IEC 60840-2020 Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um= 170 kV) – Test methods and requirements

IEC 60840-2020 Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um= 170 kV) – Test methods and requirements. 3 Terms and definitions For the purposes o this document, the fllowing terms and definitions apply-. ISo and IEC maintain terminological databsos for use in standardization at the fllowing addresses: IEC Electropedia: available at htp://www .electropedia.org/ Iso Online browsing platform: awailable at htpt:/w.s0.org/obp 3.1 Definitions of dimensional values (thicknesses, crossections, etc.J) 3.1.1 nominal value value by which a quantity is designated and which is often used in tables Note 1 to entry: Usually. in this document, nominal values give rise to values t怕be checked by measuremets tabing into account speciled tolerances. 3.1.2 median value when several test results have been obtained and ordered in an increasing (or decreasing) succession. middle value if the number of avallable values 1s odd, and mean of the two middie values if the number is even 3.2 Definitions concerning tests 3.2.1 routine test test made by the manufacturer on each manufactured component (length of cable or accessory) to check that the component meets the specified requirements 3.2.2 samplo test test made by the manufacturer on samples of completed cable or components taken from a completed cable or accessory. at a specifled frequency s0 as to verily that the finished product meets the specilied requirements 3.2.3 type test test made before supplying on a general commercial basis a type of cable system or cable or accessory covered by IEC 60840，in order to demonstrate satisfactory performance characteristics to meet the intended aplication 3.2.4 prequalification test test made before supplying on a general commercial basis a type of cable system covered by IEC 60840, in order to demonstrate satisfactory long-term performance of the complete cable system 3.2.5 extension of prequalification test test made before supplying on a general commercial basis a type of cable system covered by IEC 60840, in order to demonstrate satisfactory long-term performance of the complete cable system, taking into account an already prequalified cable system 3.2.6 electrical test after installation test made to demonstrate the integrity of the cable system as installed Note 1 to entry: Integrated optical elements, if present, will be tested upon customer request. Tests to be defined on agreement between customer and manufacturer. 3.3 Other definitions 3.3.1 cable system cable with installed accessories including components used for thermo-mechanical...