60227 IEC 74

What is 60227 IEC 74 cable?

60227 IEC 74: oil-resistant PVC sheathed flexible control cable, screened. Rating: 300/500 V; 2 to 60 cores (preferred 2, 3, 4, 5, 6, 7, 12, 18, 27, 36, 48, 60), class 5, 0.5 to 2.5 mm2; PVC/D insulation, PVC/ST5 inner sheath, plain or tinned copper wire braid, oil-resistant PVC/ST9 oversheath; numbered cores; 70 C (IEC 60227-7 cl. 2, Table 1). Standard: IEC 60227-7 (clause 2).

IEC 60227-7 (standard): 74 is the screened, 75 the unscreened cable (2.1); 300/500 V; 2 to 60 class 5 conductors; PVC/D insulation; cores twisted, no centre core (a centre filler from five cores in the first layer), one green-and-yellow core from three cores, the others numbered (IEC 60227-1 4.2); PVC/ST5 inner sheath 0.02 Df + 0.6 mm; a braid of plain or tinned copper wires (wire at most 0.16 to 0.31 mm by diameter under the braid), transfer impedance at most 250 ohm/km at 30 MHz; PVC/ST9 oversheath 0.08 dL + 0.4 mm, at most 2.4 mm; Table 1: 0.5 to 2.5 mm2, mean overall diameter 7.7 to 9.6 mm (2 x 0.5) and up; for machines and handling equipment inside buildings, ambient +5 to +40 C, continual flexing not recommended for the screened cable, 70 C conductor and 60 C sheath (2.5). Makers: EN-JV p.28 (manufacturer): 60227IEC74, RVVYP, 'Oil resistant PVC sheathed screened flexible cable', 2-60 cores 0.5-2.5 mm2. The screen's form is not given (drawn as a braid). Code designation (IEC 60227-1:2007 Annex A, p. 20): the first numeral is the basic class (0 non-sheathed for fixed wiring, 1 sheathed for fixed wiring, 4 non-sheathed light duty flexible, 5 sheathed normal duty flexible, 7 sheathed special duty flexible), the second the type within the class, so the number is read whole. The old spelling drops the 60 ('227 IEC 53' = '60227 IEC 53', IEC renumbering); Helukabel's table prints 227 / 245, EN-JV and Top Cable 60227. Core identification (IEC 60227-7 2.3.3, p. 7 and 2.3.7, p. 8): from three cores one core green-and-yellow, every other core numbered as IEC 60227-1 4.2. Drawn as black numbered cores with the green-and-yellow core last; a two-core cable is drawn with one too (the reader gives every count the same rule; the standard has none below three cores).

Documents and pages the readings were taken from

• IEC 60227-7 ed. 1.2 (1995 + A1:2003 + A2:2011, consolidated redline): clause 2 p. 6 to 9, Table 1 p. 10
• IEC 60227-1 ed. 3.0 (2007): Annex A code designation p. 20; 5.2.1 insulation compounds PVC/C, PVC/D, PVC/E p. 11; 5.5 sheath compounds PVC/ST4, ST5, ST9, ST10 p. 14; 4.1.1, 4.1.2 preferred core colours and 4.2 cores by number p. 9
• EN-JV cable catalogue, model table of PVC insulated cables up to 450/750 V, pdf p.28

IEC 60227 / IEC 60245 type numbers: how to read the cable type names