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This paper describes the sequence of events that lead to a near-fatal accident on a 4.16 kV power system that was undergoing maintenance. All parties concerned believed the equipment was properly locked out and tagged out of service. A breakdown in communication between the equipment owner/scheduler, the primary contractor and a subcontractor allowed a service technician to enter an energized switchgear...
This paper reviews factors that should be considered when determining maintenance intervals for overcurrent protective devices and switchgear. Performing maintenance on a regularly scheduled basis is good, but how do you determine those intervals? This paper provides some guidance on that question.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.