IEC 60092-354-2020 Electrical installations in ships – Part 354: Single- and three-core power cables with extruded solid insulation for rated voltages 6 kV (U m = 7,2 kV) up to 30 kV (U m = 36 kV)

IEC 60092-354-2020 Electrical installations in ships – Part 354: Single- and three-core power cables with extruded solid insulation for rated voltages 6 kV (U m = 7,2 kV) up to 30 kV (U m = 36 kV). 4.2 Markings 4.2.1 Indication of origin and voltage identification Cables shall comply with 4.1 .3 of IEC 60092-350:201 9 with respect to: b) indication of origin; c) rated voltage and cable construction (number of cores and cross-sectional area of the construction); d) continuity of marking; e) durability/legibility. 4.2.2 Continuity of marking The marking is deemed to be continuous if the distance between the end of any marking and the beginning of the next does not exceed: a) 550 mm if the marking is on the outer surface of the cable; b) 275 mm in all other cases. 4.2.3 Core identification for three-cores Cores of cables shall be provided with a suitable method of identification. Each core shall be easily distinguishable from the other cores in the cable. 5 Constructional requirements 5.1 General cable description 5.1.1 Overview Shipboard and offshore cables for fixed installations shall be single or multicore cables generally constructed as indicated in 5.1 .2 to 5.1 .5. 5.1.2 Armoured single-sheathed cable with outer sheath only The armoured single-sheathed cables having only an outer sheath are constructed as follows: • copper conductor, see 5.2; • conductor semi-conducting screen, see 5.4.2; • insulation, see 5.3; • insulation screening, see 5.4; • cabling (for three-core cables), see 5.6; • inner covering, see 5.7; • braid armour, see 5.9; • outer sheath applied as either one or two layer systems, see 5.1 0. 5.1.3 Armoured double-sheathed cable with inner and outer sheath The armoured double-sheathed cables having both an inner and an outer sheath are constructed as follows: • copper conductor, see 5.2; • conductor semi-conducting screen, see 5.4.2; • insulation, see 5.3; • insulation screening, see 5.4; • cabling (for three-core cables), see 5.6; • inner sheath, see 5.8; • braid armour, see 5.9; • outer sheath applied as either one or two layer systems, see 5.1 0. The use of a thermoplastic inner sheath (ST2 or SHF1 ) is not recommended if the outer sheath consists of an elastomeric cross-linked material. 5.1 .4 Armoured single-sheathed cable with inner sheath only The armoured single-sheathed cables having only an inner sheath are constructed as follows: • copper conductor, see 5.2; • conductor semi-conducting screen, see...