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MULTI HWT-1000 Electrical Measurement

MULTI HWT-1000 Electrical Measurement
The HWT-1000 is a harmonics tester that measures harmonic components on a power line and the generated direction of these components. It has one channel each of voltage and current input, and the PT ratio and CT ratio can be set to enable the display of the conversion value as primary measuring value.

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The HWT-1000 is a harmonics tester that measures harmonic components on a power line and the generated direction of these components.

It has one channel each of voltage and current input, and the PT ratio and CT ratio can be set to enable the display of the conversion value as primary measuring value.

The HWT-1000 is capable of measurements from the fundamental frequency up to the 40th harmonic.

Measurements can be made on single-phase, single -phase/3-wire, three-phase/3-wire, and three-phase/4-wire power lines for following measurements.

 

Features:

 

  • Measurements and digital display for voltage/current, active/reactive power, phase angle and power factor.
  • Waveform display for voltage and current.
  • Spectrum display for harmonics on voltage and current.
  • Harmonic power and spectrum display for harmonic direction.
  • List of phase difference and contents ratio of each harmonics.
  • List of phase difference and rms value of each harmonics.

 

Specification:

 

Input
Voltage Input
Number of input channels 1ch.
Input ranges 150/500 V rms
Measuring ranges 150V rms range 10 to 160 V rms
500V rms range 30 to 500 V rms
Ranging Manual
Input impedance 1MΩ
 
Current Input
Number of input channels 1ch.
Input ranges 0.5/5/50/300 A rms
Measuring ranges 0.5A rms range 0.05 to 0.6 A rms
5A rms range 0.5 to 6 A rms
50A rms range 5 to 60 A rms
300A rms range 30 to 300 A rms
Ranging Manual
Input method CT sensor
Fundamental frequency input ranges 45 to 65 Hz
Synchronous method Voltage (input priority)
(Synchronous of current is also available)
 
Measurements
AC conversion True rms responding
Maximum input peak voltage/current 1.7 times of each range value
Accuracy (23℃±5℃ and Less than 80%RH)
Function Range Resolution Accuracy
AC current 0.5A 0.1mA ±1.5% rdg±5 dgts
5A 1mA
50A 10mA
300A 100mA
AC voltage 150V 0.1V ±0.5% rdg±3 dgts
500V
 
Harmonic Analysis
Harmonics range Fundamental to 40th harmonics
Analysis display RMS value of each harmonics on voltage and current
and Vn - In phase difference
Contents ratio of each harmonics on voltage and current
and Vn - In phase difference
Reference for analysis Voltage (or current when only current input is used)
Analysis accuracy specified Fundamental input level should be more than 30% of the input range
 
Input voltage
Fundamental to 10th harmonic ±1.5% rdg±3 dgts
11th to 20th harmonic ±5% rdg±3 dgts
21st to 30th harmonic ±10% rdg±3 dgts
31st to 40th harmonic ±20% rdg±3 dgts
 
Input current
Fundamental to 10th harmonic ±3% rdg±3 dgts
11th to 20th harmonic ±6% rdg±3 dgts
21st to 30th harmonic ±15% rdg±3 dgts
31st to 40th harmonic ±30% rdg±3 dgts
 
Phase difference
(Accuracy is specified when the fundamental input level is more than 30% of the input range)
1st to 10th harmonic ±3 deg.
11th to 20th harmonic ±5 deg.
21st to 30th harmonic ±15 deg.
31st to 40th harmonic ±30 deg.
 
Power Measurements
Measurement display items Active power, reactive power, phase angle, power factor
Analysis results display Each harmonics power and spectrum direction display for each harmonics.
 
Waveform Display
Analog display One cycle waveform display for voltage and current
Digital display Distortion ratio of voltage and current
Peak value of voltage and current
 
A/D conversion resolution 16 bits
Sampling rate 256 samplings/period
Averaging Selectable from 1, 2, 4, 8, 16 periods
Three phase measurement Power and phase compensation is provided for 3 phase/3 wire and 3 phase/4 wire power system.
Auto power off function Power is shut off approx. 15 minutes later.
 
General Specifications
Power supply Ni-Cad battery or AC adaptor (Charger)
Continuous operation Approx. 16 hours after full battery charge.
Operating temperature Temperature 5 to 35℃
Humidity 80%RH max.(Without condensation)
Storage temperature Temperature -10 to +50℃
Humidity 70%RH max. (Without condensation)
Withstanding voltage AC 2KV for 1 minute
( Between all measurement terminals and case)
Insulation resistance More than 10 MΩ (Measured by 500VDC insulation tester)
Size 200 (W)×100 (H)×81 (D) mm (Main unit)
Weight Approx. 1.7 kg (Main unit)
Accessories Carrying case
Instruction manual
Voltage input cable set
Current input CT
Optional accessories Charger
LAD - 1000H High voltage clamp adaptor

Specials

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