GB/T 14549-1993 "Power Quality - Harmonics in Public Supply Network" specifies limits for total voltage harmonic distortion, with 5% for 380V networks. During the design selection stage, engineers need to confirm whether the distortion level after connecting harmonic sources is within the limits and calculate the reactive power compensation capacity. On-site conditions often lack fixed monitoring devices, which places demands on the environmental adaptability and analysis capabilities of portable instruments.
The DZ-6800 Power Quality Analyzer adopts a portable structure, with a total weight of approximately 1.5kg, and a built-in lithium battery that supports continuous operation for more than 8 hours. When used in industrial sites, the device meets EMC Level IV immunity requirements, has an IP65 protection rating for outdoor work, and operates over a temperature range of -30°C to 70°C, enabling stable operation in scenarios such as distribution rooms and outdoor box substations.
The instrument supports 1st to 50th order voltage and current harmonic analysis, and harmonic measurement results are provided in both data list and waveform display modes. In vector diagram mode, it can display each phase value and phase difference, and automatically calculate the amount of local reactive power compensation based on measured data, providing a reference basis for compensation scheme design. Basic measurement items include voltage, current, frequency, active power, reactive power, apparent power, power factor, and energy, while also supporting three-phase unbalance detection.
Design and selection personnel can focus on the instrument's harmonic analysis range and vector diagram functions according to the on-site harmonic order distribution and compensation accuracy requirements. For scenarios requiring simultaneous recording of energy parameters, comprehensive judgment can be made by combining energy measurement with harmonic data. The specific configuration should be determined in conjunction with the on-site voltage level and test cycle.
