Description
Overview of Portable Power Quality Meter
- The Portable Power Quality Meter is widely applied in power transmission & distribution, power electronics, motor drive and other fields.
- This power quality measurement equipment measures and analyzes AC power quality of public power grids at user terminals.
- Adopts wavelet transform to analyze harmonics of non-stationary time-varying signals.
- Measures and assesses the impact of various electrical equipment on public grid power quality under different operating conditions.
- Enables dynamic monitoring during commissioning and operation of power equipment, helping troubleshoot power quality problems and issues arising in equipment adjustment and commissioning.
- Power quality instruments detect and analyze fault causes such as circuit breaker operation anomalies, transformer overheating, motor burnout and incorrect operation of automatic devices in power systems.
- The portable power quality analyzer tests dynamic parameters of reactive power compensation and filter devices, and provides quantitative evaluation on their functions and technical specifications
Equipment List – Power Quality Analysis
| No. | Description | Quantity | Remarks |
|---|---|---|---|
| 1 | Main Unit | 1 set | – |
| 2 | Alligator Clips | 8 pcs | 5 large, 4 small |
| 3 | USB Flash Drive | 1 pc | For data storage |
| 4 | Power Adapter | 1 pc | For device charging |
| 5 | Current Clamps | 3 pcs | For current testing, one for Phase A, B and C respectively |
| 6 | Voltage Test Leads | 1 set | 4 cores: yellow, green, red, black for voltage testing |
Image of Equipment List – Power Quality Analyser
Instrument Features of Power Quality Measurement Devices
Safe and Reliable
- The voltage input adopts high-voltage isolation module (2000V, response time ≤2μs). The current input uses AC current clamps (0～50kHz, 0～5Arms), which realizes safe isolation between input signals and the measurement system. It ensures safe, reliable and convenient operation, and greatly enhances anti-interference performance.
Easy to Use
- Featured with portable design. Dimensions: 320×280×135 mm (L×W×H); light weight of 3.5 kg, easy for single-person on-site carrying and testing. Built-in high-performance lithium battery supports 8 hours of continuous operation without external power supply.
High Accuracy
- Adopts reference algorithms without approximate calculation for harmonic and three-phase unbalance measurement. Equipped with 16-bit high-precision A/D converter for simultaneous sampling at a rate of 12.8 kHz.
Powerful Software Functions
- Built on DSP+ARM+CPLD core for fast processing speed and abundant software functions. It adapts to complex testing and data processing tasks, effectively improving testing efficiency and performance.
Communication Interface
- Equipped with USB port for data storage to USB flash drives.
Comprehensive Test Parameters
- Covers all five major national standard parameters for power quality: system frequency, grid harmonics, three-phase voltage unbalance, voltage deviation, voltage swell and sag, fundamental & true RMS of voltage and current, active power, reactive power, apparent power, 2nd to 63rd harmonics, true power factor, etc.
Real-time Harmonic Monitoring
- Judges in real time whether the measured voltage and current harmonic data are normal or out of limit.
Background Management & Analysis Software
-
Dz200 Pro Power Quality Management & Analysis Software runs on WIN9X/2000/XP/NT operating systems. Please refer to the software user manual for detailed instructions.
Test Range & Specifications of Mobile Power Quality Analysers
| Item | Specification |
|---|---|
| Frequency Measurement | Range: 45～55 Hz (center frequency 50 Hz)
Measurement condition: Fundamental component of signal ≥ 80% F.S. Measurement error: ≤ 0.02 Hz |
| Input Voltage Range | 20 V ~ 650 V |
| Input Current Range | 0.06 A ~ 6 A
Optional ranges: 25 A, 200 A, 500 A, 1000 A, 2000 A, 3000 A, etc. |
| Fundamental Voltage Amplitude Error | ≤ 0.5% F.S. |
| Fundamental Current Amplitude Error | ≤ 1% F.S. |
| Phase Difference Measurement Error (Fundamental Voltage & Current) | ≤ 0.5° |
| Total Harmonic Voltage Ratio Measurement Error | ≤ 0.1% |
| Total Harmonic Current Ratio Measurement Error | ≤ 0.2% |
FAQ
Q:What is power quality?
It is the power supply status of public grids for electrical equipment, covering frequency, voltage stability, harmonics and three-phase balance. Standard power quality guarantees stable equipment operation, while poor power quality leads to equipment faults and energy loss.
Q:What device is used to accurately test grid power parameters?
A three phase power quality analyzer is a professional testing device. It collects, analyzes and records grid operation data, suitable for industrial power distribution, equipment commissioning and daily power inspection.
Q:How do enterprises solve long-term grid power operation problems?
Professional power quality engineering services solve long-term grid operation problems. They cover on-site testing, data analysis and solution customization to eliminate grid risks, reduce power loss and equipment failure rates.
Q:What are the core advantages of grid condition detection work?
The core advantages of power quality monitoring include real-time grid status tracking, potential fault early warning, less equipment damage, lower operation costs and compliant grid operation.
Q:How to select suitable testing equipment for grid detection?
You can evaluate detection accuracy, portability and data processing performance to select the best power quality analyzer for your actual on-site testing needs.
Q:What core work does grid detection and maintenance focus on?
Grid maintenance focuses on the work to professionally measure power quality. It analyzes key grid indicators to judge power supply status and support grid optimization and fault troubleshooting.
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