Table 1

Cable joint failure modes, contributing factors and solutions outline.

Failure mode Contributing factor(s) Solution(s)
Application of mechanical forces Contraction and expansion of metallic materials Trifurcation of cable
Excess cable for conductor expansion and contraction
Installation of steel frames for mechanical strength
Insufficient thermal dissipation Incorrect thermal resistivity of materials Utilisation of location based thermal resistivity data
Overloaded circuits Circuits operating close to or over the design ratings Understanding of wind farm design principles
Correct application of cable optimisation techniques
Installation and workmanship quality Poor workmanship due to inadequate training and workplace skills Adequate and tailored training and education pathways for wind farm cable jointers
Incorrect technology application Incorrect application of componentry and technology Ensure technology and componentry has been designed, tested and manufactured specifically for wind farm applications

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