HR-CX Microcomputer Harmonic Elimination Device

  • Overview
  • Characteristic
  • Selection Guide

HR-CX series microcomputer harmonic elimination device is my company in the 66KV, 35KV, 10KV, 6KV, 3KV and below voltage of neutral point ungrounded or by resistance, arc suppression coil grounding system, because the ferromagnetic resonance of voltage transformer and frequent ( PT ) burn even explosion malignant accidents, a intelligent newly developed production of harmonic elimination device. The device uses the80C196 microcontroller as the core element detection, control, with high power, no contact element elimination, with liquid crystal display ( LCD ), signal lamp, micro printer ( optional) as human-computer interface, with the most advanced intelligent software, making the operation more simple, more intuitive, more accurate.

The device can real-time monitor and display the voltage component PT open delta voltage 17Hz, 25Hz, 50Hz, 150Hz four kinds of frequency, failure can quickly start, over-voltage, and can distinguish ferroresonance and single-phase grounding alarm signal is given, the corresponding; as is the resonance fault, can quickly start the harmonic elimination device harmonic elimination; and is equipped with a communication interface to transmit the fault information to the relevant departments, to realize the remote control.


  • Data acquisition, calculation, logic judgment, control output speed, high precision, antijamming, self checking and self recovery ability;
  • Comprehensive domestic advanced technology, field operation experience, years of stable performance, safe and reliable;
  • Real time display of PT open delta voltage frequency of 4 (3 Frequency division /17Hz, 2 Frequency division /25Hz , Power frequency/50Hz, Frequency doubling /150Hz) voltage component;
  • Can distinguish ferroresonance overvoltage, and the single phase grounding, and the ferromagnetic resonance rapidly eliminated; for various faults may give warning signals and display, print and save the relevant information; and can be timely print output fault report ( voltage component fault type, fault time and PT opening angle of three voltage 4 frequency);
  • Have memory function, can store 40 times the fault information of recent, not to lose after power off;
  • Using high power, no contact harmonic components, rapid start;
  • Through the prompt of Chinese menu and panel push-button tuning, debugging and maintenance is simple and convenient, applicable to a variety of voltage levels of PT;
  • Configurable communication interface to all kinds of fault information is transmitted to the relevant departments, is suitable for unattended substation.


Required to indicate the power supply(DC220 or DC110)¡¢ voltage level¡¢the number of the bus segment and whether configure the printer.
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