NR8807B handheld three-phase power quality analyzer is a dedicated portable product for monitoring and analyzing the quality of power grid operation. It can provide harmonic analysis and power quality analysis in power operation, and can perform long-term data collection and monitoring on power grid operation. At the same time, it is equipped with power quality data analysis software to perform various analyses on the measurement data uploaded to the computer.
Overview
● Use ARM and DSP and 16M bytes of memory;
● It can measure save the data and upload it to the PC for analysis;
● Modular structure reasonable design and reliable operation.;
● English menu operation easy to learn;
● The instrument software can be updated with a USB disk and the software upgrade is simple and convenient;
● Use power quality data analysis software to analyze the measurement data in detail on the PC.
Product Functions
● Voltage/Current/Frequency: It can measure three-phase voltage neutral line voltage three-phase current neutral line current frequency etc.
● Harmonic measurement: it can measure up to the 50 times of harmonic. The measurement results include the amplitude of each harmonic voltage and each harmonic current the total distortion of voltage harmonics (total distortion rate) the containment rate of each voltage harmonics/ each current harmonics.; can display harmonic spectrogram.
● Power/electric energy measurement: it can measure three-phase apparent power active power reactive power power factor three-phase electric energy etc.
● Three-phase unbalance measurement: can measure three-phase voltage unbalance and positive sequence negative sequence zero sequence voltage; three-phase current unbalance and positive sequence negative sequence zero sequence current; can display voltage vector current Vector illustration.
● Monitoring and recording: Basic (steady-state) power quality parameters can be recorded for a long time and the recording interval is adjustable from 3 seconds to 30 minutes.
● Digital oscilloscope: can be used to view the voltage/current signal waveform.
Models
| Item name | Measurement range | Accuracy | Explanation: | |
| Voltage/ current/ frequency |
Three-phase voltage: 10 – 700V (true RMS) Neutral line voltage: 1~70V (true RMS) Three-phase current: 0~1000A (true RMS 1000A current sensor is optional) Neutral line current: 0~25A (true RMS 25A current sensor is optional) Frequency: 40~70Hz |
Voltage: ±0.5% Current: ±0.5% Frequency: ±0.01Hz |
Here the phase A voltage frequency is used as the measurement frequency | |
| Harmonic measurement |
Voltage harmonics: total harmonics 1 ~ 50th harmonics. Current harmonics: total harmonics 1 ~ 50th |
Voltage harmonics: ±0.1(%f) Current harmonics: ±0.05(A) |
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| Power measurement |
Active power: 0.05~700KW Apparent power: 0.05~700KVA Reactive power: 0.05~700KVAR Power factor: 0.00~1.00 Active electric energy: 0.01~10000kWh Apparent electric energy: 0.01~10000kVAh Reactive electric energy: 0.01~10000kVARh Average power factor: 0.00~1.00 |
Active power: ±2% Apparent power: ±2% Reactive power: reading ±2% Power factor: reading ±0.005% Active electric energy: reading ±2% Apparent electric energy: reading ±2% Reactive electric energy: reading ±2% Average power factor: reading ±0.005% |
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| Three phase un-balance |
Fundamental voltage: 10 ~ 700V (true RMS) Fundamental current: 0.5 ~ 1000A (true effective value) Fundamental frequency: 40 ~ 70Hz Phase angle: 0 ~ 360 ° Unbalance: 0.0% ~ 100% |
Voltage: 0.5%; Current: 0.5% Frequency: reading ± 0.01Hz Phase angle: reading ± 0.3 ° Voltage unbalance: reading ± 0.2 Current unbalance: reading ± 0.2 |
Here the phase A voltage frequency is used as the total measurement frequency | |
| Monitoring records |
Recordable parameters: Three-phase voltage three-phase current neutral current voltage harmonics (total harmonics 1~25th harmonic) current harmonics (total harmonic 1~25th harmonic) three-phase unbalance active power power factor fluctuation flicker |
Recordable time = (the maximum number of data that can be recorded by the instrument times save time interval)/60mins=18635*3s/3600s=15.5h Storage interval: 3s-30min~ Records time: 15 hours ~ 388 days |
The collection interval is set to 3s which can monitor 15.5 hours and the collection interval is set to 30 min which can monitor 388 days (3s to 30 min continuously adjustable) | |
| Sudden rise and fall | Sudden voltage rise voltage fall and temporary power failure | Up to 40 events can be recorded | ||
| Fluctuation | Voltage fluctuation amount: 0.1%~10.0% | Measurement error ±5% | ||
| Flicker |
Short-term flicker Long-term flicker |
Short-time flicker measurement error: ±5% Long-term flicker measurement error: ±5% |
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| Digital oscilloscope | Instantaneous waveforms of three-phase voltage three-phase current neutral voltage and neutral current |
Maximum sampling frequency: 200KHz Minimum sampling frequency: 100Hz |
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| Dimension | 278× 152× 85mm | |||
| Weight | 1.6kg | |||
Other technical parameters
| Voltage signal input circuit: |
Direct access input impedance: 1MΩ 20pF’ Measuring range: voltage true RMS value 10 ~ 700V (RMS); Peak voltage: 1000V. Power consumption: less than 0.5VA/phase |
| Current input circuit |
Indirect access. Measuring range: current true effective value 1A 5A 10A 100A 1000A (choose the corresponding current sensor); Surge current: 1000A (choose 1000A current sensor); Power consumption: less than 2.0VA/phase. |
| Measuring signal frequency range | 40Hz ~ 70Hz |
| Display | 3.5-inch TFT LCD + touch screen |
| Memory capacity | 16 M bytes FLASH |
| External storage interface | USB (USB flash drive can be plugged in) |
| Power supply | Rechargeable lithium battery can work for 5~6 hours when fully charged |
| External power supply |
AC100~240V/DC16.8V-1A power adapter/charger |
