本文件是连接到低压电力系统的所有电气和电子设备的电压暂降穿越性能和符合性测试的非行业特定推荐规程 （标称/额定电压低于1000 V）可能会因持续时间少于一分钟的电源电压降低而发生故障或停机。建议的做法包括定义 基于实际电压凹陷数据的最小电压凹陷抗扰度要求。一条专门用于详细分析最终用户经历的电压骤降的条款提供了对实际情况的深入了解- 世界电压骤降。 本文件明确规定了测试设备的测试程序和要求，以反映电气环境，包括单相、两相和三相、平衡和不平衡电压 下垂。推荐规程还定义了认证和测试报告的要求，包括 穿越设备电压骤降的表征。

This document is a non-industry-specific recommended practice for voltage-sag ride-through performance and compliance testing for all electrical and electronic equipment connected to low-voltage power systems (with nominal/rated voltage less than 1000 V) that can experience malfunction or shutdown as a result of reductions in supply voltage lasting less than one minute. The recommended practice includes defining minimum voltage-sag immunity requirements based on actual voltage-sag data. A clause dedicated to the detailed analysis of voltage sags experienced by end users provides insight into real-world voltage sags. Testing procedures and requirements for test equipment are clearly defined within this document to reflect the electrical environment, including single-phase, two-phase, and three-phase, balanced and unbalanced voltage sags. The recommended practice also defines requirements for certification and test reporting, including characterization of voltage-sag ride-through equipment.