RISH PQM is a compact, multi-function panel mount power quality monitor, which measures, calculates and displays major electrical parameters of three phase power system like Voltage, Current, Active / Fundamental Reactive / Apparent Power and Energy, Individual Harmonics, Sags and Swells.


Energy billing
Electrical load monitoring
Product Features
Measures & Monitors more than 80 parameters:
  • All basic electrical parameters.
  • Power quality parameters (Overcurrent ,Sag & Swell).
  • Individual harmonics contains of per phase voltage and current.
True RMS measurement:
  • The instrument measures distorted waveform upto 56th Harmonic for 50Hz and upto 46th Harmonic for 60Hz.
Power Quality Measurement :
  • Sags & Swells detection
  • Measurable up to 56th (50Hz) harmonic on each phase.Maximum any 6 harmonics can be monitored simultaneously for each phase.
  • Measurement of RMS value of fundamental and per phase voltage and current harmonics.
  • (%) THD of per phase voltage and current
  • Distortion factor of individual harmonics.
  • Time stamping of sags & swells.
Graphical Analysis:
  • Per phase individual harmonic bar graph representation.
  • Real time vector representation of all 3 Phases for complete system analysis.
Energy class 0.5S as per IEC 62053 :
  • Independent Import and Export energy counter.
  • Active energy (kWh), Fundamental Reactive energy (kVArh) & Apparent energy (kVAh) measurement.
  • Accuracy as per IEC 62053-22, IEC62053-23
  • Impulse for energy verification
Onsite programmable for user desired application:
  • Onsite programmable input voltage (100VLL to 500 VLL), input current (1A or 5A) and system configuration (3 phase 4Wire (unbalanced) or 3phase 3Wire (unbalanced) network).
  • Onsite programmable CT ratio & PT ratio.
  • Wide auxiliary power supply range: 60-300VAC/DC.
Time Of DAY (TOD / TOU):
  • Easy programmable tariff schedule
  • 4 seasons
  • 4 tariffs
  • 6 time zones per day
  • 4 types of days
  • 5 tariff energy registers
  • Automatic daily profile storage for a one day, one month & one year
  • Cost per kWh calculation
Real Time Clock (RTC):
  • Displays time and date.
Phase sequence detection:
  • Incorrect phase sequence indication or phase failure indication on any of the input voltages.
Direct remote access:
  • Remote access of measured parameters.
  • User Assignable Registers for MODBUS.
  • Programmable baud rates up to 38.4kbps.
  • Remote configuration of the Instrument via MODBUS.
Limit (Alarm) & Pulse Relay Output:
  • Potential free, very fast acting relay contact
  • Configurable as pulse output which can be used to drive an external counter for energy measurement.
  • Configurable as limit (alarm) switch.
Compliance to International Safety standards:
  • Compliance to International Safety standard IEC 61010-1- 2010
EMC Compatibility:
  • Compliance to International standard IEC 61326