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While performing a routine unlock and energization on a medium-voltage motor starter, the job scope changed to involve troubleshooting the equipment to attempt to find the cause of apparent linkage binding. As the electrical worker began reassembling the starter and inserting the large double-barrel fuses, he inadvertently pushed the racking assembly in, which caused the shutters to open and the stabs...
While performing a routine unlock and energization on a medium-voltage motor starter, the job scope changed to involve troubleshooting the equipment to attempt to find the cause of apparent linkage binding. As the electrical worker began reassembling the starter and inserting the large doublebarrel fuses, he inadvertently pushed the racking assembly in, which caused the shutters to open and the stabs...
While performing routine construction work on a new indoor substation which was replacing an existing substation, a contact employee cut into shielded medium voltage cable that was energized at 13,800 volts phase-to-phase. This paper describes how management systems failed and allowed this to happen, and describes lessons learned from the incident.
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