ASTM D5424-23a
Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration

Standard No.

ASTM D5424-23a

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D5424-23a

Scope

1.1  This is a fire-test-response standard. 1.2  This test method provides a means to measure the smoke obscuration resulting from burning electrical insulating materials contained in electrical or optical fiber cables when the cable specimens, excluding accessories, are subjected to a specified flaming ignition source and burn freely under well ventilated conditions. 1.3  This test method provides two different protocols for exposing the materials, when made into cable specimens, to an ignition source (approximately 20 kW), for a 20 min test duration. Use it to determine the flame propagation and smoke release characteristics of the materials contained in single and multiconductor electrical or optical fiber cables designed for use in cable trays. 1.4  This test method does not provide information on the fire performance of electrical or optical fiber cables in fire conditions other than the ones specifically used in this test method, nor does it measure the contribution of the cables to a developing fire condition. 1.5  Data describing the burning behavior from ignition to the end of the test are obtained. 1.6  The production of light obscuring smoke is measured. 1.7  The burning behavior is documented visually, by photographic or video recordings, or both. 1.8  The test equipment is suitable for making other, optional, measurements, including the rate of heat release of the burning specimen, by an oxygen consumption technique and weight loss. 1.9  Another set of optional measurements are the concentrations of certain toxic gas species in the combustion gases. 1.10  The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. (See IEEE/ASTM SI 10 .) 1.11  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.12  Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.13  This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions. 1.14  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D5424-23a Referenced Document

• ASTM D1711 Standard Terminology Relating to Electrical Insulation
• ASTM D5537 Standard Test Method for Heat Release, Flame Spread and Mass Loss Testing of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• ASTM E1354 Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter
• ASTM E176 Standard Terminology of Fire Standards
• ASTM E800 Standard Guide for Measurement of Gases Present or Generated During Fires
• ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials
• IEEE 1202 IEEE Standard for Flame-Propagation Testing of Wire and Cable*， 2023-12-19 Update
• IEEE/ASTM SI 10 American National Standard for Metric Practice
• ISO 13943 Fire safety — Vocabulary*， 2023-09-01 Update

ASTM D5424-23a history

• 2023 ASTM D5424-23a Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 2023 ASTM D5424-23 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 2018 ASTM D5424-18 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 2014 ASTM D5424-14 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 2010 ASTM D5424-10 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 2005 ASTM D5424-05 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
• 1999 ASTM D5424-99 Standard Test Method for Smoke Obscuration of Insulating Materials Contained in Electrical or Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration