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DIGITAL HARMONICS TESTER

SOLAR PRODUCT

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)

RangeResolutionAccuracy
400mA0.1mA±1.0% rdg ±8dgt
4A1mA
40A10mA
300A100mA±1.0% rdg ±1% of full scale

AC Voltage (True rms)

RangeResolutionAccuracyInput impedanceMax. input voltage
400mV0.1mV±1.0% rdg ±8dgt>10MΩAC 250V rms
400V100mVAC 450V rms

Resistance

RangeResolutionAccuracyMax. test currentOpen circuit voltage
4000Ω±1.0% rdg ±8dgt70μA1.5V

※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.
HarmonicsAccuracy (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