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The main characteristics of power quality monitoring instruments

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The main characteristics of power quality monitoring instruments

Release date:April 23, 2019 Author: Click:

       AC Power Quality MonitorThe main characteristics of are:
1. Adopting a DSP+ARM+CPLD core, data processing is fast and accurate, with powerful functions, greatly improving testing efficiency and level, resulting in higher system integration and stronger stability. It is also equipped with a dedicated watchdog reset circuit, which can automatically reset the device in strong interference environments, ensuring normal operation.
2. Multiple testing channels, flexible configuration, capable of measuring 8 channels × 3-phase voltage signal, 8-way × 3-phase current signal; Can provide multiple alarm and trip relay contacts; The voltage input adopts a high voltage isolation module, and the current input adopts a high-precision current transformer to isolate the input signal from the measurement system, greatly improving the anti-interference ability and safety of the device.
3. Adopting a large screen LCD display screen, with a friendly all Chinese interface and menu system, the operation is simple and convenient, and can display real-time parameters such as power quality, as well as voltage and current harmonic analysis graphics and tables.
4. Using benchmark algorithms, there is no approximate calculation for harmonics, three-phase imbalance, flicker, and fluctuations. High precision A/D (16 bit) is used, and sampling is conducted simultaneously. The acquisition rate is 12.8 kHz, which meets the requirements of national standard A-level instruments.
5. OnlinePower quality monitoring deviceBuilt in 512M memory, data is stored in units of 5 minutes, and each channel can continuously store 4 months of historical data.
6. Supports multiple communication methods such as TCP/IP, RS232, 485, and supports ministerial 103 and MODBUS protocols, enabling data upload functionality Single or multiple GDDN-500C devices can form a screen, and the screen can be configured with an industrial computer, LED display, and background analysis software to form a on-site workstation. All data can also be remotely transmitted to the monitoring center. Multiple GDDN-500C devices can form a remote harmonic monitoring network, transmitting all data communication to various workstations or monitoring centers, and achieving remote multi-level monitoring and hierarchical management through backend analysis software.

AC Power Quality Monitor

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Keywords:Power quality tester,Online monitoring instrument for power quality,Power quality monitoring screen

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