BS EN 50577:2015
$142.49
Electric cables. Fire resistance test for unprotected electric cables (P classification)
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 32 |
This European Standard specifies a test method to evaluate the maintenance of circuit integrity of electric cables which have intrinsic resistance to fire under fire conditions, in order to classify the electric cable according to EN 13501‑3 .
The test determines the survival time for circuit integrity of the electric cable when exposed to fire under the conditions of the EN 1363‑1 standard time/temperature curve.
This European Standard is used in conjunction with EN 1363‑1 .
This European Standard applies to electric power and control cables with rated voltage up to and including 600/1 000 V.
The cable is tested in a standardized representative installation condition.
The test does not assess the performance of the cable management system.
Optical fibre cables and copper communication cables could be tested using this test method, however verification procedures for such cables were still under development when this document has been circulated for vote (2015-07-24).
This European Standard includes field of direct application ( Annex A) and rules for extended application of test results (EXAP) ( Annex B).
The selection of cables to be tested for classification of a family is given in Annex B. In case the selection of the cables does not comply with Annex B, the test results are only applicable to the tested cables.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | European foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions 4 Test equipment 4.1 Test furnace 4.2 Continuity and voltage withstand checking arrangement (See Figure 15) |
| 10 | 4.3 Fuse 4.4 Standardized representative installation 4.4.1 General 4.4.2 System components 4.4.2.1 Cable tray 4.4.2.2 Suspensions and horizontal supports (U-shaped and perforated) 4.4.2.3 90-degree fittings |
| 11 | 4.4.2.4 Right-angled brackets 4.4.3 Loading 4.4.4 General arrangements of installation in furnace |
| 13 | 4.5 Installation of standardized representative installation 4.5.1 Details of “U” bend arrangement |
| 15 | 4.5.2 Details of “S” bend arrangement |
| 16 | 4.5.3 Application of the chains 4.5.4 Exit holes from the furnace for the test installation |
| 18 | 5 Test conditions 5.1 Environmental conditions 5.2 Furnace control 6 Test specimen 6.1 Length of test specimen |
| 19 | 6.2 Number of test specimens 6.3 Conditioning 6.4 Specimen preparation 6.5 Mounting of test specimens |
| 20 | 7 Test procedure 7.1 General 7.2 Measuring temperature |
| 22 | 7.3 Applying the voltage |
| 23 | 7.4 Starting the test 8 Duration of survival 8.1 Point of failure |
| 24 | 8.2 Survival time 9 Test report |
| 25 | Annex A (normative) Field of direct application A.1 Terms and definitions A.2 Cable Management System A.3 Orientation A.4 Bending radius |
| 26 | Annex B (normative) Extended application of test results B.1 General B.2 Terms and definitions B.3 Product families for EXAP |
| 27 | B.4 EXAP procedure |
| 29 | Bibliography |
