The digital universal measuring device PEM575 is suited for measuring and displaying electrical quantities of a public electricity network. The PEM575 is able to perform current, voltage, energy consumption and performance measurements as well as displaying individual current/voltage harmonics for assessment of the power quality. The accuracy of active energy measurements corresponds to class 0.2 S in accordance with the reqirements of DIN EN 62053-22 (VDE 0418 Part 3-22). The current inputs are connected via external …/1 A or …/5 A measuring current transformers.

• 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
• Cost allocation of energy consumption
• High-resolution waveform recording allow analysis of power quality phenomena

• Accuracy class according to IEC 62053-22: 0.2 S
• Measured quantities
– Phase voltages UL1, UL2, UL3 in V
– Line conductor voltages UL1L2, UL2L3,
UL3L1 in V
– Phase currents I1, I2, I3 in A
– Neutral current (calculated) I0 in A
– Neutral current (measured) 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 energy import in kWh, kvarh
– Active and reactive energy export in kWh, kvarh
– Voltage unbalance in %
– Current unbalance in %
– Harmonic distortion (THD) for U and I
– k-Factor for I
• Programmable setpoint monitoring
• LED pulse outputs for active and reactive energy
• Modbus RTU and Modbus TCP
• 3 digital outputs
• Requirements of energy and current for particular time frames
• Peak demands with timestamps
• Individual, current/voltage harmonics up to the 63rd harmonic
• Minimum and maximum values
• Waveform recording (12.8 kHz)
• Data recorder
• Sag/swell detection
• High-resolution waveform recording
• Detection of transient events