Catalog index: WMGBPQM711

Power quality analyzer



Req quote

PQM-711 power quality analyzer is an advanced product for wide type of measurements, analysis and recording of network parameters 50/60 Hz and the power quality diagnostic according to European standard EN 50160. PQM-711 is an innovative model with a wireless communication Wi-Fi , which allows for automatic pairing with the included tablet, with a large 10″ touch screen. Tablet allows full operating of the analyzer, live data preview and the reading and analysis of data stored in the internal memory. With this solution, the PQM-711 is an unique device that combines the advantages of the analyzer with built-in display and typical portable analyzers (known as Black Boxes).With  the tablet you can very fast checked the device under test. On the other hand, you can leave the analyzer module for multi-measurements as a typical logger without display. You can very fast diagnose the machine under test using the tablet. On the other hand, you can leave the analyzer module itself for many days measurement as a typical logger without display. PQM-711 has a transient registration with a maximum sampling rate of 10 MHz (rapid changes in voltage) and control signals. The minimum duration of the  registered transient is 650 ns.

Analyzer is addressed to a wide range of users who need to control the power quality with a mobile device, it meets the IEC 61000 standards for the Class A. Compliance with the standard includes measurement uncertainty, measurement methods and time synchronization with a reference signal. In case of using analyzer indoor with poor GPS signal additional antenna with 10 meters cable can be used. After placing antenna outside the GPS signal will be easily traced and used for internal clock synchronization.

In practice, the analyzer may be used with all network types with rated voltage from 110 V to 760 V, directly or indirectly via transducers. It works in the following networks:

  • It works in the following networks:
  • one-phase,
  • split-phase with N wire,
  • three-phase Wye type, with and without N wire,
  • three-phase delta type,
  • with constant voltage.

Thanks to these features PQM-711 can be used in power industry and industrial maintenance services, as well as in companies leading network analysis services.

Possible measurements:

  • Measurements according to EN 50160
  • Voltage L1, L2, L3, N-PE
    – average, minimum, maximum and instantaneous values, range to 760V, 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 40Hz to 70Hz ,
  • 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.
  • Mains signalling up to 3000 Hz.
  • Transients up to ±6000 V, max 10 MHz, minimal transient capturing time is 650 ns.
  • All parameters meet Class A acc. IEC 61000-4-30 standard.

 The device is designed to work with networks:

  • with nominal frequency 50/60Hz,
  • 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


0,0…760,0 V 0,01 % Un ±0,1% Un
Voltage 1,00…10,00
(≤1,65 for
voltage 690 V)
0,01 ±5%
Current 1,00…10,00
(≤3,6 Inom)
0,01 ± 5% m.v.
depends on
the clamp*
0,01 % of nominal range ±0,1% of nominal
(add clamps
Frequency 40,00…70,00 Hz 0,01Hz ±0,01 Hz
of configuration
up to 4
decimal places
on configuration
Active, reactive apparent energy depends
of configuration
up to 4
decimal places
the same
as above
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
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
Voltage 0,0..100,0% 0,1% ±5%
Current ±5%
depends on configuration
on current
and voltage
minimum value

and current

-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)
Mains signalling Voltage 5…3000 Hz 0,01 Hz ±0,15% Uh for 1…3% Uh ,5% Un for 3…15% Uh
(max. 10 MHz)
±6000 V 5 V ±(5% + 25 V)

*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 )

Data Sheet                                      

User Manual                                   

Declarations of conformity          

PSLab 61000-4-30 Class A certificate     

User Manual – Sonel Analysis        

Firmware for PQM-710/711