The UNI-T UT521 Digital Earth Tester is a reliable and user-friendly instrument designed for accurate earth resistance measurements in various electrical systems.It supports both 2-wire and 3-wire testing methods, making it versatile for different grounding setups.This flexibility allows for precise measurements in power distribution systems, lightning protection installations, and general electrical equipment grounding.
Key features of the UT521 include a manual range selection, enabling users to set measurement ranges according to specific testing requirements.The device is equipped with a data hold function, allowing users to freeze the displayed measurement for convenient reading and recording.An LCD backlight ensures visibility in low-light conditions, and the auto power-off feature conserves battery life by turning off the device after a period of inactivity.
The UT521 is designed with double insulation protection, enhancing user safety during operation.It also provides clear indications for poor contact and over-range situations, displaying and OL respectively, to alert users of measurement issues.A low battery indication ensures that users are aware when the battery needs replacement, preventing unexpected power loss during critical measurements.
Physically, theUT521is lightweight and compact, making it convenient for fieldwork and on-site testing.Its robust design ensures durability in various working environments.The tester comes with essential accessories, including test leads and earth spikes, providing users with the necessary tools for immediate operation.
In summary, the UNI-T UT521 Digital Earth Tester offers a combination of accuracy, safety, and convenience, making it an ideal choice for professionals involved in electrical installation, maintenance, and safety inspections.
| Parameter | Specification |
|---|---|
| Earth Resistance Ranges: | 020 (2%+10) 0200 (2%+3) 02000 (2%+3) |
| AC Earth Voltage: | 0200V (1%+4) |
| Frequency: | 50Hz / 60Hz |
| Display Count: | 2000 |
| Manual Range Selection: | Yes |
| Data Storage: | 20 sets |
| Data Hold: | Yes |
| LCD Backlight: | Yes |
| Auto Power-Off: | 10 minutes of inactivity |
| Low Battery Indication: | Yes |
| Full Icon Display: | Yes |
| Double Insulation: | Yes |
| Poor-Contact Display: | when C/E port not properly connected |
| Over-Range Display: | OL |
| 2-Wire Testing: | Supported |
| 3-Wire Testing: | Supported |
| Power Supply: | 6 1.5V LR6 (AA) batteries |
| Display Size: | 70.6 34mm |
| Dimensions (H W D): | 160 100 70.5mm |
| Weight: | 560g (with batteries) |
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