PSI - Issue 64

Jayathilake S. et al. / Procedia Structural Integrity 64 (2024) 137–144 Jayathilake S. et al. / Structural Integrity Procedia 00 (2024) 000–000

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for the same temperature levels according to the guidelines given in Appendix R of AS/NZS7000 (2016). Furthermore, the performance of the ACSR powerline was compared with the AAC powerline in similar wind and temperature events.

Fig. 2. Wind hazard curve for the year 2022 at Point Cook Raaf.

5. Comparison of Experimental CBL values with Standard Variations in CBL at different temperatures were compared for each strand type as shown in Fig. 3. The conductor load is decreased with the increment of temperature for both aluminium and steel conductors although the rate of reduction is somewhat different. The minimum breaking load of Aluminium and steel are 1.77kN and 14.5kN respectively for 3.75 mm strands as per AS3607 (1989). The percentage reduction in CBL was obtained compared to the new strand at room temperature and shown in Fig. 4.

Fig. 3. Changes in the CBL with temperature (a) Steel; (b) Aluminium.

Fig. 4. Percentage reduction in CBL with temperature (a) Steel; (b) Aluminium.