BS EN 50289-4-17:2015 – TC:2020 Edition
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Tracked Changes. Communication cables. Specifications for test methods – Test methods for UV resistance evaluation of the sheath of electrical and optical fibre cable
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 48 |
This European Standard describes three methods to determine the UV resistance of sheath materials for electric and for optical fibre cables. These tests apply for outdoor and indoor cable applications according to the product standard. The samples of sheath are taken from the finished cables. Although this test method European Standard is written principally for communication cables, it may be used for energy cables if called up by the relevant product standard. Where a sheath is of cross-linked (thermosetting) material, it should be recalled that the preparation of moulded plaques must be made before crosslinking. Methods differ by the nature of the UV source. Due to the excessive time to failure, the methods described are inappropriate to products where UV resistance is conferred by ? 2,0 % carbon black meeting the dispersion requirements defined in EN 50290-2-24.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 30 | Contents Page |
| 31 | European foreword |
| 32 | Introduction |
| 33 | 1 Scope 2 Normative references 3 Terms and definitions |
| 34 | 4 Test methods 4.1 Test methods for outdoor application 4.1.1 Method A: xenon arc source 4.1.1.1 General 4.1.1.2 Apparatus 4.1.1.3 Sample and test specimen preparation 4.1.1.4 Procedure |
| 35 | 4.1.2 Method B: fluorescent UV lamp 4.1.2.1 General 4.1.2.2 Apparatus 4.1.2.3 Sample and test specimen preparation |
| 36 | 4.1.2.4 Procedure 4.1.3 Method C: mercury vapour lamp 4.1.3.1 General 4.1.3.2 Apparatus 4.1.3.3 Sample and test specimen preparation |
| 37 | 4.1.3.4 Procedure 4.2 Test methods for indoor application 4.2.1 Method A: xenon arc source 4.2.1.1 General 4.2.1.2 Apparatus 4.2.1.3 Sample and test specimen preparation 4.2.1.4 Procedure |
| 38 | 4.2.2 Method B: fluorescent UV lamp 4.2.3 Method C: mercury vapour lamp 5 Measurements 5.1 Loss in mechanical properties 5.1.1 General 5.1.2 Defined test duration 5.1.3 Defined loss in property |
| 39 | 5.2 Change in appearance 5.3 Change in colour 6 Evaluation of results 7 Test report |
| 41 | Annex A (informative) Example of UV test apparatus with mercury vapour lamp source |
| 43 | Annex B (informative) Guidelines to the interpretation and use |
| 46 | Bibliography |
