HWT-301
FEATURES
- The best monitor for determining harmonic distortion levels in the field use.
- Measures leakage current, load current, voltage with true rms reading.
- Small size, light weight, low cost.
- Easy to use with clamp-on operation.
Measuring Ranges
All pass mode
AC Current (True rms)
| Range | Resolution | Accuracy |
|---|---|---|
| 400mA | 0.1mA | ±1.0% rdg ±8dgt |
| 4A | 1mA | |
| 40A | 10mA | |
| 300A | 100mA | ±1.0% rdg ±1% of full scale |
AC Voltage (True rms)
| Range | Resolution | Accuracy | Input impedance | Max. input voltage |
|---|---|---|---|---|
| 400mV | 0.1mV | ±1.0% rdg ±8dgt | >10MΩ | AC 250V rms |
| 400V | 100mV | AC 450V rms |
Resistance
| Range | Resolution | Accuracy | Max. test current | Open circuit voltage |
|---|---|---|---|---|
| 4000Ω | 1Ω | ±1.0% rdg ±8dgt | 70μA | 1.5V |
※Input protection : 400V rms
Harmonics Mode
| Measuring method | : | Synchronous filter |
| Measurable harmonics | : | Fundamental frequency to 25th harmonics. |
| Minimum fundamental input | : | More than 5% of full scale in each range. |
| Harmonics | Accuracy (In case of more than 4% harmonics are included against fundamental input) |
|---|---|
| 1〜9th | (±1% rdg ±5dgt)±(Basic accuracy of ACA or ACV)- (Error by neighboring harmonics) |
| 10〜19th | (±2% rdg ±5dgt)±(Basic accuracy of ACA or ACV)- (Error by neighboring harmonics) |
| 20〜25th | (±5% rdg ±5dgt)±(Basic accuracy of ACA or ACV)- (Error by neighboring harmonics) |
SPECIFICATIONS
General Specification
| Measuring method | : | Dual integration mode with true rms reading |
| Measuring function | : | : Load current, leakage current, harmonics current, voltage, harmonics voltage, resistance |
| Safety standard | : | IEC 61010-1, IEC 61010-2-032 CATⅡ 600V, CATⅢ 300V |
| E.M.C. standard | : | EN 61326 |
| Affection of magnetic fields | : | Less than 3mA (100A nearby conductor) |
| Display | : | 3 3/4 digit LCD, max. reading of 4000 |
| Input frequency | : | 45Hz〜65Hz |
| Sampling time | : | 2 times/s |
| Over range indication | : | ”OL” mark on LCD readout |
| Low battery indication | : | ” “ mark on LCD readout |
| Data hold indication | : | ”DH” mark on LCD readout |
| Jaw opening capability | : | 40㎜φ |
| Withstanding voltage | : | AC 3700V/1 minute max. (Between the core of CT and outer case) |
| Operating temperature | : | 0℃±40℃, < 80%RH (Non-condensing) |
| Storage temperature | : | -10℃〜60℃, < 70%RH (Non-condensing) |
| Power supply | : | 1.5V (“AAA” size, R03)×3 |
| Power consumption | : | Approx. 13mA |
| Auto power off | : | The meter is set to power off mode at approx. 20 minutes after the power switch on. |
| Battery life | : | Approx. 50 hours continuous (By manganese battery) |
| Size | : | 70(W)×223(H)×34(D)㎜ |
| Weight | : | Approx. 440g |
| Accessories | : | Batteries …………………………3 Carrying case ………………….1 Instruction manual…………….1 |
