IEC 60695-2-10:2013

Overview

IEC 60695-2-10:2013 is an essential international standard published by the International Electrotechnical Commission (IEC) focused on fire hazard testing using glowing/hot-wire based test methods. This second edition defines the specifications for the glow-wire apparatus and outlines a common test procedure designed to simulate the thermal stresses caused by heat sources such as glowing elements or overloaded resistors over short durations. The primary goal is to evaluate fire hazards through a controlled simulation technique, providing a standardized small-scale ignition source test.

This standard serves as a foundational safety publication within the IEC 60695-2 Glow-wire series and supports comprehensive fire risk assessments for electrotechnical products and solid electrical insulating or combustible materials. IEC 60695-2-10 should be used in conjunction with related standards IEC 60695-2-11, IEC 60695-2-12, and IEC 60695-2-13, which cover specific test procedures based on the glow-wire methodology.

Key Topics

• Glow-Wire Apparatus Design: The standard details the construction of the glow-wire device, including the standardized electrically heated wire, power supply specifications, temperature measuring system updates, and test chamber setup. This ensures repeatability and reliability in fire hazard simulations.

• Common Test Procedure: A unified test method is described for applying the glow-wire to test specimens, including support methods, application timing, and temperature controls to accurately simulate potential ignition sources.

• Thermal Stress Simulation: The glow-wire technique models the impacts of brief exposure to heated components such as overloaded resistors or glowing heating elements, which are common ignition sources within electrical equipment.

• Verification and Calibration: IEC 60695-2-10 introduces enhanced guidance on verifying the glow-wire temperature system, including temperature measurement calibration and verification of wire tip temperature, essential for maintaining test consistency.

• Flaming Observation Guidance: New annexes provide clarity on assessing flaming and ignition phenomena during testing, helping users distinguish between different types of fire risks and reaction outcomes.

• Updated Terminology and Scope: This edition introduces updated terms and clarified scope to align with other TC89 (Technical Committee 89) documents and IEC 60695 Glow-wire series standards.

Applications

• Electrical Product Safety Testing: Manufacturers and testing laboratories use this standard for evaluating the fire risk potential of end products, including household appliances, industrial equipment, and consumer electronics.

• Material Fire Performance Assessment: Solid electrical insulating materials and other combustible components undergo glow-wire testing to determine fire resistance and ignition characteristics, essential for compliance with safety regulations.

• Fire Risk Management: Applying IEC 60695-2-10 assists designers in minimizing fire hazards caused by component overheating or faults, contributing to safer product designs and reduced fire incidents in electrical devices.

• Regulatory Compliance: Meeting glow-wire testing requirements referenced in regional and international safety regulations supports market access and certification processes for electrical equipment.

Related Standards

To fully implement the fire hazard testing framework based on glow-wire methods, IEC 60695-2-10 is used alongside several complementary standards:

• IEC 60695-2-11: Glow-wire flammability test for end products (GWEPT) – Specifies test methods for assessing the flammability of complete electrotechnical products using the glow-wire technique.

• IEC 60695-2-12: Glow-wire flammability index test for materials (GWFI) – Defines procedures to evaluate the flame propagation characteristics of materials under glow-wire exposure.

• IEC 60695-2-13: Glow-wire ignition temperature test method (GWIT) – Determines the ignition temperature of materials ignited by the glow-wire apparatus.

• IEC 60695-1-10 & IEC 60695-1-11: International guidance on fire risk reduction in electrical and electronic equipment design, covering ignition prevention and containment principles.

Keywords: glow-wire apparatus, fire hazard testing, thermal stress simulation, glow-wire flammability, ignition temperature test, electrical product safety, IEC 60695-2-10, fire risk assessment, electrical insulating materials, fire hazard simulation.