The universal measuring device PEM575 is used to record and indicate electrical quantities of a
public electricity network. The scope of measurements ranges from currents and voltages
through energy consumption and performance to total harmonic distortion and voltage quality
assessment. The active energy measurements are in compliance with the DIN EN 62053-22
class 0.2 S accuracy standard.The current inputs are connected via external …/1 A or …/5 A
measuring current transformers.

Product Details


  • Accuracy class according to IEC 62053-22: 0.2 S
  • Parameters
    – Phase conductor voltages UL1, UL2, UL3 in V
    – Line voltages UL1L2, UL2L3, UL3L1 in V
    – Phase currents I1, I2, I3 in A
    – Neutral current (calculated) I4 in A
    – Frequency f in Hz
    – Phase angle for U and I in °
    – Power per phase conductor S in kVA, P in kW, Q in kvar
    – Total power S in kVA, P in kW, Q in kvar
    – Displacement factor cos (φ)
    – Power factor λ
    – Active and reactive power import in kWh, kvarh
    – Active and reactive power export in kWh, kvarh
    – Voltage unbalance in %
    – Current unbalance in %
    – Harmonic distortion (THD) for U and I
    – Harmonic factor for I
  • Programmable setpoint monitoring
  • LED pulse outputs for active and reactive power
  • Modbus RTU communication via RS-485
  • 2 digital outputs
  • Requirements of energy and current for particular time frames
  • Peak demands with timestamps
  • Individual, harmonic components in current and voltage up to the 31st harmonic
  • Minimum and maximum values
  • Waveform test (12.8 kHz)
  • Data recorder
  • Sag/swell detection
  • High-resolution waveform recording
  • Detection of transient events


  • As a compact device for front panel mounting, the PEM575 is a replacement for analogue indicating instruments
  • Typical application in low and medium-voltage networks (via measuring voltage transformer)
  • Power quality monitoring
  • Collection of relevant data for energy management systems
  • Energy consumption allocation to cost accounting centers
  • High-resolution recording of the waveforms allow an analysis of power quality phenomena