The Boeing Company
Arc flash hazard assessment for a 400-Hz system

Abstract:

In general, certain embodiments of the present disclosure provide methods and systems for determination and assessment of arc flash hazards at an equipment in an electrical power system operative at 400-Hz. According to various embodiments, a method is provided comprising determining an arc current at the equipment and generating an arc flash model based on the determined arc current. The method further comprises determining a value of arc flash incident energy by use of the arc flash model. In some embodiments, an arc flash protection boundary distance and/or a level of Prosomal Protection Equipment (PPE) are further determined by use of the value of arc flash incident energy for the equipment in the 400-Hz electrical power system.