IEC 60819-2:2001

Overview

IEC 60819-2:2001 – Non-cellulosic Papers for Electrical Purposes – Part 2: Methods of Test is an international standard developed by the International Electrotechnical Commission (IEC). This document specifies the fundamental test methods to be used when evaluating non-cellulosic papers intended for electrical applications. The test procedures within IEC 60819-2:2001 are designed to ensure that such materials meet the requirements given in the specification sheets outlined in IEC 60819-3.

Non-cellulosic electrical papers play a critical role in insulating systems for electrical equipment. Standardized testing methods are essential for consistent assessment of product quality, safety, and performance across international markets.

Key Topics

IEC 60819-2:2001 covers a comprehensive range of test methods that address the key properties of non-cellulosic electrical papers. The standard includes, but is not limited to:

• Thickness measurement: Procedures for determining sheet thickness to ensure conformity with design parameters.
• Grammage (mass per unit area): Methods for calculating the mass per surface area to verify material consistency and performance.
• Dissipation factor and permittivity: Guidelines for measuring electrical insulation properties, critical for dielectric applications.
• Tensile strength and elongation: Testing to determine the mechanical robustness of the material in both machine and cross directions.
• Edge-tearing resistance: Procedures for evaluating resistance to tear propagation along the paper edges, which is important for handling and durability.
• Shrinkage after heating in air: Assessments to ensure thermal stability during operation.
• Electric strength: Methods for testing the dielectric breakdown strength of the material.
• Conductivity of aqueous extract: Procedures to measure ionic purity, relevant for long-term insulation reliability.
• Moisture content and loss on ignition: Tests for assessing water content and residual mass after combustion, indicators of material composition and performance stability.

Applications

The test methods specified in IEC 60819-2:2001 are applicable to manufacturers, quality assurance laboratories, and testing centers involved in the production and certification of non-cellulosic insulating papers. Key applications include:

• Quality assurance in manufacturing: Ensuring batch-to-batch consistency through standardized thickness, grammage, and tensile tests.
• Product development and R&D: Supporting research teams in evaluating new papers and optimizing formulations for electrical insulation.
• Conformance and compliance: Providing test protocols for suppliers and users to validate that materials meet international requirements as referenced in IEC 60819-3 specification sheets.
• Performance and reliability testing: Assessing materials for use in electrical transformers, capacitors, cables, and other critical electrical equipment.
• Safety evaluations: Ensuring that insulating papers can withstand operating voltages and thermal environments as encountered in service conditions.

Related Standards

IEC 60819-2:2001 is part of a broader series for non-cellulosic papers for electrical purposes. Key related standards that complement or are referenced by IEC 60819-2:2001 include:

• IEC 60819-1: Definitions and general requirements for non-cellulosic papers.
• IEC 60819-3: Specification sheets for specific types of non-cellulosic electrical papers.
• IEC 60243-1: Electrical strength of insulating materials – Test methods at power frequencies.
• IEC 60250: Methods for determining permittivity and dielectric dissipation factor of electrical insulating materials.
• ISO 186: Sampling methods for paper and board to determine average quality.
• ISO 534: Determination of thickness and apparent density of paper and board.
• ISO 536: Determination of grammage (mass per unit area) for paper and board.
• ISO 1924: Determination of tensile properties for paper and board.

Manufacturers and testing bodies are encouraged to consult the latest editions of these referenced standards to ensure full compliance and up-to-date practices in non-cellulosic paper testing for electrical purposes.

By applying IEC 60819-2:2001, organizations can standardize their testing approaches, demonstrate compliance to international requirements, and consistently deliver high-quality insulative materials for the electrical industry.