Overview
IEC 60626-1:2009 is an international standard developed by the International Electrotechnical Commission (IEC) that specifies definitions and general requirements for combined flexible materials used in electrical insulation. These materials consist of two or more different insulating layers, such as plastic films, papers, or woven and non-woven fabrics, which may be laminated and impregnated depending on performance needs. This standard is foundational for ensuring quality and reliability in flexible insulation systems across electrical and electronic industries.
Key Topics
- Definitions: Clear terminology is provided for various types of combined flexible insulation materials, including duplex (two layers), triplex (three layers), and quadruplex (four layers) laminates.
- Scope Clarification: Excludes mica paper as a primary component, as it is addressed by IEC 60371. However, mica paper may be used as a secondary material within combinations.
- General Material Requirements:
- Uniformity and consistency within shipments
- Freedom from defects such as bubbles, pinholes, creases, or conductive inclusions
- Adequate unrolling capability without damage for rolled products
- Proper packaging and marking for traceability and protection during transport and storage
- Material Designation: Guidance is provided on using code letters, based on the type and nature of main components, aiding clear identification and communication throughout the supply chain.
- Packaging and Supply: Requirements for delivering materials in rolls or sheets, core diameters, and marking information are outlined to ensure practical usability and correct material handling.
- Normative References: Lists related IEC standards for base materials used in flexible insulation combinations, ensuring compatibility and harmonization across products.
Applications
IEC 60626-1:2009 serves as a critical resource for manufacturers, suppliers, and users involved in the design, production, and application of flexible electrical insulating materials. Typical applications include:
- Electrical motor and transformer insulation: Combined flexible materials are used to insulate windings and structural parts, offering electrical, thermal, and mechanical protection.
- Wiring and cable systems: Laminated films and papers provide enhanced dielectric strength and flexibility for cables, especially where bendability and space efficiency are essential.
- Electronic device insulation: In small form-factor electronics, these materials enable reliable dielectric barriers while allowing for efficient assembly.
- Repair and maintenance: Clearly defined product characteristics enable straightforward selection and verification of appropriate materials for equipment servicing.
By complying with IEC 60626-1, organizations ensure the integrity and safety of electrical insulation in diverse operational environments, supporting longevity and reliability in end products.
Related Standards
Several other standards are referenced within or complement the scope of IEC 60626-1, supporting a cohesive approach to flexible insulation material standards:
- IEC 60371: Mica-based insulation materials
- IEC 60554-3-1: Cellulosic papers for electrical purposes
- IEC 60626-2: Methods of test for combined flexible materials
- IEC 60626-3: Specifications for individual materials
- IEC 60641-3-2: Presspaper and pressboard requirements
- IEC 60674 series: Plastic films for electrical insulation, including PET, PI, and PEN films
- IEC 60819 series: Non-cellulosic papers for electrical purposes
Practical Value
Adopting IEC 60626-1:2009 ensures that combined flexible electrical insulation materials are defined, categorized, and supplied according to internationally recognized criteria. This supports safe and effective material selection, supply chain management, and end-use performance, helping organizations adhere to best practices and regulatory expectations in the electrical and electronics sectors.