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BS EN 50200:2015 pdf free

BS EN 50200:2015 pdf free.Method of test for resistance to fire of unprotected small cables for use in emergency circuits.
BS EN 50200 is applicable to cables for emergency circuits of rated voltage not exceeding 600 VIl 000 V, including those of rated voltage below 80 V and optical fibre cables.
This European Standard includes details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to electric power and control cables with rated voltage up to and including 600 v/i ooo v. Details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to copper data and telecom cables and optical cables are given in the relevant standards of CLCITC 46X and CLCITC 86A.
The test method is limited to cables with an overall diameter not exceeding 20 mm.
The test method is based on the direct impingement of flame from a propane burner giving a constant temperature attack of a notional 842 °C. It is intended to be used for cables for emergency circuits suitable for alarm, emergency lighting and communication.
NOTE When the test method is used in support of EN 13501—3, it only applies to cab4es of less than 20mm diameter, and, for metallic conductor cables, to those with conductor sizes up to and including 2,5 mm2. For optical cables, only the less than 20 mm diameter limit applies.
This European Standard includes (Annex B) the field of direct application and rules for extended application of test results (EXAP). Details regarding classification using data from this test are given in EN 13501-3 1) Information regarding classification is given in Annex D.
This European Standard also includes informative guidance (Annex E) on a means of applying a water spray to the cable during the test. Such a requirement may be a feature of particular product standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references. the latest edition of the referenced document (including any amendments) applies.
EN 13501-3, Fire classification of construction products and building elements – Part 3: Classification using data from fire resistance tests on products and elements used in building seivice installations: fire resisting ducts and fire dampers
EN 60584-1, Thermocouples – Part 1: EMF specifications and tolerances (lEG 60584-1)
EN 606954, Fire hazard testing – Part 4: Terminology concerning fire tests for electrotechnical products (IEC 60695-4)
EN ISO 13943, Fire safety – Vocabulaiy (ISO 13943)
IEC 60269-3:2010 and IEC 60269—3:2010/Al :2013, Low-voltage fuses — Part 3: Supplementary
requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) –
Examples of standardized systems of fuses A to F
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 13943 and EN 60695-4 and the following apply.
draught-free environment
space in which the results of tests are not significantly affected by the local air speed
4 Test environment
The test shall be carried out in a draught-free environment within a suitable chamber, of minimum volume 20 m3, with facilities for disposing of any noxious gases resulting from the burning. Sufficient ventilation shall be available to sustain the flame for the duration of the test. Air inlets and the exhaust chimney should be located in such a way that the burner flame remains stable during the verification procedure and test. If necessary. the burner shall be shielded from any draughts by the use of draught shields. Windows may be installed in the walls of the chamber in order to observe the behaviour of the cable during the test. Fume exhaust should be achieved by means of natural draught through a chimney located at least 1 m from the burner. A damper may be used for adjustment of ventilation conditions.
The same ventilation and shielding conditions shall be used in the chamber during both the verification and cable test procedures.
The chamber and test apparatus shall be at (25 ± 15) °C at the start of each test.BS EN 50200 pdf download.

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