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KPM31 Single Phase Digital Energy Meter

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Description
The KPM31 Single Phase Digital Energy Meter is engineered with cutting-edge microprocessor and digital signal processing technology. This advanced device excels in comprehensive single-phase power measurement, display, energy accumulation, and network communication. With its robust anti-interference capability, it operates reliably even in environments with significant electromagnetic interference.
Features

  • Measures voltage, bidirectional current, active power, reactive power, apparent power, power factor, frequency, active energy, and reactive energy.
  • Multi-rate energy statistics with up to 8 time slots per day and 4 tariffs.
  • 12-month historical power statistics function for enhanced tracking.
  • Rated current range from 5A to 63A.
  • Includes 1 passive optical coupler for active pulse outputs.
  • Default Modbus communication via RS485 interface; optional Wi-Fi communication.
  • LCD display showcasing various power parameters and information.
  • Built-in clock and maintenance-free battery for permanent data retention after power outages.
  • Large-capacity magnetic retention relay for load on-off control.
Application

  • All power parameter measurement.
  • Energy measurement and electrical fire monitoring and control.
  • Replacement for three-phase power meters and three-phase electricity transmitters.
  • Ideal for transformers, generators, capacitors, and electric motors distributed detection.
  • Applicable in medium and low-pressure systems.
  • Compatible with SCADA, EMS, and DCS integrators.
Specifications

KPM31 Multifunction Meter – Technical Parameters
Input Voltage Rated Voltage AC 110V/220V
Overall Power Consumption <5VA
Frequency Range 45~65Hz
Input Current Rated Current 1.5(6)A, 10(60)A, 20(100)A
Frequency Range 45~65Hz
Measurement Accuracy Voltage ±0.2%(0.01V)
Current ±0.2%(0.01A)
Active Power ±0.5%(0.1W)
Reactive Power ±2.0%(0.1kvar)
Active Energy ±0.5%(0.1kWh)
Reactive Energy ±2.0%(0.1kvarh)
Power Factor ±0.5%(0.001)
Frequency ±0.02Hz(0.01Hz)
Clock Clock Accuracy <0.5S/D
Communication Communication Interface RS485, Photoelectric Isolation Interface
Electrical Insulation Communication Protocol Modbus-RTU, 1200~38400bps
Power Frequency Withstand Voltage AC 2kV/min~1mA Input-output-power source
Insulation Resistance >50MΩ
Impact Voltage 5kV (Peak), 1.2/50us
Working Environment Operating Temperature -25℃ ~ +70℃
Relative Humidity 5%~95% No condensation
Storage Temperature -30℃ ~ +75℃
Altitude No more than 4000m
Electromagnetic Compatibility Surge (Impact) Immunity GB/T 17626.5-2008, Level 4
Electrical Fast Burst Immunity GB/T 17626.4-2008, Level 4
Electrostatic Discharge Immunity GB/T 17626.2-2006, Level 4
Power Frequency Magnetic Field Immunity GB/T 17626.8-2006, Level 4

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