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Published on Apr 4, 2014
Energy Safe Victoria (ESV) estimated that since 1969 the cost of bushfires in Victoria alone is ranges $35 million and $52 million per annum. Clashing conductors, a known cause of bushfire ignition, instigated the introduction of the spreader rod. The spreader rod prevents clashing by maintaining constant conductor separation during high winds and short circuit events. However the accumulated effects of wind induced conductor motion on the spreader rod attachments have led to points of stress concentration, which increases the risk of conductor failure.
The Gridconn Cushion Clamp minimises any dynamic stresses and fretting behaviour by encapsulating the conductor between its large non-metallic contact surfaces and elastomer insert. The design was validated by simulating the wind induced conductor motion it would experience in service. The conductors were oscillated at 3.6Hz for 10.5 million cycles.