| Basic function | The range of | Basic accuracy | |
| Model number |
|
UT521 | UT522 |
| Ground resistance (Ω) | Ω～20Ω | ±(2%+10) |
|
| Ω～200Ω | ±(2%+3) |
|
|
| 0～2000Ω | ±(2%+3) |
|
|
| 0～40Ω |
|
±(2%+20) | |
| 0～400Ω |
|
±(2%+3) | |
| 0～4000Ω |
|
±(2%+3) | |
| Ac ground voltage (V) | 0～200V | ±(1%+4) |
|
| 0～400V |
|
±(1%+6) | |
| Frequency: 50Hz/60Hz | √ | √ | |
| Special function | |||
| Maximum disy |
|
2000 | 4000 |
| 手动The range of |
|
√ | √ |
| Automatic shutdown | About 10 minutes | √ | √ |
| Low voltage disy |
|
√ | √ |
| Data retention |
|
√ | √ |
| Data storage |
|
Twenty groups | Twenty groups |
| LCD backlight |
|
√ | √ |
| Full symbol disy |
|
√ | √ |
| Double insulation protection |
|
√ | √ |
| Contact poor indication | C end or E end test contact poor disy "Ω" | √ | √ |
| The range of显示 | 显示“OL” | √ | √ |
| Simple two-wire test |
|
√ | √ |
| Precision three-wire test |
|
√ | √ |
| General characteristics | |||
| Power supply | The 1.5V battery (5 | ||
| LCD size | 70.6mm × 34mm | ||
| Fuselage color | Red gray | ||
| Fuselage weight | 560g | ||
| Fuselage size | 160mm × 100mm × 70.5mm | ||
| Standard parts | Battery, cloth bag, simple test cable with clip, standard test cable with clip, auxiliary grounding nail | ||
| Standard packing | Color boxes, manuals, warranty cards | ||
| Standard packing数量 | Eight sets of | ||
| Standard packing尺寸 | 615mm × 530mm × 190mm | ||
| Standard packing箱毛重 | 15 Kg | ||
