Arc Flash Equipment Labeling Requirement
Equipment labeling requirement for arc-flash were initially introduced in NEC 2002 and later in NFPA 70E 2009.Since then, it has become a norm not only in North America but in …
Arc-flash Hazard Protection – IEC Standard
IEEE has dedicated standards in Arc-flash hazard mitigation and protection (IEEE 1584 & NFPA 70E) while IEC has integrated its arc-flash protection into the IEC 62271-200, High-voltage switchgear and controlgear …
Arc Flash – Hazard and System Grounding
IEEE 1584 Guide Equation for calculation of incident energy has a factor K2 for system grounding. The value of K2 is Ungrounded and high or low resistance grounded systems = …
Advantages of High Resistance Grounding Over Ungrounded Systems
A system grounding or earthing method provides the safety, reliability, and continuity of service required by the electrical power distribution system. In the past, ungrounded systems were preferred when reliability …