion at low air pressure (altitude simulation), thermal shock, endurance (mechanical mating cycles), and robustness conditioning.
- Climatic and corrosive exposure: vibration and acceleration (including test profiles referenced from ISO 7137), humidity and climatic sequences, salt spray and dust resistance, resistance to specified fluids (e.g., conductive saline immersion procedures), and flammability/flamming‑zone considerations.
- Special effects: magnetic effect testing for ferrous‑containing materials and requirements for no adverse compass interference.
- Test methods: specifies measurement methods (for example, contact resistance measured with rated DC current with source open‑circuit voltage limits) and references for environmental and climatic test curves.
Applications and who uses it
ISO 2100 is intended for:
- Aerospace connector manufacturers validating product design and production quality.
- Aircraft systems engineers and qualification teams specifying connector requirements for airframes, avionics, engines and space vehicles.
- Test laboratories performing connector qualification, acceptance and failure analysis.
- Procurement and certification authorities requiring harmonized test evidence for in‑service safety and reliability.
Practical applications include qualification of circular and rectangular aviation connectors, verification of hermetic feedthroughs, and ensuring long‑term performance under vibration, thermal cycling and fluid exposure typical of aircraft operations.
Related standards
- ISO 1949 - Aircraft - Electrical connectors - Design requirements
- ISO 7137 - Environmental tests for airborne equipment (vibration/climatic profiles)
- ISO/TR 2685 - Environmental conditions and test procedures (fire resistance)
- IEC/EN and RTCA/EUROCAE documents (e.g., DO‑160 / ED‑14 series) referenced for environmental profiles
Keywords: ISO 2100:1987, aircraft electrical connectors tests, aerospace connector testing, contact resistance, insulation resistance, sealing test, voltage proof, vibration test, hermetic connectors.
