| RA 3 極法接地電阻測量(IEC 1557-5) |
| 測量電壓 |
| Fluke 1623 |
Vm = 48 V ac |
| Fluke 1625 |
Vm = 20/48 V ac | |
| 短路電流 |
| Fluke 1623 |
> 50 mA |
| Fluke 1625 |
250 mA ac | |
| 測量頻率 |
| Fluke 1623 |
128 Hz |
| Fluke 1625 |
94、105、111、128Hz | |
| 分辨率 |
| Fluke 1623 |
0.001 Ω~10 Ω |
| Fluke 1625 |
0.001 Ω~100 Ω | |
| 測量量程 |
| Fluke 1623 |
0.001 Ω~19.99 kΩ |
| Fluke 1625 |
0.001 Ω~299.9 kΩ | |
| 基本誤差 |
| Fluke 1623 |
± (2 % 讀數(shù) + 3 個字) |
| Fluke 1625 |
± (2 % 讀數(shù) + 2 個字) | |
| 工作誤差 |
| Fluke 1623 |
± (5 % 讀數(shù) + 3 個字) |
| Fluke 1625 |
± (5 % 讀數(shù) + 5 個字) | |