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IEC 60332-3-25:著火條件下電纜的測試 第3-25部分:垂直安裝的成束電線或電纜的垂直火焰蔓延的測試 種類D

放大字體  縮小字體 發布日期:2010-06-07   來源:IEC   瀏覽次數:1886  分享到: 分享到騰訊微博
IEC 60332-3-25:著火條件下電纜的測試 第3-25部分:垂直安裝的成束電線或電纜的垂直火焰蔓延的測試 種類D
IEC 60332-3-25:著火條件下電纜的測試3-25部分:垂直安裝的成束電線或電纜的垂直火焰蔓延的測試種類D
IEC 60332-3-25Tests on electric and optical fibre cables under fire conditions – Part 3-25: Test for vertical flame spread of vertically-mounted bunched wires or cables – Category D

Abstract摘要
The series of International standards covered by Parts 3-10, 3-21, 3-22, 3-23, 3-24 and 3-25 of IEC 60332 specifies methods of test for the assessment of vertical flame spread of vertically mounted bunched wires or cables, electrical or optical, under defined conditions.

NOTE For the purpose of this standard, the term "electric wire or cable" covers all insulated metallic conductor cables used for the conveyance of energy or signals.

The test is intended for type approval testing. The requirements for the selection of cables for testing are given in annex A. The flame spread is measured as the extent of damage of the cable sample. This procedure may be used to demonstrate the cable’s ability to limit flame spread.

This part of IEC 60332 covers category D and relates only to small cables of overall diameter 12 mm or smaller installed on the test ladder to achieve a nominal total volume of non-metallic material of 0,5 l/m of test sample. The flame application time is 20 min. The method of mounting uses the front of the standard ladder in touching formation only. The category is intended for use with small cables where very low volumes of non-metallic material are required to be evaluated.

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