国外标准全文电子版UL标准文件下载 UL 1666-2026【PDF原文+中文翻译版】竖井内垂直敷设电缆及光缆火焰蔓延高度测试

国外标准全文电子版UL 1666-2026.pdf标准文件下载 高清原版新版

UL 1666-2026【PDF原文+中文翻译版】

原文标题名称：

UL Standard for Safety Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts

中文翻译标题：

竖井内垂直敷设电缆及光缆火焰蔓延高度测试

standard by Underwriters Laboratories, 07/09/2026.

LANGUAGES: English+Chinese【英文原文+中文翻译】

Historical Editions: UL 1666 (2007), UL 1666 (2007), UL 1666 (2007), UL 1666 (2007), UL 1666 (2007), UL 1666 (2000)

Description

This is a fire test for determining values of flame propagation height for electrical and optical-fiber cables that are for installation vertically in shafts or in vertical runs that penetrate one or more floors. 

The purpose of this test is to determine whether the flame propagation characteristics of these "riser" cables are in accordance with the NFPA 70®, National Electrical Code® (NEC®).   

NFPA 70®, National Electrical Code®, and NEC® are registered trademarks of the National Fire Protection Association, Quincy, MA. 

This test does not investigate the toxicity or corrosivity of the products of combustion or decomposition. 

This test does not cover the construction requirements for any cable or the electrical, optical, and other performance requirements for any cable.

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http://www.unstd.cn/doc-view-8678.html

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