PD7777- □ H series digital harmonic multifunctional meter

• Adopting dot matrix color LCD graphic display, the interface is intuitive and friendly
• Measure voltage, current, active/reactive power, apparent power, power factor, frequency, and other electrical parameters in the power network
• Accurately measure four quadrant electrical energy
• Power quality monitoring:

Measure the 2-31st harmonic content and total harmonic distortion rate of voltage and current in the power network, and display the harmonic bar chart

Measure grid quality parameters such as voltage, current positive sequence, negative sequence, zero sequence, and imbalance in power networks

Real time display of voltage and current waveforms online, observing the real-time situation of the power grid, and realizing functions such as phase sequence judgment of voltage and current, phase failure detection, etc

• Module input and output functions:

Provide 1 active power and 1 reactive power pulse output

Provide multiple relay switch output functions, which can achieve upper and lower limit alarm output

Provide 4-channel switch input status indication function, using passive dry node resistance signal input method

• Standard RS-485 communication interface, using standard ModBus RTU communication protocol, baud rate can be set
• Each switch has 500 SOE event recording functions
• Equipped with 500 manual and automatic fault waveform recording functions, saving continuous load curve data records for one year
• Instrument current/voltage ratio, grid type, power display mode, instrument communication address, baud rate, transmission output object
• Parameters such as transmission output range, alarm object, alarm upper and lower limits can be programmed and set arbitrarily