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- HWT-301 Digital Harmonics Clamp Tester
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AC Leakage Clamp Meter
HWT-301 Digital Harmonics Clamp Tester40mmφCT, ACA harmonics up to 25th, ACV, Ω
AC Leakage Current, 400mA/4A/40A/300A
True rms reading, 40mmφCT
Harmonics Current and Voltage
特征
Harmonics and leakage current measurements.Up to 25th harmonics current and voltage measurements.
True rms reading for ACA and ACV.
Data-hold and Auto power off function.
Conform to IEC safety requirements.
下载
- Catalog：e_ca_hwt-301.pdf
- Instruction Manual ：e_ma_hwt301.pdf
What are harmonics ? Let's try to measure by HWT 301
| SPECIFICATIONS | |
|---|---|
| Operating Temperature | 0℃ to 40℃, 80%RH max. ( Without condensation ) |
| Power supply | 1.5V (AM-4, LR03 or AAA)×3 |
| Power consumption | 13mA |
| Weight | Approx. 440g |
| AC Conversion | True rms responding |
| Safety standard | IEC 61010-1, IEC 61010-2-032, Installation CategoryⅡ600V or CategoryⅢ300V |
| Jaw opening capability | 40mmφ |
| Size | 70(W)×223(H)×34(D)mm |
| Accessories | Hard carrying case Instruction manual Batteries |
| Crest factor | < 3 (0～50% of range) < 2 (50～100% of range) |
| Display | 3.5 digit LCD, max. reading of 3999 |
| Over range indication | "OL" mark on LCD |
| Data hold indication | "DH" mark on LCD |
| Low battery indication | "Battery" mark on LCD |
| Auto power off | Approx.20 minutes later after power on |
| E.M.C. standard | EN 61326 |
| Measuring method | Dual slope integration mode |
| Battery life | Approx.50 hours continuous |
| Sampling | 2 times/sec |
| Affection of magnetic field | 3mA or less (at 100A nearby conductor) |
| Input Frequency | 45Hz～65Hz |
| Withstanding Voltage | AC 3700V 1 minute max. (Between the core of CT and outer case) |
| Storage Temperature | 10℃ to 60℃, 70%RH max. ( Without condensation ) |
| Accuracy | (23℃±5℃, 80%RH or less) Range/Resolution/Accuracy/Max.input AC 400mA/0.1mA/±1.0% rdg ± 8 dgt/AC 300Arms AC 4A/1mA/±1.0% rdg ± 8 dgt/AC 300Arms AC 40A/10mA/±1.0% rdg ± 8 dgt/AC 300Arms AC 300A/100mA/±1.0% rdg±1% of full scale/AC 300Arms AC 400mV/0.1mV/±1.0% rdg ± 8 dgt/AC 250Vrms AC 400V/100mV/±1.0% rdg ± 8 dgt/AC 450Vrms 4000Ω/1Ω/±1.0% rdg ± 8 dgt/AC 400Vrms |
| Harmonics mode | |
|---|---|
| Measuring method | Synchronous filter |
| Measurable harmonics | Fundamental to 25th harmonics |
| Minimum input | More than 5% of full scale in each range |
| Accuracy | Harmonics/Accuracy(In case of more than 4% harmonics is included against fundamental input) 1～9th/(±1%rdg±5 dgt)±(basic accuracy of ACA or ACV)-(Error by neighboring harmonics) 10～19th/(±2%rdg±5 dgt)±(basic accuracy of ACA or ACV)-(Error by neighboring harmonics) 20～25th/(±5%rdg±5 dgt)±(basic accuracy of ACA or ACV)-(Error by neighboring harmonics) |
