AS NZS 2373 pdf download – Electric cables—Cross-linked polyethylene insulated—Aerial bundled—For working voltages up to and including 0.6/1 (1.2) kV Part 2: Copper conductors
The conductors shall be stranded，non-compacted circular plain hard drawn copper,complying with the requirements of Table
2.1 and AS/NZS 1125.
The outermost layer of wires in all conductors shall be in right-hand direction of lay.
2.2 CONDUCTOR OPERATING TEMPERATURE
The cable is designed for a maximum continuous operating temperature of 80°C,which isbased on consideration of the performance of the fittings and strength of the conductors.2.3INSULATION
The insulation shall be X-90UV in accordance with AS/NZS 3808.
lt shall be homogeneous, applied with a close fit, but shall be readily removable from theconductor and shall meet the requirements of Table 2.1 and Section 3.
The use of a separator tape under the insulation (on conductor) is optional. Where used, itshall be non-hygroscopic, as defined in AS 3599.1, and shall be either coloured or opaque ifit does not adhere to the insulation.
2.4 IDENTIFICATION OF CORES
The cores shall be identified by continuous,longitudinal raised ribs as detailed inClause
2.4.2 and Figure 1.
In addition, active cores shall be identified by the numerals and letters ‘1 ONE’,2 TWO,‘3 THREE’printed along the core, the numeral matching the number of ribs on the core.With normal or corrected vision the marking shall be legible from a distance of 1 m andshall remain legible after exposure to sunlight for a period of 12 months.
2.4.2 Rib details
The ribs on all cores shall be of uniform profile，within the dimensional constraintsspecified in Figure 1.
The neutral core (incorporated in all cables) shall have a series of approximately evenlyspaced ribs around the circumference and the number of ribs shall be as specified inFigure 1.
The active cores shall have ribs as follows:(a)Two-core cable——one rib.
(b)Three-core cable—one core with one rib and the other with two.
(c)Four-core cable—one core with one rib，another with two and the third with threeribs.
2.4.3Active core numbering details
The height of the numbers shall be not less than 2 mm and the space between numbers shallnot exceed 100 mm. The numerals shall be offset to the identification ribs， but mayoccasionally cross them.
2.5 METRE MARKING One active core in each cable length shall be sequentially marked, numerically, at 1 m intervals. The metre marking shall be limited to six digits and any drum length may start at any integral number. NOTE: The metre marking, although adequate for establishing the approximate length of cable left on the drum following earlier use (cutting) of part of the drum length, should not be relied on for establishing the precise length left.
2.6 LAY-UP OF CORES The cores shall be laid up with a left-hand direction of lay. The sequence of cores shall be neutral, 1, 2, 3, as applicable. The length of lay of the cores shall be not less than 22 times, nor more than 28 times the calculated maximum diameter of a circumscribing circle over the laid-up cores. NOTE: See Tables B1 and B2 of Appendix B.
2.7 ADDITIONAL CORES Although the inclusion of pilot and auxiliary cores in the construction of cables is not specifically covered by this Standard, pilot and auxiliary cores may be included in the cable as agreed between the supplier and the purchaser but due account should be taken of the mechanical and electrical characteristics.
2.8 MANUFACTURER’S IDENTIFICATION Identification shall consist only of a polyethylene terephthalate tape laid over the conductor in active core 1 throughout the length of the core. The tape shall be legibly marked with the manufacturer’s name or registered trade name or mark, the words ‘ELECTRIC CABLE’, designation of insulation, voltage rating and the year of manufacture, at intervals not greater than 100 mm. An interval shall be the distance between the end of one block of marking and the beginning of the next.
2.9 DRUMS The cable shall be supplied on drums. Drums shall be suitable for use with round spindles and be suitable for outdoor storage.