When measuring three-phase voltage and current on site, how can one determine whether harmonic distortion exceeds the limits of GB/T 15945? The DZ-7500 Power Quality Analyzer is designed for this need, supporting simultaneous measurement of true RMS voltage and current and total harmonic distortion (THD), and can store and analyze the harmonic content rate of each order to help locate the source of distortion.
The instrument can measure three-phase voltage (range 0-600V, accuracy ±0.2%), three-phase current (range 0-10A, expandable with clamp-on transformers), active/reactive/apparent power, power factor, frequency (45-65Hz), and energy accumulation. Harmonic analysis supports the 2nd to 50th orders, and the measurement error of total voltage distortion rate does not exceed ±0.5%.
It is suitable for power quality surveys in substations, industrial distribution cabinets, and renewable energy grid connection points. When selecting, technical engineers should consider: whether harmonic and power need to be measured simultaneously, whether the current range covers the on-site load, and whether data export and host computer analysis are supported. The DZ-7500 provides an RS485 communication interface for easy integration into monitoring systems.
Note: The above technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
