IT'S TIME FOR A NEW APPROACH TO A DIFFICULT ISSUE when working near open-air substations, switchyards and transmission and distribution lines. For more than 100 years, we've worked hard to avoid contact with energized electrical equipment. In the recent past, arc flash (the inadvertent, unintentional, instantaneous conversion of electric energy to thermal energy in free air in the vicinity of workers) has become an issue within the electrical power industry. The National Fire Protection Association addressed arc flash in NFPA 70E - Standard for Electrical Safety in the Workplace. IEEE has revised National Electrical Safety Code C2 to include arc flash considerations (effective Jan. 1, 2009) and developed Standard 1584 - IEEE Guide for Performing Arc Flash Hazard Calculations.
展开▼
机译：在露天变电站，开关站和输配电线路附近工作时，是时候采取新的解决难题的方法了。 100多年来，我们一直在努力避免与通电的电气设备接触。在最近的过去，电弧闪光（工人附近的自由空气中无意，无意，瞬时地将电能转换为热能）已成为电力行业的一个问题。美国国家消防协会（National Fire Protection Association）在NFPA 70E（工作场所电气安全标准）中解决了电弧闪光问题。 IEEE已对国家电气安全法规C2进行了修订，以纳入弧闪注意事项（2009年1月1日生效），并制定了标准1584-IEEE执行弧闪危险计算指南。
展开▼
