接地技术标准解读分析及接地材料选择OA

Grounding engineering belongs to hidden engineering works.The selection of grounding materi-als determines the"health condition"of the grounding device life cycle and fit is also the foundation and prerequisite for the"maintenance-free"operation of the grounding grid.The author interprets and com-paratively analyzes the regulations related to grounding materials in major domestic and international tech-nical standards for grounding engineering,and the differences in technical requirements of grounding ma-terials are pointed out.China's electric power industry standard(DL)specifies special provisions for cer-tain grounding materials with more comprehensive technical requirements than foreign standards.Based on the functional requirements of the grounding grid,the author further elaborates the selection and appli-cation of grounding principal material,grounding auxiliary material and grounding connection,and points out the common mistakes in the use of grounding materials,and puts forward the selection flow-process and technical points of grounding materials.