PQM4000 Power Quality Monitor According to EN 50160 Standard




PQM4000: Class A DIN 192x144 power quality analyzer for CTs

• Harmonics and interharmonics measurement
• Data recording for further EN 50160 analysis
• Data recorded in standard PQDIF and CSV file formats
• Embedded web server
• Communication on Ethernet, RS485 and WIFI
• USB host port for data transfer
• Integrated GPS for accurate timing
• High resolution TFT display with capacitive touch
• Internal rechargeable backup battery
• Certified according to IEC/EN 61000-4-30:2015 Ed.3, Class A for voltage characteristics

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The Sensor measures: AC Current
Power Supply: from the AC network
---------- INDUSTRY ------------ Network Analyzers
  • Up to 4 voltage and up to 5 current channels
  • Voltage inputs for direct connection or through PT/VT
  • Current inputs availability for standard CT, clamp or Rogowski coil
  • Voltage characteristics monitoring according to IEC/EN 61000-4-30
  • Parameter recording for statistical analysis according to EN 50160
  • Harmonic and interharmonic measurement
  • Voltage Flicker measurement
  • Integrated web server for complete device management
  • Two Ethernet and one RS485 ports for easy communication
  • One front USB host port for memory stick
  • RTC synchronisation for accurate time information by NTP or internal GPS module
  • GB range internal memory for data recording
  • Data recorded in standard PQDIF and CSV formats
  • Panel mount 192x144 DIN size
  • High resolution TFT screen with capacitive touch
  • Isolated digital inputs, digital outputs and 0-20mA analog outputs
  • Integrated backup rechargeable battery

Realtime parameters

  • 3 phase system Voltage, current, frequency
  • Neutral-ground voltage, Neutral and Earth leakage current (optional)
  • Active, apparent and reactive power
  • True power factor and Displacement power factor
  • Voltage and current harmonics up to 50th
  • Voltage and current interharmonics with 5Hz bin
  • Voltage Flicker (Plt, Pst)
  • Voltage and current THD factor
  • Voltage Unbalance, symmetrical components
  • 4 quadrant active, apparent and reactive energy counters
  • Voltage and current phasor angles
  • Rapid voltage changes, Voltage under and overdeviation
  • Mains signalling component values

Power Supply
Auxiliary power voltage: 85...285 VAC 50/60 Hz / 65...250 VDC
Auxiliary power consumption: 15 VA max
Fuse: 250 VAC / 500 mA T type delayed
Backup battery: Li-Ion, 2500 mAh (>15 min autonomy)

Measurement inputs
Three-phase voltage inputs for direct connection / PT: Phase-neutral: max 580 V RMS CAT III
Phase-phase: max 1000 V RMS CAT III
Three-phase voltage inputs for electronic VT: Phase-neutral: max 4.5 V RMS
Crest factor: 2
V4 voltage input for direct connection: max 150 V RMS CAT II
V4 voltage input for electronic VT: max 4.5 V RMS
CT inputs (only for instrument with CT inputs): max 7 A RMS
CT burden (only for instrument with CT inputs): 0.04 VA
Current clamp inputs with voltage output (only for instrument with clamp inputs): max 4.5 V RMS
Rogowski coil inputs (only for instrument with clamp inputs): max 10V RMS
Current full scale with Rogowski coils: 4 selectable scales, 100/500/3000/25000A RMS
Wiring modes: Three phases, 4 wires, 3 currents (3.4.3)
Three phases, 3 wires, 3 currents (3.3.3)
Three phases, 3 wires, 2 currents (3.3.2)
Single phase, 2 wires, 1 current (1.2.1)
Input impedance: >2 MΩ/phase for direct voltage inputs
>100 kΩ for low level inputs (max 4.5 V RMS)
Frequency range: 42.5...57.5 Hz / 51...69 Hz
Frequency reference channel: Phase 1/Line 12 voltage
Sampling: Simultaneous, 51.2 kHz @50 Hz

Three-phase voltage: ±0.1% Un over 10 ... 150% Un range
V4 voltage: ±0.2% measurement
Currents: ±0.2% measurement (device)
Powers: ±0.2% of measurement
Frequency: ±8 mHz
Harmonics: Class 1 (IEC/EN 61000-4-7)
Internal realtime clock (RTC): < 1 s for 24h period without synchronisation
< 5 ms with GPS synchronisation
< 500 ms with NTP synchronisation
Active energy: Class 0.5, compliant to IEC/EN 62053-21
Reactive energy: Class 1, compliant to IEC/EN 62053-23

Calculation technique
Voltages: Compliant to IEC/EN 61000-4-30, Class A
V4 voltage: Continuous sampling, 1 cycle
Currents: Continuous sampling, 1 cycle
A4, A5 Currents (optional): Continuous sampling, 1 cycle
Voltage Unbalance: Compliant to IEC/EN 61000-4-30, Class A
Voltage and Current Harmonics, THD: Up to 50’th order, compliant to IEC/EN 61000-4-7, Class 1
Voltage and Current Interharmonics: 5Hz bin, compliant to IEC/EN 61000-4-7
Voltage Flicker: Compliant to IEC/EN 61000-4-15
Frequency: Compliant to IEC/EN 61000-4-30, Class A
Rapid voltage changes: Compliant to IEC/EN 61000-4-30, Class A
Powers: Active, apparent and reactive, four quadrants
True and Displacement Power Factor: Four quadrants
Mains signaling: 5 user frequency
Aggregations: Compliant to IEC/EN 61000-4-30, Class A
Voltage event hysteresis: Programmable 1...25% Un

I/O channels
Digital inputs: 4 optoisolated, 24 VDC ±20%
Digital outputs 4 optoisolated, up to 250 VAC/DC
Analog outputs: 4 optoisolated, 4 ... 20 mADC, max load 500 Ω
Digital input delay time: max 10 ms
Digital output delay time: In alarm mode, max. 200 ms
Digital output pulse time: In pulse mode, 50 ms±2
Analog output reaction time: max 200 ms
Digital input consumption: max 7 mADC

System memory: 128 MB Flash, 128 MB RAM
Recording memory: 4 GB (8GB, 16GB optional)
Ethernet ports: 2 Auto MDIX RJ45 10/100 Base Ethernet
RS485 port: Optoisolated, 0.5UL, 2400…115200bps
WIFI (optional): IEEE 802.11b compliant
WIFI antenna (optional): Passive antenna, SMA connector on rear panel
GPS antenna: Active patch antenna, remote powered, SMA connector on rear panel,
Protocols: HTTP, HTTPS, FTP, SFTP, NTP, NMEA, Modbus TCP, Modbus RTU
USB port: USB 2.0 A type socket, high speed 480 Mbit/s

RTC synchronisation
Synchronisation system: NTP and/or GPS

Environmental conditions
Operating temperature: -5 ... +55°C
Storage temperature: -25 ... +75°C
Relative humidity: 95% max without condensing
Altitude: max 2000 m
Installation & use: Internal

Mechanical characteristics
Mounting: Panel mount 192x144 DIN size
Size: Front (L x H): 191 x 143 mm (3U)
Rear (L x H x D): 183 x 135 x 190 mm
Weight: 1400 g

Safety standards
Safety: CAT III power supply, insulation class 2, 600 V
Pollution degree: 2 (EN 61010-1)
Protection degree: IP40 front panel, IP20 rear
Directive: 2006/95/EC LV, EN 61010
EMC: 2004/108/EC EMC, EN 50081-2, EN 50082-2, EN 61326/A1,
EN 55011:1998+A1:1999+A2:2002, EN 61000-6-2/-4-2/-4-3/-4-4/-4-5/-4-6/-4-11

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