IEC 63026:2019 pdf free download

IEC 63026:2019 pdf free download Submarine power cables with extruded insulation and their accessories for rated voltages from 6 kV (U m = 7,2 kV) up to 60 kV (U m = 72,5 kV) – Test methods and requirements
This document specifies test methods and requirements for power cable systems, cables withextruded insulation and their accessories for fixed submarine installations, for rated voltagesfrom 6 kV (Um = 7,2 kv) up to 6o kV (Um = 72,5 kV).
This document includes the electrical tests and the physical tests on materials andcomponents as well as the specific mechanical tests that are applicable to submarine cablesystems.
The requirements apply to armoured single-core cables and three-core cables in combinationwith their accessories，terminations and joints for usual conditions of installation andoperation，but not to special cables and their accessories,such as submarine cables fordynamic applications (i.e. for direct connection to a floating structure), for which modificationsto the standard tests can be necessary or special test conditions be devised.
This document is applicable to submarine cables installed in permanently submergedconditions with water depths up to 250 m.
NOTE This document does not include accessories having a mechanical function only，such as hang-offs orarmour clamps.
2Normative references
The following documents are referred to in the text in such a way that some or all of theircontent constitutes requirements of this document.For dated references,only the editioncited applies.For undated references, the latest edition of the referenced document (includingany amendments) applies.
IEC 60228,Conductors of insulated cables
IEC 60229:2007，Electric cables – Tests on extruded oversheaths with a special protectivefunction
lEC 60230,Impulse tests on cables and their accessories
IEC 60287-1-1:2006，Electric cables – Calculation of the current rating – Part 1-1: Currentrating equations (100 % load factor) and calculation of losses – General
IEC 60502-2:2014，Power cables with extruded insulation and their accessories for ratedvoltages from 1 kV(Um = 1,2 kV) up to 30 kV(Um = 36 kV) – Part 2: Cables for rated voltagesfrom 6 kV(Um= 7,2 kV) up to 30 kV(Um = 36 kv)
lIEC 60502-4，Power cables with extruded insulation and their accessories for rated voltagesfrom 1 kv(u m = 1,2 kV) up to 30 kV(Um = 36 kV) – Part 4:Test requirements on accessoriesfor cables with rated voltages from 6 kV(Um = 7,2 kV) up to 30 kV(Um = 36 kV)
3 Terms and definitions
For the purposes of this document, the following terms and 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 http://www.iso.org/obp
3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.)
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 to be checked by measurements taking into account specified tolerances.