Handheld Digital Double Clamp Phase Voltammeter
High-precision, intelligent burn-proof universal electrical testing instrument designed for on-site measurement of voltage, current, and phase relationships.
Product Overview
This high-precision, handheld dual-channel input measuring device is specifically designed for field measurement applications. It conveniently measures phase angles between U-U, I-I, and U-I, identifies inductive and capacitive circuits, determines three-phase voltage sequence, verifies transformer connection groups, and tests secondary circuits and bus differential protection systems.
Current input via clamp-on transformers eliminates the need to disconnect circuits under test. When measuring phase angles between U1 and U2, the two input circuits are completely isolated, preventing potential short circuits and instrument damage. The high-contrast LCD screen features 25mm-tall characters with approximately 70° adjustable viewing angle for optimal visibility. The engineering insulating material housing with rubber anti-vibration protective cover ensures safety and reliability.
Reference Working Conditions
- Ambient temperature: (23±5)℃
- Ambient humidity: (45-75)% RH
- Signal waveform: sine wave, β=0.02
- Signal frequency: (50±0.2) Hz
- Current-carrying conductor position: arbitrary
- Phase measurement amplitude range: 100-220V, 0.5A-1.5A
- External reference frequency electromagnetic field interference: should be avoided
Measurement Specifications
AC Voltage Measurement
| Range |
Resolution |
Basic Error Limit |
| 20V |
0.01V |
± (0.3% of reading + 0.2% of range) |
| 200V |
0.1V |
| 500V |
1V |
Input impedance: 2MΩ for all ranges
AC Current Measurement
| Range |
Resolution |
Basic Error Limit |
| 200mA |
0.1mA |
± (0.3% of reading + 0.2% of range) |
| 2A |
1mA |
| 10A |
10mA |
Phase Measurement
| Range |
Resolution |
Basic Error Limit |
| 0-360° |
1° |
±2° |
Voltage input circuit impedance when measuring phase U1-U2: 40KΩ
Technical Specifications
- Display: 3.5 digits
- Sampling rate: 3 times/second
- Power supply: Single 9V multilayer battery, current less than 5mA
- Case dimensions: 192mm × 95mm × 55mm
- Clamp dimensions: 140mm × 42mm × 20mm
- Jaw size: Φ7mm×9mm
- Weight: Body 280g, Measuring clamps 2 × 200g
- Storage temperature: -10℃ to 50℃
Product Images
