| 布设方位 | 供电线、测量线绝缘电阻 | 电极接地电阻 | |||||||
| A (MΩ) | B (MΩ) | M (MΩ) | N (MΩ) | A (Ω) | B (Ω) | M (Ω) | N (Ω) | ||
| NS | 500 | 500 | 500 | 90 | 12.7 | 28.9 | 26.5 | 18.1 | |
| EW | 1 | 50 | 3 | 500 | 16.4 | 16.3 | 28.3 | 15.4 | |