Ulan West electrical protection reviewed after incident

GLENCORE’s Ulan West longwall mine engaged the original equipment manufacturer and an independent consultant to review the electrical protection design and settings at the mine after a failure of a shearer supply 3.3kV flameproof back-to-back coupler and plug combination.

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Ulan West senior electrical engineer Peter Every-Burns said the OEM and consultant were also asked to model the load flow to gain a better understanding of the prospective fault current, the arcing