Clamp-on Tester CL340 (Leakage Current Clamp Meter, 400A)
- Leakage current measurement device with current range from 40mA to 400A
- Light weight and compact design
- Manual range switching and auto power-off functions
- 40mm in diameter of measurable conductor
- Mean value display
- Auto power-off
- Manual range switching
- Approved for conformity to safety standards EN61010-1, EN61010-2-032(CAT. III 300 V)
What Causes Leakage Current?
Even when powered off, most circuits leak current. This is because some amount of current always finds its path toward the ground, even through electrical insulation. Leakage current can begin to waste energy and affect equipment performance.
How Leakage Current is Measured?
Clamp meters can be used to detect current leakage.
| Description | Leakage Current Mini Clamp-on |
|---|---|
| Method of detection | Mean Value |
| Display | LCD (Digital display: 3999 counts) |
| Response Time | Approx. 2 seconds |
| Range Switching | Manual-range |
| Data hold | On all range |
| Operating temperature and humidity | 0 - 40°C, 85% RH or less (no condensation) |
| Influence of external magnetic field | 10 mA or less in proximity to a 15 mm-dia conductor carrying 100A |
| Influence of conductor position | 40/400 mA range: Within 5 dgt at every part inside the jaw400A range, 0 to 250A:Within ±0.5% rdg ±5 dgt at every part inside the jaw section |
| Influence of Residual Current | 12 mA or less in proximity to a 10 mm-dia conductor carrying 100A |
| Safety Standard | Conforms EN61010-1, EN61010-2-032 |
| Circuit voltage | 300 Vrms or less |
| Withstanding voltage | 3.7 kV AC for one minute |
| Power Supply | LR03 x 2 R0-3(UM-4) x 2 |
| Battery Life | Approx. 40 hours (continuous) |
| Consumed current | Approx. 13 mA |
| Auto power-off | Approx. 10 minutes |
| Diameter of measurable conductor | 40 mm at maximum |
| Dimensions | Approx. 81 (W) x 185 (H) x 40 (D) mm |
| Weight | Approx. 270 g |
| Accessories | Batteries, carrying case (93030) User's manual (IM CL340) |
| Peak Hold | On all range |
| DC Current Range | - |
|---|---|
| DC Current Resolution | - |
| AC Current Range | 40/400mA,400A |
| AC Current Resolution | 0.01mA |
| AC Current Frequency characteristics | 20~1kHz |
| AC Current Method of detection | Mean Value |
| AC Voltage Measurement | - |
| DC Voltage Measurement | - |
| Continuity Check Measurement | - |
| Frequency Measurement | - |
| Temperature Measurement | - |
| Recorder output Function | - |
| Waveform monitor output Function | - |
| Data hold Function | O |
| Auto hold Function | - |
| Peak Hold Function | O |
| Maximum value memory Function | - |
| Mean value display Function | - |
| Filter Function | O |
| Range Hold Function | O |
| Auto ZERO Adjust Function | - |
| Auto power-off Function | O |
At 23°C±5°C，75%RH or less
Accuracy: ±( % rdg + dgt) = ±(% readout + value of least significant digit)
| Parameter | Reference | Accuracy | |
|---|---|---|---|
| WIDE (20Hz～) | 50/60Hz | ||
| AC current | 40mA/400mA | 2.5+10 (20～1kHz) | 1.0+5 (50/60Hz) |
| 400A(0～350A) | 2.5+10 (40～1kHz) | 1.0+5 (50/60Hz) | |
| 400A(350～400A) | 5.0 (40～1kHz) | 2.0 (50/60Hz) | |
Brochures
- Clamp-on Testers (1.4 MB)
Instruction Manuals
- Leakage Clamp-on Tester (2.1 MB)
- Clamp Adapter (26 KB)
Drawings
- CL340/CL345 Leakage Clamp-on Tester (166 KB)
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