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Index: WMGBPQM702
Power quality analyzer
Technical Specification
  • Description

    TO THE IEC 61000-4-30

    • Power to the analyzer is supplied from tested mains (internal power supply) and is used in all types of networks from 64 V to 1000 V.
    • With particular emphasis on measurements at low voltage poles, due to the ease of connection.
    • Has an independent power supply socket, especially suited for voltage measurements for transformers and DC circuits.
    • Remote control and data transfer through a built-in GSM modem (GPRS).
    • Anti-theft feature - SMS notification in the event of position change - built-in GPS receiver.
    • Real-time clock synchronized to GPS protocol.

    Press article:  Very new and very fast power quality analyzer - PQM-703

  • Technical Specification

    Possible measurements:

    • Measurements according to EN 50160
    • Voltage L1, L2, L3, N-PE
      - average, minimum, maximum and instantaneous values, range to 1000 V, ability to work with voltage transformers,
    • Current L1, L2, L3, N (four inputs)
      - average, minimum, maximum and instantaneous values, measurement current with range to 3 kA (depends on used clamp), ability to work with current transformers,
    • Crest factor for voltage and current,
    • Frequency from 40 Hz to 70 Hz ,
    • Active, reactive, distortion, apparent power, including the type of reactive power (capacitive, inductive),
    • Power recording:
      - Budeanu method,
      - IEEE 1459,
    • Active, reactive, apparent energy,
    • Power factor, cosφ, tgφ,
    • K factor (transformer overload caused by the harmonics),
    • Up to 50th harmonics for voltage and current,
    • Total Harmonic Distortion (THD) for voltage and current,
    • Short-term (PST) and long-term (PLT) flicker,
    • Unbalance of voltage and current,
    • Current events detection including waveforms recording,
    • Current and voltage waveforms recording after each averaging period.

    The device is designed to work with networks:

    • with nominal frequency 50/60 Hz,
    • with nominal voltage:
       64/110 V; 110/190 V; 115/200 V; 127/220 V; 220/380 V; 230/400 V; 240/415 V; 254/440 V; 290/500 V; 400/690 V,
    • DC network

    Supported networks:

    • single-phase,
    • two-phase with common N conductor,
    • three-phase star connection with and without N conductor,
    • three-phase delta.


    Specification Range Resolution Accuracy  
    AC voltage (TRMS) - 0,0…1000,0 V 0,01 % Un ±0,1% Un
    Crest Factor Voltage 1,00…10,00 (≤1,65 for voltage 690 V) 0,01 ±5%
    Crest Factor Current 1,00…10,00 (≤3,6 Inom) 0,01 ± 5% m.v.
    AC current TRMS - depends on the clamp* 0,01 % of nominal range ±0,1% of nominal range (add clamps accuracy)
    Frequency - 40,00...70,00 Hz 0,01 Hz ±0,01 Hz
    Active, reactive, apparent power and distortion - depends of configuration (transformers, clamp) up to 4 decimal places depends on configuration (transformers, clamp)
    Active, reactive apparent energy - depends of configuration (transformers, clamp) up to 4 decimal places the same as above
    cosφ and Power Factor (PF) - 0,00...1,00 0,01 ±0,03
    tgφ - 0,00...10,00 0,01 depends on Active and Reactive power accuracy
    Harmonics Voltage same as for AC voltage TRMS same as for AC voltage TRMS ±5% Uh for Uh ≥ 1% Un ±0,05% Un for Uh < 1% Un
    Harmonics Current same as for AC current TRMS same as for AC current TRMS ± 5% Ih for Ih ≥ 3% In ± 0,15% In for Ih < 3% In
    Total Harmonics Distortion Voltage 0,0..100,0% 0,1% ±5%
    Total Harmonics Distortion Current  0,0..100,0%  0,1%  ±5%
    Harmonics active and reactive power - depends on configuration (transformers, clamp) depends on current and voltage minimum value -
    Angle between voltage and current harmonics - -180,0…+180,0o 0,1o ±(h x 1o)
    K-Factor - 1,0...50,0 0,1 ±10%
    Flicker - 0,20...10,00 0,01 ±5%
    Unbalance Voltage and Current 0,0...20,0% 0,1% ±0,15% (absolute error)

    *Clamp F-1/F-2/F-3:0..3000 A (10000 Ap-p)

    *Clamp C-4: 0..1000 A (3600 Ap-p)

    *Clamp C-5: 0..1000 A (3600 Ap-p)

    *Clamp C-6: 0..10 A (36 Ap-p) (without current transformers)

    *Clamp C-7: 0...100 A (360 Ap-p )

  • Files
    • Changes in 1.42 version (2020.05.12):

      • Added Ukrainian language.
      • Modified recording acc. to Chilean standard: added 10-minute average currents, active power (P+ and P-) and apparent power.
      • Modified recording acc. to Polish and Russian standards: added 10-minute average currents.
      • Changed connection error detection threshold when checking sum of all currents (3-phase 3- and 4-wire circuits). Detection algorithm is now less sensitive. To detect such error, the current sum RMS must be greater than 25% of the largest among all measured current channels.
      • Fixed bug when "INF" or zeroes were displayed in the measurement results table instead of values in amperes; this bug occured when recording of DC current was enabled, and when zeroing current feature was active in at least one current channel.

      Changes in 1.41 version (2019.09.20):
      New features:

      • Added recording of supplied and received active powers (15-min) for configurations with Polish standards. Added displaying of maximum values of both 15-min active powers in the reports acc. to Polish standards.
      • Formatting of memory card restores default measurement configuration.
      • Adjustments in synchronization of RMS1/2 of current channels to conform with the IEC 61000-4-30 Ed.3.0.
      • Added entries with memory card type and GPS module in the LOG file.


      • Optimization of used memory space when aggregation waveforms are recorded.
      • Improvements in GSM module operation.
      • Other minor fixes.

      Changes in 1.40 version (2019.04.23):

      • Added support for automatic probe type recognition (requires hardware version min. HWg and Sonel Analysis 4.4.2).
      • Added checking of instantaneous current sum of the connected current probes.
      • Added zeroing of the recorded frequency values if the reference phase voltage is too small.
      • Fixed recording of TDD in 200ms averaging period mode.
      • Fixes in the feature of zeroing parameters when measured current is below set threshold.
      • Corrected averaging method of phase angles between voltage and current harmonics.
      • Other minor fixes.

      Changes in 1.34 version (2018.12.21):

      • Added support for F-xA1 current probes (flexible probes, 1.5 kA range).
      • Added support for F-xA6 current probes (flexible probes, 6 kA range).
      • Added support for chilean standard recording.
      • Added measurement of TDD (Total Demand Distortion).
      • Added multi-point phase synchronization functionality between several analyzers synchronized with the GPS time.
      • Fixed problem that prevented remote communication via VPN with analyzer connected to local network through Wi-Fi (applies to PQM-710 and PQM-711).
      • Various GSM communication fixes.

      Changes in 1.33 version (2018.11.06):

      • Fixed recording in half-period mode (bug occurred in the v1.32 firmware).
      • Improved displaying waveforms in Live mode.

      Changes in 1.32 version (2018.10.02):

      • Added displaying of absolute harmonics angles of voltage and current in the LIVE mode.
      • Improvements in Wi-Fi Access Point mode.

      Changes in 1.30 version (2018.08.23):

      New features:

      • Added support for recording of Four-Quadrant parameters – reactive energy and tan(φ).
      • Added support for RVC (Rapid Voltage Change).
      • Added new operation mode for Wi-Fi (Access Point).
      • Sign of supplied active energy counter is now positive.

      Changes in 1.25 version (2017.12.21):

      New features:

      • Added waveshape variation voltage events.
      • Added phase-jump voltage events.
      • Added colors for plug icon on top bar: orange - charging in progress, green - charging completed, red - charging suspended.
      • Added support for switching voltage reference channel for frequency measurement and PLL source.


      • Fixed bug in handling TID I events.
      • Frequency reading in LIVE and analyzer display is zeroed if voltage on reference channel is lower than 5V.
      • Fixed Russian translations.

      Changes in 1.20 version (2017.04.12):

      • Expanded information about connection correctness of analyzer.
      • Disabled event detection in Unpe voltage channel for the following parameters: Crest Factor, THD, TID, harmonics, interharmonics.
      • Increased resolution for voltage and frequency.
      • Frequency is now displayed in orange when there is no PLL-lock with network.
      • For US English language the phasor is now rotated 90 degrees clockwise.

      Changes in 1.19 version (2017.01.30):

      • Fixed bug when recording was not automatically resumed in some situations.
      • Fixed bug with false detection of E996 critical error.

      Changes in 1.18 version (2016.12.21):

      • Fixed bug with no measurement data for recordings according to GOST 32144 standard.

      Changes in 1.17 version (2016.10.25):

      • Added support for independent recording regardless of standard (dual recording).
      • Added support for grouping polyphase voltage events (interruption, dip, swell).
      • Added recording of 4-quadrant tan(phi) for reports according to Polish Regulation.
      • Added sign to the total reactive (nonactive) power in the 3-phase 3-wire systems (based on voltage and current phasors).
      • Added the possibility to set the analyzer's date/time when incorrect date is detected at startup.
      • Added GSM modem version and IMEI reporting to the LOG file.
      • Improvement of flagging for Pst and Plt flicker.
      • Improvements to GSM modem operation.
      • Shortened time of formatting the memory card.
      • Unified colors of the phasors plot and the rest of the interface.
      • Other minor tweaks and fixes.

      Changes in 1.16 version:

      • Fixed bug with incorrect data flags when averaging period of 15-minute or longer was selected.

      Changes in 1.15 version:

      • Fixed error causing random malfunction of analyzer.
      • Added analyzer over-temperature protection.
      • Added new entries in the LOG file: changes in the state of analyzer's power supply, enabling and disabling communication channels.

      Changes in 1.14 version:

      • Added protection measures against data corruption, that could occur in some configurations when downloading data during recording (especially via GSM and Wi-Fi).
      • Fixed a rare bug in aggregation algorithm (intervals overlapping).
      • Stability improvements.
      • Fixed bug causing disconnection when trying to download data during recording via OR-1 transceiver.
      • Fixed bug with recording incorrect values of minimum, maximum and average of angles between voltage and current harmonics.
      • Fixed bug with reversed phase of C-4 current clamps.
      • Setting an Un-pe voltage event threshold to zero disables detection of this event.
      • Information about IP number of client connecting remotely with analyzer via GSM is added in the LOG file.
      • Fixed bug with sending SMS after changing analyzer language.
      • Added info in the LOG file about reversed phase of clamps.

      Changes in 1.12 version:

      • Added support of polyphase events for voltages.
      • Information about IP number of client connecting via GSM is added in the LOG file.

      Changes in 1.11 version:

      • Fixed bug with calculation of U23 phase-to-phase voltage.
      • Fixed bug with recording min. and max. values of voltage and current in 200 ms averaging mode.
      • Increased max. recording time for RMS1/2 plots to 30 seconds.
      • Added functionality: mains signalling measurement.
      • Added functionality: current limiting.
      • Fixed bug of sending SMS to numbers without country code.


      Changes in 1.07 version:

      • Fixed rare bug when offset correction routines worked incorrectly.
      • Fixed bug when bad data was reported while reading data for analysis, when waveforms and RMS1/2 plots were recorded while recording was stopped.
      • Fixed bug with possibillity of increased discharge rate of the battery when switched off.
      • Added support for chinese traditional and simplified languages.
      • Added national languages SMS support (russian i chinese).

      Changes in 1.06 version:

      • Fixed bug with error E283.
      • Improved timestamps accuracy.
      • Channel Unpe event are now not taken into account for IEC 61000-4-30 data flagging.
      • Fixed bug when data read in mass storage mode failed, when analyzer PIN was changed and recording was not started at least once.
      • Changed method of calculation of hysteresis for Unpe events. Previously hysteresis was calculated as a percent of nominal voltage. From now on, the hysteresis is calculated as a percent of threshold, but not lower than 50mV (referred to analyzer input).
      • Fixed display refresh on screen 1/9 with russian language selected.

      Changes in 1.04 version:

      • Fixed issues with wrong timestamps in GPS time synchronization, which lead to data import errors.
      • Fixed bug when analyzer hangs up after detecting internal error.
      • Fixed bug with possibility of amplitude clamping of recorded RMS1/2 voltages and currents when "Averaging period" was set to "Half-period". RMS1/2 values were clamped to the 10/12-cycle value of the highest amplitude channel.
      • Improved signal processing routines for flexible clamps.
      • Stability improvements.

      Changes in 1.03 version:

      • Fixed bug with incorrect minimum i maximum voltage and current values, when Min/Max calculation period was set to 1s, 3s or 5s.

      • Fixed rare bug in which analyzer detected internal error and displayed Exxx message (where xxx is error number) and restarted itself.

      • Fixed rare bug where analyzer was restarting during memory formatting.

      • Fixed bug where record was not flagged when voltage event was in progress at the beginning of the aggregation period (records were flagged only when event started during aggregation period).

      • Improvements in displacement detection algorithm in anti-theft mode.

      • Fixed bug where first incorrect Pst and Plt flicker values in Live mode and analyzer display were displayed after turning analyzer on, changing measurement point or after starting recording.

      • Increased data transfer rate via GSM.

      • Fixes in GSM communication.

      • SMS alert about analyzer displacement in anti-theft mode is now sent when the displacement distance is 100 meters or more (previous 50m).

      • Analyzer now sends SMS every 10 minutes in anti-theft mode when analyzer displacement has been detected, with current GPS position coordinates.

      • When current measurement is disabled nominal current of 0.000A on screen 9/9 is no longer displayed.

      • Corrected typo in current THD on screen 5/9 when russian language is selected.

      • Analyzer no longer emits short beep when trying to connect with it, when in off state in anti-theft mode.

      • Fixed bug where exiting mass storage mode failed when device was enumerated as Full-speed device.

      • Added option in measurement point configuration to calculate neutral channel current (without using clamps). In that case "In*" and "THDIn*" is displayed (asterisk is added).

      • When data is read from measurement point in which recording is in progress, all recorded data is now downloaded.

      • Added functionality to status bar: date and time is now displayed in green color when the requirements of IEC 61000-4-30 regarding clock accuracy for class A are fulfilled.

      • Added flag to aggegated data indicating interruption event (used for discarding data when generating measurement report).

      • GSM status no longer shows "PC connected" for short period of time when no connection is made.

      • GSM modem is now restarted when any change in modem configuration is made.

      • Added GPS signal strength indicator on screen 8/9 (GPS status).

      • Added information about GPS position fix ("2D"), and/or time fix (clock icon) on screen 8/9 (GPS status).

      • Added new SMS message in anti-theft mode, when GPS signal is lost, and when it is back.

      • Fixed bug where no data was recorded when the only parameter selected for recording was average phase-to-phase voltage (in split-phase and 3-phase wye systems).


      Firmware update in Sonel Analysis 4

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