Home / Standards / GB/T 17949.1-2000 GB/T 17949.1-2000 Active Guide for measuring earth resistivity,ground impedance and earth surface potentials of a ground system--Part 1:Normal measurements 接地系统的土壤电阻率、接地阻抗和地面电位测量导则 第1部分:常规测量 Standard Type GBT ICS 29.020 CCS K60 Status 现行 Issue Date 2000-01-03 Implementation 2000-08-01 Responsible Dept 国家标准委 Drafting Unit N/A