- Description
Power quality analyzer PQM- 703 is a technically advanced product that allows for comprehensive measurements of the quality of electricity , analysis and recording of power network parameters, for frequencies 50/60 Hz in accordance with European standard EN 50160. PQM -703 is another representative of a well, known family of analyzers line PQM- 70x . In relation to the PQM -702 has new functions like recording of transients with max. sampling frequency 10 MHz (rapid changes in voltage) and control signals. Minimal transient capturing time is 650 ns. It is intended for a very wide range of users who need to control the quality of power with a mobile device , which fulfills the requirements of a multi-sheet standard IEC 61000 for class A analyzers. This applies to measurement accuracy, measurement methods, and synchronization of time with a standard signal. The last condition is met with a built-in GPS module with an internal antenna. If the analyzer is installed inside, it is possible to use an additional antenna with a 10m-long wire. If the antenna is situated outside, GPS signal will be attainable without any problems and used for the synchronization of an internal clock.
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:
- one-phase,
- split-phase with N wire,
- three-phase Wye type, with and without N wire,
- three-phase delta type,
- DC voltage.
Thanks to these features PQM -703 can be used in power engineering and maintenance services fields for industrial plants , as well as by persons providing services in the power network analysis field.
Reliable class A measurements
Features
- Power from the measured network.
- Designed for use in virtually all network types from 64 V to 760 V directly, with particular emphasis on measurements at low voltage poles, due to the ease of installation.
- Independent power supply makes it particularly suitable for measurements behind voltage transformers. It can also be used for measurements in DC voltage systems.
- Remote configuration and data transfer in real time using the built-in GSM modem.
- Anti-theft function – text message notification in case of position change – built-in GPS receiver.
- Real time clock synchronized using GPS protocol.
Measured parameters
- Voltages L1, L2, L3, N, PE (five measurement inputs) – average, minimum, maximum and instant values within the range up to 1000 V, interoperability with voltage transducers.
- Currents L1, L2, L3, N (four measurement inputs) – average, minimum, maximum and instant values, current measurement within the range up to 6 kA (depending on applied current clamp), interoperability with current transducers.
- Crest factors for current (CFI) and voltage (CFU).
- Frequency within the range of 40 Hz – 70 Hz.
- Active power (P), reactive power (Q), distortion power (D), apparent power (S) with identification of the nature of reactive power (capacitive, inductive).
- Calculation of reactive power using the Budeanu method and IEEE 1459 method.
- Active energy (EP), reactive energy (EQ), apparent energy (ES).
- Power factor (PF), cosφ, tanφ.
- K factor (transformer overload caused by the harmonics).
- Harmonics up to the 50th in voltage and current.
- Interharmonics measured as groups.
- Total harmonic distortion THD for current and voltage.
- Short-term (PST) and long-term (PLT) light flicker index.
- Unbalance of voltages (in compliance with IEC 61000-4-30 class A) and currents.
- Event logging along with oscillograms.
Wide range of mains to analyze
- With rated frequency 50/60 Hz
- With rated voltages: 64/110 V;110/190 V; 115/200 V; 120/208 V; 127/220 V; 133/230 V; 220/380 V; 230/400 V; 240/415 V; 254/440 V; 265/460 V; 277/480 V; 290/500 V; 400/690 V; 480/830 V (for systems with N conductor)
- Direct current
- Systems:
- single-phase
- split-phase with common N
- three-phase – WYE with and without N conductor
- three-phase – Delta
- three-phase – WYE and Delta Aron
- with current and voltage transducers
Capabilities
As a standard, the analyzer is equipped with an 8 GB memory card, which allows you to collect over 4500 parameters simultaneously – at intervals of up to 200 ms. In addition to checking the power quality according to standards and ordinances, it allows you to create a detailed situation picture in terms of operation and possible disturbance. However,nothing stands in the way to make this image even clearer – the manufacturer can expand the memory to 32 GB (optional).
PQM-703 records control signals in power networks. In addition, the PQM-703 model is equipped with a transient recorder with voltage range up to ±8000 V and a maximum sampling frequency of 10 MHz.
The built-in GPS receiver ensures real time clock accuracy, and the integrated GSM modem facilitates remote analyzer operation.
Displaying data
The colorful, backlit 3.5” LCD screen with a resolution of 320 x 240 pixels presents basic parameters of the tested network, such as voltage, current and power – everything in a clear and transparent way. Information about the device configuration as well as messages and warnings about the operation status or emergency conditions are available. In addition, the user can check the phasor diagram to check the network connection.
The analyzer can be remotely controlled. The user can set up the meter, check measured parameters in real time and download registered data. The remote connection is made using the built-in GSM modem.
GSM transmission gives an incomparably greater range: after inserting any SIM card with a static IP number into the analyzer, you can access it from anywhere in the world.
Application
The analyzers are addressed to users who need to control power quality using a mobile device that meets the requirements of the IEC 61000 class A standard for analyzers. PQM-703 fully satisfies the functional needs of power quality analysis and interference diagnostics in power networks. It is used in the field of professional energy and maintenance services in industrial plants, as well as among independent power quality specialists.
SONEL ANALYSIS
Sonel Analysis software – application delivered as standard accessory, indispensable for working with PQM-series analyzers. It enables:
- analyzer configuration,
- data reading from logger,
- preview of network parameters in real time (with capability of reading via GSM modem),
- deletion of data in the analyzer,
- data presentation in tables,
- data presentation in charts,
- data analysis in compliance with standard EN 50160 (reports) and other user defined reference conditions,
- independent support of multiple analyzers,
- analyzer firmware updates. The software enables readout of selected parameters and their visualization in real time.
These parameters are measured independently from the registration saved on the memory card. The user can view:
- charts of voltage and current progression (oscilloscope),
- charts of voltage and current over time,
- phasor diagram,
- measurements of multiple parameters,
- harmonics and harmonic powers,
- interharmonics.
- Technical specification
Parameters
Parameter Measuring range Max. resolution Accuracy Alternating voltage (TRMS) - 0,0…1000,0 V or 0.0…760.0 V* 4 significant digits ±0.1% Unom Crest Factor Voltage 1.00…10.00 (≤1.65 for 690 V voltage 0.01 ±5% Crest Factor Current 1.00…10.00 (≤3.6 dla Inom) 0.01 ±5% Alternating current (TRMS) - depending on clamp** 4 significant digits ±0.1% Inom (error does not account for clamp error) Frequency - 40.00...70.00 Hz 0.01 Hz ±0.01 Hz Active, reactive, apparent and distortion power - depending on configuration (transducers, clamps) 4 significant digits depending on configuration (transducers, clamps) Active, reactive and apparent energy - depending on configuration (transducers, clamps) 4 significant digits as power error cosφ and power factor (PF) - -1.00...1.00 0.01 ±0.03 tgφ - -10.00...10.00 0.01 depends on error of active and reactive power Harmonics and interharmonics Voltage DC, 1...50 as for alternating voltage True RMS ±0.05% Unom for m.v. < 1% Unom
±5% m.v. for m.v. ≥ 1% UnomHarmonics and interharmonics Current DC, 1...50 as for alternating current True RMS ±0.15% Inom for m.v. < 3% Inom
±5% m.v. for m.v. ≥ 3% InomTHD Voltage and current 0.0..100.0% (relative to RMS value) 0.1% ±5% Active and reactive power of harmonics - depending on configuration (transducers, clamps) epends on minimum current and voltage values - Angle between current and voltage harmonics - -180.0…+180.0° 0.1° ±(n x 1°) K-Factor - 1.0...50.0 0.1 ±10% Flicker index - 0.20...10.00 0.01 ±5% Unbalance factor Voltage and current 0.0...20.0% 0.1% ±0.15% (absolute error) Measurement of control signals Voltage up to 15% Unom at 5.00...3000.00 Hz 4 significant digits unspecified for <1% Unom
±0.15% for 1...3% Unom
±5% for 3...15% UnomMeasurement of transients Voltage ±8000 V 4 significant digits ±(5% + 25 V) m.v. – measured value
* Depending on analyzer version
**
- F-1A1, F-2A1, F-3A1 clamp: 0...1500 A AC (5000 Ap-p)
- F-1A, F-2A, F-3A clamp: 0...3000 A AC (10 000 Ap-p)
- F-1A6, F-2A6, F-3A6 clamp: 0...6000 A AC (20 000 Ap-p)
- C-4A clamp: 0...1000 A AC (3600 Ap-p)
- C-5A clamp: 0...1000 A AC / 0...1400 A DC (3600 Ap-p)
- C-6A clamp: 0...12 A AC (36 Ap-p)
- C-7A clamp: 0...100 A AC (360 Ap-p)
- Standard accessories
- Optional accessories
- Files
