Products » PQ Meters Class A » PQM4000

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Class A DIN 192x144 power quality analyzer for CTs

  • Additional voltage and current measurement channels in comparison with other standard three-phase devices.
  • Current inputs for CTs or for clamps to grant an accurate current measurement.
  • Continuous monitoring of the power quality and Class A certified measurements for voltage characteristics.
  • Simultaneous recording of events, Min/Avg/Max LOG and energy counters.
  • Several possibilities for instrument data transmission: Ethernet, WIFI, Modbus RTU/TCP, USB.
  • User-friendly instrument web interface with multilingual pages.

  • Power monitoring & control systems
  • Switchboards, gensets, motor control centers, etc.
  • Individual machine load monitoring
  • Power demand analysis and management
  • Harmonic monitoring
  • Remote metering and cost allocation
  • Motor inrush current studies

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wintool CT Catalogue
Specifications for IEC/EN 61000-4-30 compliance

Frequency (5.1)
Uncertainty ±10 mHz
Measuring range 42.5 Hz - 57.5 Hz, 51Hz - 69 Hz

Magnitude of supply voltage (5.2)
Uncertainty ±0.1% of Udin
Measuring range 10% - 150% of Udin

Flicker (5.3)
Uncertainty ±5% of reading
Measuring range 0.2 - 10 Pst

Supply voltage dips and swells (5.4)
Uncertainty Magnitude: ±0.2% of Udin
Duration: ±1 cycle

Voltage interruptions (5.5)
Uncertainty Duration: ±1 cycle

Unbalance (5.7)
Uncertainty ±0.15%
Measuring range 0.5% - 5% u2 0.5% - 5% u0

Harmonics (5.8)
Uncertainty IEC/EN 61000-4-7 Class I
Measuring range 10% - 200% Class 3 of IEC/EN 61000-2-4


Interharmonics (5.9)
Uncertainty IEC/EN 61000-4-7 Class I
Measuring range 10% - 200% Class 3 of IEC/EN 61000-2-4

Mains signalling (5.10)
Uncertainty ±5% of reading with measuring range 3%-15% of Udin
±0.15% of reading with measuring range 1%-3% of Udin
Measuring range 0% - 15% of Udin

Rapid voltage changeS (5.5)
Uncertainty Magnitude: ±0.2% of Udin


Underdeviation and overdeviation (5.8)
Uncertainty Consistent with "Magnitude of supply voltage (5.2)"
Measuring range 10% - 150% of Udin

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: P-N: max 580 V RMS CAT III, L-L: max 1000 V RMS CAT III
U4 voltage input for direct connection: max 580 V RMS CAT III
Voltage input crest factor: 2
Voltage input impedance: >2 MΩ/phase
CT secondary: selectable 1A, 5A RMS
Maximum current: 7A RMS
CT input burden: 0.04 VA
Crest factor: 3
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
U4 voltage: ±0.2% measurement
Currents: ±0.2% measurement (device)
Powers: ±0.2% measurement
Frequency: ±8 mHz
Harmonics: Class 1 (IEC/EN 61000-4-7)
Realtime clock (RTC): <1s in 24h without synchronisation; <5ms with GPS synchronisation
Active energy: Class 0.5S, compliant to IEC/EN 62053-22
Reactive energy: Class 1, compliant to IEC/EN 62053-23

I/O channels
Digital inputs: 4 optoisolated, 24 VDC ±20%
Digital outputs: 4 passive optoisolated (PhotoMOS), 24 VDC-50 mA
Analog outputs: 4 optoisolated, 4 ... 20 mADC, max load 500 Ω
Digital input delay time: max 10 ms
Digital input consumption: max 7 mADC
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

System memory: 128 MB Flash, 256 MB RAM
Recording memory: 16 GB

Ethernet ports: 2 Auto MDIX RJ45 10/100 Base Ethernet
RS485 port (slave): Optoisolated, 0.5UL, 2400"¦115200bps
WIFI antenna: Passive antenna, SMA connector on rear panel
GPS antenna: Active patch antenna, remote powered, SMA connector
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

Installation and use code: PQI-A-FI1
Operating temperature (limit range): FI1, 3K6 -25 ... +55 °C
Storage temperature: -25 ... +75 °C
Relative humidity: 95% max without condensing
Altitude: max 2000 m AMSL

Mechanical characteristics
Size: Front (LxH): 191x143 mm, Rear (LxHxD): 183x135x190 mm
Weight: 1400 g

Safety standards
Product compliance: IEC/EN 62586-1, IEC/EN 62586-2
Certification: Class A, IEC/EN 61000-4-30:2015 Ed.3 for voltage
Safety: CAT III power supply, insulation class 2, 600 V
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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