Overview
IEC 62329-1:2005 - Heat shrinkable moulded shapes: Part 1 - Definitions and general requirements defines the scope, terminology and general requirements for heat shrinkable moulded shapes used for electrical insulation, environmental sealing, mechanical protection and strain relief at connector and cable terminations and multi‑way transitions. It sets out design/dimension principles, specimen preparation, packaging and labelling, classification by shape, and the framework for qualification and consignment testing. The most commonly available shapes are illustrated in Annex A.
Key topics and requirements
- Scope and purpose: Applies to a range of configurations and materials intended for insulation, sealing, protection and strain relief of cables and connectors.
- Definitions: Key terms (e.g., central value, consignment) aligned with IEC 60050(212).
- Specimen preparation: Material specimens are cut from standard test sheets of (2 ± 0.15) mm thickness; a typical convenient sheet size is 150 mm × 150 mm.
- Design & dimensions: Preferred types and sizes referenced in Part 3; purchaser and supplier may agree non‑standard sizes.
- Material and finish: Shapes must be uniform in appearance, free from internal/external defects that affect performance; standard colour is black (other colours by agreement).
- Packaging & labelling: Units must be packaged to protect during transport/storage; packs must be indelibly marked with manufacturer ID, batch number, use‑by date, quantity and Part 3 designation information.
- Qualification & approval: Third‑party certification can be required; declared material composition and production techniques must not be changed without approval. Certification commonly has a 5‑year validity unless agreed otherwise.
- Consignment testing: Supplier responsibility to ensure consignment consistency; resampling/retesting rules apply where failures occur.
- Series context: Part 1 complements IEC 62329‑2 (Methods of test) and IEC 62329‑3 (Specification requirements for dimensions, materials and compatibility).
Applications and users
This standard is practical for:
- Manufacturers of heat shrinkable moulded shapes and heat shrink products
- Cable and connector designers specifying insulation and strain relief solutions
- Procurement and quality engineers who require conformity and labelling details
- Test laboratories and certification bodies conducting qualification and consignment tests
- Installers and OEMs seeking guidance on material selection, compatibility and packaging
Typical real-world uses include insulation and environmental sealing at cable terminations, multi‑way transitions and mechanical protection of connector interfaces.
Related standards
- IEC 62329-2: Heat shrinkable moulded shapes - Part 2: Methods of test
- IEC 62329-3: Heat shrinkable moulded shapes - Part 3: Specification requirements for shape dimensions, material requirements and compatibility performance
- IEC 60050(212): International Electrotechnical Vocabulary - insulating materials terminology
Keywords: heat shrinkable moulded shapes, heat shrinkable, moulded shapes, insulation, environmental sealing, strain relief, connector terminations, IEC 62329-1.