Power Quality and Energy Measurement
Product description:
The digital universal measuring device PEM735 is suited for measuring and displaying electrical quantities of electricity networks. The device measures currents and voltages, energy consumption and power, and displays the individual current/voltage harmonics for assessment of the power quality in accordance with DIN EN 50160. The accuracy of active energy measurements corresponds to class 0.2 S in accordance with DIN EN 62053-22 (VDE 0418 part 3-22). The current inputs are connected via external …/1 A or …/5 A measuring current transformers.
• Continuous monitoring of the voltage quality in accordance with DIN EN 50160
• Collection of relevant data for energy management systems
• High-resolution waveform recording allows analysis of power quality phenomena
• Class A power analyser, certified according to DIN EN 61000-4-30
• Monitoring the quality of the voltage in accordance with DIN EN 50160
• Accuracy class according to IEC 62053-22: 0.2 S
• TFT colour display (640x480) 5.7“
• Modbus RTU and Modbus TCP
• 4 current inputs
• 5 voltage inputs
• 1 GB internal memory
• Panel mounting 144x144
• Integrated web server
• Data export via FTP: comtrade, PQDIF
• Flicker measurement
• Detection and recording of transients (40 μs)
• Sampling rate: 512 samples/cycle
• Freely configurable recorders for waveform, consumption and long-term recording
• IEC 61850
Description of function:
• Sampling rate of the measuring channels: 25.6 kHz
• Calculation of the total harmonic distortion THDU/THDI: harmonics up to the 63rd harmonic
• Individual current/voltage harmonics
• Password protection
• History memory for minimum and maximum values of current, voltage, energy, power
rating etc. for each month.
• Inputs and outputs:
– 6 digital outputs, 8 digital inputs (1 kHz sampling rate)
– 24 adjustable parameter setpoints
– System protocol: 1024 events, setup changes, setpoint alarming, DI status changes,
DO switching operations
• Communication:
– Galvanically isolated RS-485 interface (1.200 to 19.200 bit/s)
– Modbus RTU protocol
– Modbus TCP (10/100 MBit/s)
Standards:
The universal measuring device for Power Quality and Energy Measurement/PEM735 was developed in accordance with the following standards: IEC 62053-22(VDE 0418 Part 3-22), DIN EN 61557-12 (VDE 0413-12), DIN EN 50160, DIN EN 61000-4-30 (VDE 0847-4-30), DIN EN 61000-4-7 (VDE 0847-4-7), DIN EN 61000-4-15 (VDE 0847-4-15)
Wiring diagram:
Dimensions:
Operating Elements:
