保护接地与保护接零的选择使用

摘要

Protective grounding and protective earthing are important measures to prevent electric shock accidents and to keep electric equipment working properly. This article examines the working principles of the two measures as well as the differences and application ranges and installment requirements.%保护接地与保护接零是防止人身触电事故、保证电气设备正常运行的重要技术措施。简述保护接地与保护接零的工作原理，详细介绍这两种保护方式的不同点、使用范围和设置要求，并介绍选择保护接地和保护接零方式的原则。