BS EN 50397-1 pdf free download

BS EN 50397-1 pdf free download. Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV AC and not exceeding 36 kV AC.
3 Definitions For the purpose of this document, the following definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/obp 3.1 Definitions relating to tests 3.1.1 type tests T tests required to be made before supplying a type of product covered by this document on a general commercial basis in order to demonstrate satisfactory performance characteristics to meet the intended application Note 1 to entry: These tests are of such nature that, after they have been made, they need not be repeated unless changes are made in the material, design or manufacturing process, which might change the performance characteristics. 3.1.2 sample tests S tests made on samples of completed product or components taken from the completed product adequate to verify that the finished product meets the design specifications 3.1.3 routine tests R tests made on all production lengths to demonstrate their integrity 3.2 rated voltage reference voltage for which the conductor is designed and which serves to define the electrical tests Note 1 to entry: The rated voltage is expressed by the value U, expressed in kilovolts, where U is the r.m.s. value between any two-phase conductors. Information on bare conductors with round wires in frequent use can be found in the national lists, contained in EN 50182:2001, Annex F. However, for the purpose of this document, conductors may be selected from any national table. Conductors deviating in design from the standard values shall be given by the manufacturer, but fulfilling all requirements given in EN 50182. Information about conductors made from profiled wires shall be provided by the manufacturer. Non-compacted conductors shall comply with EN 50182 or EN 62219 (with the exception of the filling, if any). For compacted conductors, based on conductors according to EN 50182, the following paragraph applies: The outer diameter of the compacted conductor shall be 95 % (±1 % for 7 and 19-wire constructions, ± 1,5 % for 37-wire constructions) of the diameter given in EN 50182. The rated tensile strength (RTS) shall be at least 95 % of the value given in EN 50182. The DC resistance shall not exceed the value given in EN 50182 by more than 5 %. 4.2.2 Filling The stranded conductor may be longitudinally watertight by means of adequate measures as e.g. filling with an adequate mass. The filling mass or other materials for obtaining the longitudinal watertightness, shall be compatible with the conductor material and the material of the covering (see Table 2). 4.2.3 Covering The covering shall consist of a cross-linked polyethylene compound, which shall comply with the requirements according to Table 1, column 3 or of a thermoplastic polyethylene compound, complying with the requirements according Table 1, column 4. It shall be possible to remove the covering without damage to the conductor. The minimum thickness of the covering at any place shall not be less than the nominal value by more than (0,1 mm + 10 % of the nominal value). The mean value of the thickness of the covering shall not exceed the nominal value by more than (0,1 mm + 10 % of the nominal value). A semi-conductive conductor screen, if any, shall not be measured as covering thickness. The covering shall be applied onto the conductor by extrusion of one or more material layers. In screened versions (constructions), the extruded conductor screen should be durable firmly bonded to the closest layer of insulation.BS EN 50397-1  pdf download.