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3.1 Indication of origin and cable identification
Cables shall be provided with an indication of the manufacturer, which shall be either an
identification thread or a repetitive marking of the manufacturer's name or trade-mark.
Cables for use at a conductor temperature exceeding 70 °C shall also be marked either with
the code designation or with the maximum conductor temperature.
Marking may be by printing or by reproduction in relief on or in the insulation or sheath.
3.1.1 Continuity of marks
Each specified mark shall be regarded as continuous if the distance between the end of the
mark and the beginning of the next identical mark does not exceed
– 550 mm if the marking is on the outer sheath of the cable;
– 275 mm if the marking is
a) on the insulation of an unsheathed cable;
b) on the insulation of a sheathed cable;
c) on a tape within a sheathed cable.
3.2 Durability
Printed markings shall be durable. Compliance with this requirement shall be checked by the
test given in 1.8 of IEC 60227-2.
3.3 Legibility
All markings shall be legible.
The colours of the identification threads shall be easy to recognize or easily made
recognizable, if necessary, by cleaning with petrol or other suitable solvent. |
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发表于 2012-1-31 21:41:00
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