Digital Harmonics Clamp Tester
PRODUCTS
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AC Leakage Current, 400mA/4A/40A/300A True rms reading, 40mmφCT Harmonics Current and Voltage
Model HWT-301 (CE)
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FEATURES
- 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.
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DETAIL
SPEC
| SPECIFICATIONS |
| Safety standard |
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IEC 61010-1, IEC 61010-2-032, Installation CategoryⅡ600V or CategoryⅢ300V |
| E.M.C. standard |
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EN 61326 |
| Measuring method |
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Dual slope integration mode |
| AC conversion |
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True rms responding |
| Display |
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3.5 digit LCD, max. reading of 3999 |
| Input frequency |
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45Hz~65Hz |
| Affection of magnetic field |
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3mA or less (at 100A nearby conductor) |
| Jaw opening capability |
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40mmφ |
| Over range indication |
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"OL" mark on LCD |
| Low battery indication |
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"Battery" mark on LCD |
| Data hold indication |
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"DH" mark on LCD |
| Sampling |
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2 times/sec |
| Withstanding voltage |
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AC 3700V 1 minute max. (Between the core of CT and outer case) |
| Operating temperature |
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0℃ to 40℃, 80%RH max. ( Without condensation ) |
| Storage temperature |
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10℃ to 60℃, 70%RH max. ( Without condensation ) |
| Power supply |
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1.5V (AM-4, LR03 or AAA)×3 |
| Power consumption |
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13mA |
| Auto power off |
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Approx.20 minutes later after power on |
| Battery life |
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Approx.50 hours continuous |
| Size |
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70(W)×223(H)×34(D)mm |
| Weight |
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Approx. 440g |
| Accessories |
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| Hard carrying case |
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1 |
| Instruction manual |
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1 |
| Batteries |
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3 |
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| Crest factor |
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< 3 (0~50% of range) < 2 (50~100% of range) |
| Accuracy |
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(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 |
| AC 40A |
10mA |
| AC 300A |
100mA |
±1.0% rdg±1% of full scale |
| AC 400mV |
0.1mV |
±1.0% rdg ± 8 dgt |
AC 250Vrms |
| AC 400V |
100mV |
AC 450Vrms |
| 4000Ω |
1Ω |
±1.0% rdg ± 8 dgt |
AC 400Vrms |
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| Harmonics mode |
| Measuring method |
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Synchronous filter |
| Measurable harmonics |
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Fundamental to 25th harmonics |
| Minimum input |
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More than 5% of full scale in each range |
| 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) |
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