Overview
IEC 61300-2-11:2012 is an international standard published by the International Electrotechnical Commission (IEC) that focuses on test and measurement procedures for fibre optic interconnecting devices and passive components. Specifically, Part 2-11 addresses axial compression tests, which ensure that the attachment of fibre optic cables to devices such as closures can withstand compressive axial loads encountered in normal service. This second edition updates the 1995 version by refining the testing procedure, adjusting test severity based on cable diameter, and revising the apparatus setup for improved accuracy.
This standard is crucial for manufacturers, testers, and engineers working with fibre optic products, providing a reliable method to validate mechanical resilience and durability in axial compression scenarios.
Key Topics
- Scope and Purpose: Ensures fibre optic cable attachments to devices resist axial compressive loads without compromising integrity or optical performance.
- Test Procedure:
- Specimen preparation with assembled optical components in non-operational mode.
- Pre-conditioning at standard test conditions per IEC 61300-1.
- Mounting specimen using fixed and adjustable clamping devices designed to avoid slippage or damage.
- Application of compressive axial force smoothly and maintaining load for a minimum duration (typically 2 minutes).
- Post-test visual examination per IEC 61300-3-1 to identify damage, deformation, or changes affecting function.
- Test Apparatus: Includes fixed clamping devices, force generators, and force gauges. The clamping device grips the cable over a length at least three times the cable diameter to prevent damage or slippage.
- Severity Levels: Test severity is modified according to cable diameter with recommended axial load values ranging from under 10 N for small cables to 200 N or more for larger diameters. Special severity recommendations exist for fibre optic closures with loads up to 450 N.
- Specification Details: Requires specification of load magnitude, load duration, cable type/diameter, clamping length, load application rate, specimen condition, and additional pass/fail criteria if necessary.
Applications
IEC 61300-2-11:2012 is applied in scenarios including:
- Quality Assurance Testing: Verifying mechanical robustness of fibre optic connectors, closures, and passive components under stress.
- Product Development: Designing fibre optic devices to withstand axial compression forces encountered during installation, operation, and maintenance.
- Compliance Certification: Meeting international standards requirements for product validation and conformity.
- Field Testing: Assessing deployed fibre optic systems for mechanical integrity after installation or service interruptions.
- Research and Innovation: Improving fibre optic component designs with better mechanical performance under compression stresses.
Adherence to this standard helps prevent cable damage, fibre breakage, and excessive cable movement that could degrade signal quality, ensuring long-term reliability of optical networks.
Related Standards
- IEC 61300 Series: This test is part of IEC 61300, a comprehensive set of standards for basic test and measurement procedures for fibre optic interconnecting devices and passive components.
- IEC 61300-1: Provides general and guidance procedures essential for consistent application of tests like axial compression.
- IEC 61300-3-1: Covers visual examination and measurements required in post-test assessment.
- Additional standards may reference or complement axial compression tests, addressing environmental, mechanical, or optical performance under varying conditions.
Summary
IEC 61300-2-11:2012 provides a standardized, practical framework to assess the capability of fibre optic cables and their interconnecting devices to endure axial compressive forces. Through defined procedures, equipment requirements, and severity levels based on cable diameter, it ensures consistent, reliable testing that supports product quality and network dependability. Manufacturers and testers using this standard can confidently validate the mechanical strength of fibre optic assemblies, safeguarding optical performance against mechanical stresses commonly encountered in real-world applications.
Open preview (PDF)Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-11: Tests - Axial compression
