The APView400 Power Quality Online Monitoring Device utilizes a high-performance multi-core platform and an embedded operating system. It measures power quality indicators in accordance with the methods specified in IEC61000-4-30 "Testing and Measurement Techniques - Methods for Power Quality Measurement." The device integrates harmonic analysis, waveform sampling, voltage dips/swells/interruptions, flicker monitoring, voltage unbalance monitoring, event recording, and measurement control functions. It meets the national standard Grade A requirements in all aspects, including the standardization of power quality indicator parameter measurement methods, measurement accuracy of indicator parameters, clock synchronization, and event alert functions. It can meet the power quality monitoring requirements of power supply systems up to 35kV and is widely applicable to power quality monitoring in industries such as chemicals, steel, metallurgy, data centers, and transportation buildings.

The human-machine interface of the device includes a liquid crystal display, LED indicator lights, and buttons. The device's liquid crystal features a 5-inch color LCD with a resolution of 800*480, capable of displaying real-time data, power quality, event logs, user-defined values, system settings, and device debugging data.

The device is installed embeddedly, first making the holes on the cabinet (screen) panel as shown in the figure, then placing the device into the holes as illustrated, until the device panel is flush against the cabinet (screen) panel. Next, install the fixed bracket, and screw the screws into the screw holes to securely fasten the device to the cabinet (screen).