Overview
IEC 61196-1-212:2021 specifies accelerated test methods to assess UV stability of sheath materials used in coaxial communication cables. It defines three alternative laboratory exposure methods (xenon arc, fluorescent UV, mercury vapour) to determine how sheath materials from finished cables resist outdoor and indoor ultraviolet (UV) radiation. Although written for communication cables, the standard can be applied to energy cables when referenced by the relevant product standard.
Key topics and technical requirements
- Scope and samples
- Tests apply to sheath samples taken from the finished cable (minimum sample length given in the standard).
- Methods are intended for both outdoor and indoor cable applications as called up by product standards.
- Not intended for products protected by ≥ 2.0 % carbon black per IEC 60708 (excessive time to failure).
- Three UV exposure methods
- Method A - Xenon arc source: simulates natural daylight/UV; apparatus typically uses a rotating specimen holder or fixed holder with adequate air circulation. Example parameter: irradiance control targeting ~43 W/m² at 340 nm (see ISO 4892-2).
- Method B - Fluorescent UV lamps: uses UV-A and UV-B lamp types to simulate different UV bands.
- Method C - Mercury vapour lamp: historically used for telecommunication cables; Annex shows example mercury vapour apparatus and a water-immersion cycle option has been added.
- Outdoor vs indoor testing
- For outdoor application, Methods A and B include periodic water exposure (spray/immersion). Method C can be adapted with water cycles; round-robin results suggest applicability to outdoor conditions.
- Measurements and evaluation
- Assess loss in mechanical properties, change in appearance, and change in colour after exposure.
- Test duration, defined loss thresholds, measurement methods and test-reporting requirements are specified to support repeatable evaluation.
Practical applications and users
- Cable manufacturers use the standard for product development, material selection, and quality control to ensure sheath durability in UV-exposed environments.
- Independent test laboratories implement the prescribed apparatus and measurement protocols for compliance testing and comparative assessments.
- Specifiers and procurement teams reference IEC 61196-1-212 in product standards, tenders and acceptance criteria for outdoor/indoor cable installations.
- Standards writers and R&D groups apply the methods to support new formulations, aging studies, and lifetime assessments.
Related standards (select)
- ISO 4892-1 / ISO 4892-2 (laboratory light sources and xenon-arc guidance)
- IEC 60708 (carbon black requirements)
- IEC 60811 series (test methods for non-metallic cable materials)
- EN 16472 (mercury vapour lamp photoageing)
Keywords: IEC 61196-1-212, UV stability, coaxial communication cables, sheath materials, UV resistance, xenon arc, fluorescent UV lamp, mercury vapour, accelerated aging, outdoor cable testing.
Open preview (PDF)Coaxial communication cables - Part 1-212: Environmental test methods - UV stability
