AS NZS 60092.354:2020 pdf free.Electrical installations in ships Part 354: Single- and three-core power cables with extruded solid insulation for rated voltages 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV).
5.9 Braid armour
5.9.1 General
The armour type covered by this standard is braid armour, see 5.9.2.
The materials and the constructional requirements of the armours shall be those given in 4.8 of IEC 60092-350:2014. When choosing the material of the armour, special consideration shall be given to the possibility of corrosion.
The armour of single-core cables for use on a.c. circuits shall consist of non-magnetic material. In special cases, for instance when the cables are used on d.c. circuits, magnetic materials can also be used.
The armour shall be applied in such a way that it shall not adhere to the inner sheath, nor to the outer sheath, nor the inner covering.
The nominal diameters of round armour wires shall be not less than the values given in the following subclauses.
5.9.2 Braid wire armour
The braid wire armours are defined as follows.
a) The coverage density of the braid shall be in accordance with IEC 60092-350.
b) The fictitious diameter under the braid is calculated by the method given in Annex A and
c) of IEC 60092-350:2014.
5.9.3 Braid wire diameter
Irrespective of the metal used, the nominal diameter of the braid wire shall be:
— 0,3 mm, as a minimum, for cables having fictitious diameter under the braid, less than or equal to 30 mm;
— 0,4 mm, as a minimum, for cables having fictitious cable diameter under the braid, larger than 30 mm.
5.10 Outer sheath
5.10.1 Material
The outer sheath shall be selected from one listed in IEC 60092-360. The compound selected shall be compatible with the cable components with which it is in contact and compatible with the operating temperature of the cable.
5.10.2 Application
The application shall be as detailed in 4.9.2 IEC 60092-350:20 14.
5.10.3 Thickness of outer sheath
The thickness of outer sheath is given as a function of the internal diameter of the sheath under consideration, the fictitious diameter being calculated by the method in Annexes A and
C IEC 60092-350:2014.AS NZS 60092.354 pdf download.