APQM-702/APQM-703 Power Quality Analyzers

Reliable class A measurements

Features

• It can be powered from the L phase.
• It is intended for use in virtually all types of networks from 64 V to 760 V directly, with special consideration for measurements on low-voltage poles, due to its ease of connection.
• It has an independent power supply and is therefore particularly suitable for measurements outside of voltage transformers. It can also be adapted for measurements on DC voltage systems.
• Real-time remote configuration and data transfer (GPRS) using a built-in GSM modem
• Anti-theft function: SMS notification in case of change of position - built-in GPS receiver
• Real-time synchronized clock using GPS protocol.

Measured parameters

• Voltages L1, L2, L3 N, PE (five measuring inputs) - average, minimum, maximum and instantaneous values, range up to 1000 V, possibility to work with voltage transformers.
• Currents L1, L2, L3, N (four measuring inputs) - average, minimum, maximum and instantaneous values, current measurement with range up to 6 kA (depending on the clamp used), possibility to work with current transformers.
• Peak factor for current (CFI) and voltage (CFU).
• Frequency in the range of 40 Hz to 70 Hz
• Active (P), reactive (Q), distortion (D) and apparent (S) power, and determination of the character of the reactive power (capacitive, inductive).
• Power logging: Budeanu and IEEE 1459 method
• Active (EP,) reactive (EQ) and apparent (ES) energy.
• Power Factor, cosφ, tgφ
• K-factor (transformer overload caused by harmonics)
• Harmonics up to 50 in voltage and current.
• Interharmonics measured as groups.
• Total THD harmonic distortion for voltage and current.
• Short term flicker severity rating (PST) and long term flicker severity rating (PLT).
• Voltage (IEC 61000-4-30 class A) and current asymmetry
• Event detection including waveform recording.

Wide range of networks for analysis

• With nominal frequency of 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
• Direct current

System:

• Single-phase
• Phase split with one neutral conductor
• Three-phase - STAR with and without neutral wire
• Three-phase - DELTA
• Three-phase - ESTRELLA and DELTA Aron
• With voltage and current transducers

Capacities

As standard, the analyzers are equipped with an 8 GB memory card, which allows you to collect more than 4500 parameters simultaneously, at intervals of up to 200 ms. In addition to verifying power quality according to standards and regulations, it allows you to create a detailed picture of the situation in terms of operation and possible disturbances. However, nothing stands in the way of making this picture even clearer: the manufacturer can extend the memory up to 32 GB (optional).

The PQM-702 and PQM-703 record control signals in electrical networks. Additionally, model PQM-703 is equipped with a voltage transient recorder, with a 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. In addition, the PQM 702T allows you to measure the outside temperature.

Sample data

The colourful 3.5" LCD display 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 operating status or emergency conditions are available. In addition, the user can check the phase diagram to verify the network connection.

The analyzers can be controlled remotely. The user can configure the meter, verify measured parameters in real time and download recorded data. For the remote control The connection is made in two ways: using the OR-1 radio receiver or using the built-in GSM modem.

The OR-1 radio transmission operates at a distance of up to 50 m. GSM transmission offers an incomparably greater range: after inserting any SIM card with a static IP number into the analyzer, it can be accessed from anywhere in the world.

Applications

The analyzers are intended for users who need to monitor power quality using a mobile device that meets the requirements of the IEC 61000 class A standard for analyzers. The PQM-702 (T) and PQM-703 fully satisfy the functional needs for power quality analysis and interference diagnosis in power networks. They are used in the field of professional power and maintenance services in industrial plants as well as by independent power quality specialists.