JIAOLIUDIANQIZHUANGZHIDEJIEDIDIANZUYINGFUHEXIALIEGUIDING：

  DANGPEIDIANBIANYAQIGAOYACEGONGZUOYUXIAODIANZUJIEDIXITONGSHI，BAOHUJIEDIWANGDEJIEDIDIANZUYINGFUHEXIASHIYAOQIU：

  R≤2000/I(12.4.1-1)

  SHIZHONGR—KAOLVDAOJIJIEBIANHUADEZUIDAJIEDIDIANZU(Q);

  I―JISUANYONGDELIUJINGJIEDIWANGDERENDIDUANLUDIANLIU(A)。

  DANGPEIDIANBIANYAQIGAOYACEGONGZUOYUBUJIEDIXITONGSHI，DIANQIZHUANGZHIDEJIEDIDIANZUYINGFUHEXIALIEYAOQIU：

  1)GAOYAYUDIYADIANQIZHUANGZHIGONGYONGDEJIEDIWANGDEJIEDIDIANZUYINGFUHEXIASHIYAOQIU，QIEBUYICHAOGUO4Ω：R≤120/I(12.4.1-2)

  2)JINYONGYUGAOYADIANQIZHUANGZHIDEJIEDIWANGDEJIEDIDIANZUYINGFUHEXIASHIYAOQIU，QIEBUYICHAOGUO100，：R≤250/I(12.4.1-3)

  SHIZHONGR—KAOLVDAOJIJIEBIANHUADEZUIDAJIEDIDIANZU(Ω);

  IYIJISUANYONGDEJIEDIGUZHANGDIANLIU(A)。

  ZAIZHONGXINGDIANJINGXIAOHUXIANQUANJIEDIDEDIANLIWANGZHONG，DANGJIEDIWANGDEJIEDIDIANZUANBENGUIFANGONGSHI<12.4.1YI2)、(12.4.1YI3)JISUANSHI，JIEDIGUZHANGDIANLIUYINGANXIALIEGUIDINGQUZHI：

  1)DUIZHUANGYOUXIAOHUXIANQUANDEBIANDIANSUOHUODIANQIZHUANGZHIDEJIEDIWANG，QIJISUANDIANLIUYINGWEIJIEZAITONGYIJIEDIWANGZHONGTONGYIDIANLIWANGGEXIAOHUXIANQUANEDINGDIANLIUZONGHEDE1.25BEI;2)DUIBUZHUANGXIAOHUXIANQUANDEBIANDIANSUOHUODIANQIZHUANGZHI，JISUANDIANLIUYINGWEIDIANLIWANGZHONGDUANKAIZUIDAYITAIXIAOHUXIANQUANSHIZUIDAKENENGCANYUDIANLIU，BINGBUDEXIAOYU30A。

  在高土壤电阻率地区，当接地网的接地电阻达到上述规定值，技术经济不合理时，电气装置的接地电阻可提高到30Ω，变电所接地网的接地电阻可提高到15Ω，但应符合本规范接地电阻测试仪测试的要求。

  DIYAXITONGZHONG，PEIDIANBIANYAQIZHONGXINGDIANDEJIEDIDIANZUBUYICHAOGUO4Ω。GAOTURANGDIANZULVDIQU，DANGDADAOSHANGSHUJIEDIDIANZUZHIKUNNANSHI，KECAIYONGWANGGESHIJIEDIWANG，DANYINGMANZUBENGUIFANJIEDIDIANZUCESHIYICESHIDEYAOQIU。