Arc-flash analysis is required by the Philippine Electrical Code (PEC) to enhance safety for workers who may be exposed to electrical hazards. PEC mandates arc-flash analysis requirements under Section 1.3.2.1(F) …
Part 1 of this article, which was the cover story in the previous issue of NETA World, explored the need for high-voltage arc flash (HVAF) assessment to protect utility workers …
Arc flash assessment based on IEEE 1584 has limitations with respect to the voltage. The voltage range applicable to IEEE 1584-2018 remains unchanged at 208V through 15kV. Low voltage range …
Protection coordination is the heart of all power systems. To ensure a quality and reliable operation of the power systems, an electrical fault must be cleared within a short time. …
Typical Protection Relay Timing Errors Protection relay grading intervals are critical in ensuring selective coordination in power systems. The recommended protection relay grading intervals typically depend on the type of …
I was reminded of this article which I have written about many years ago when I attended some product presentations about variable speed drives. What catch my attention most was …