Overview
Power quality refers to the quality of the AC power supply via the utility grid to the user, which normally means the good or bad situation of the electric energy in transmission line. Power quality problems are mainly caused by the load side of the terminal. For example, impact reactive load will lead to serious fluctuates to power network voltage, and decrease the quality of power supply.
Technical Specifications
Project | Data | |
Number of measurement channels | Four voltage channels, four current channels | |
Measuring range | Voltage | 0-900V |
Current | Small clamp:diameter 8mm，5A/25A(standard) Medium clamp:diameter 50mm，100A/500A(Optional) Large clamp:diameter 125×50mm，400A/2000A(Optional) | |
Phase angle | 0.000－359.999° | |
Frequency | 42.5－69Hz | |
Measuring step | Voltage | 0.001V |
Current | 0.0001A | |
Phase angle | 0.001° | |
Power | active power 0.01W、reactive power 0.01Var | |
Frequency | 0.0001Hz | |
Voltage measurement accuracy | ≤0.1% | |
Current measurement accuracy | ≤0.3% | |
Phase angle measurement accuracy | ≤0.1° | |
Power measurement accuracy | ≤0.5% | |
Frequency measurement accuracy | ≤0.01Hz | |
Harmonic analysis times | 2－64 times | |
Harmonic voltage measurement error | Harmonic content＞1% Nominal value：≤1% RD Harmonic content＜1% Nominal value：≤0.05%FS | |
Harmonic current measurement error | Harmonic content＞3% Nominal value：≤1% RD Harmonic content＜3% Nominal value：≤0.05%FS | |
Three phase voltage unbalance error | ≤0.2% | |
Three phase current unbalance error | ≤0.5% | |
Voltage fluctuation accuracy | 5% | |
PST measurement time | 10min | |
PLT measurement time | 2h | |
PST/PLT measurement error | ≤5% | |
Screen | 1280×800、True color LCD | |
Charging Power | AC220V±15% Frequency 45Hz-65Hz | |
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