TESTS 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
International Electrotechnical Committee
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Test apparatus
4.1 General
4.2 Ignition source
5 Test procedure
5.1 Test sample
5.2 Determination of the number of test pieces
5.3 Mounting of the test sample
5.4 Flame application time
6 Evaluation of test results
7 Performance requirements
8 Retest procedure
9 Test report
Annex A (normative) Guidance on cable selection for
type approval testing
Annex B (informative) Recommended performance
requirements
Describes category D and relates only to small cables of overall diameter 12 mm or smaller and cross-section of 35 mm[2] 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.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 20 |
| Supersedes |
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| Superseded By |
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