UNI-T UT221 True RMS Digital Clamp Meter 2000A
The UNI-T UT221 True RMS Digital Clamp Meter is an advanced measurement tool designed for high-current applications, supporting both AC and DC current measurement up to 2000A. Its large clamp jaw allows easy measurement of thick conductors without interrupting the circuit, making it ideal for industrial environments, power distribution systems, and heavy electrical equipment. With True RMS technology, the UT221 ensures precise readings even when dealing with non-linear loads and complex waveforms.
Built for professionals, the UT221 combines safety, durability, and multifunction capability. It includes comprehensive protection features and supports additional measurements such as voltage, resistance, capacitance, frequency, and temperature. The device is equipped with advanced functions like relative mode and analog bar graph display, improving usability during diagnostics and troubleshooting. Its rugged construction and reliable performance make it a trusted tool for engineers and technicians working in demanding conditions.
UT220 series are 2000A AC/DC digital clamp meters. This series ensures stable performance, safety, and reliability for measuring up to 2000A AC (and DC for UT221) current. It is designed with over-load protection for all ranges, perfect for all professionals measuring currents up to 2000A (2500A for UT222).
Features:
- Auto range.
- Continuity buzzer.
- MAX/MIN.
- Diode.
- Data hold.
- Low battery indication.
- True RMS measurement for accurate AC/DC readings.
- Measures both AC and DC current.
- Large clamp jaw for high-current conductors.
- Non-contact current measurement.
- Auto-ranging functionality.
- Data hold and MAX/MIN recording.
- Continuity buzzer and diode testing.
- Relative measurement mode.
- Analog bar graph display.
- Overload protection on all ranges.
- Low battery indication.
- Suitable for industrial and high-power applications.
Specifications:
| Specifications | Range | UT220 | UT221 | UT222 |
| AC current (A) | 2000A | ±(2.5%+5) | ±(2.5%+5) | |
| 2500A | ±(1.5%+5) | |||
| DC current (A) | 2000A | ±(2.5%+5) | ||
| 2500A | ±(1.5%+5) | |||
| AC voltage (V) | 750V | ±(1.2%+5) | ±(1.2%+5) | |
| 1000V | ±(1%+3) | |||
| DC voltage (V) | 1000V | ±(0.8%+1) | ±(0.8%+1) | ±(0.5%+2) |
| Resistance (Ω) | 20MΩ | ±(1%+2) | ||
| 60MΩ | ±(1%+2) | |||
| 66MΩ | ±(1%+2) | |||
| Capacitance (F) | 60mF | ±(3%+5) | ||
| Frequency (Hz) | 20MHz | ±(0.1%+3) | ||
| 60MHz | ±(0.1%+3) | |||
| Temperature | -40°C~1000°C | ±(1%+10) | ||
| -40°F~1832°F | ±(1%+18) | |||
| Features | ||||
| Display count | 2000 | 6000 | 6000 | |
| Auto range/Diode | √ | √ | √ | |
| Jaw opening | 63mm | 63mm | 63mm | |
| True RMS (AC voltage/AC current) | √ | √ | ||
| Duty cycle | 10%~90% | √ | √ | |
| Continuity buzzer | √ | √ | √ | |
| AC+DC | √ | |||
| Low pass filter | √ | √ | ||
| Inrush current | AC current | √ | √ | |
| Relative mode | √ | √ | ||
| Data hold/MAX | √ | √ | √ | |
| MIN/I-OUT function | √ | √ | ||
| Data storage | 1000 | |||
| Analog bar graph | 66 | 61 | ||
| Full icon display | √ | √ | √ | |
| Low battery indication | √ | √ | √ | |
| Input impedance | ≥10MΩ | √ | √ | √ |
| General Characterisitics | ||||
| Power | 9V battery (6F22) | |||
| Display | 43mm x 30mm | |||
| Product color | Red and grey | |||
| Product net weight | UT220: 389g; UT221/UT222: 726g | |||
| Product size | 298mm x 107mm x 47mm | |||
| Standard accessories | Test leads, output cable (UT221/UT222), thermocouple (UT222) | |||
| Standard individual packing | Gift box, carrying bag (UT220), tool box (UT221/UT222), English manual | |||
| Standard quantity per carton | UT220: 40pcs; UT221/UT222: 5pcs | |||
| Standard carton measurement | UT220: 645mm x 600mm x 330mm; UT221/UT222: 510mm x 375mm x 320mm | |||
| Standard carton gross weight | UT220: 30.1kg; UT221: 12.1kg; UT222: 11.9kg | |||
Applications:
- Industrial electrical maintenance
- High-current AC/DC system measurement
- Power distribution and substations
- Transformer and generator diagnostics
- Renewable energy systems testing
- Heavy machinery and equipment servicing
- UT220 AC current measurement
- UNI-T UT221 current measurement
- UT221 voltage measurement
- UT220 AC voltage measurement



Package Includes:
- UNI-T UT221 Clamp Meter.
- Test leads.
- Output cable.
- Carrying toolbox.
- User manual.



