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  • Portable Rogowski multifunction energy and power analyzer | with data logging | 5VDC / 2900mAh battery | THD | SD card | ME440

    Code: EME440

    Portable (handheld) multifunction power and energy analyzer designed for comprehensive analysis of electrical networks, loads, and power quality under real operating conditions. The device supports Rogowski coils, 333 mV CT sensors, and current clamps, enabling safe and accurate measurement of very high currents up to 6000 A without interrupting electrical circuits. An integrated 29,000 mAh lithium battery, internal 32 GB memory, harmonic analysis up to the 51st order (THD), and even Modbus TCP communication in a portable device make the ME440 a unique tool for energy audits, fault diagnostics, commissioning, and advanced on-site monitoring. 

  • Portable Rogowski multifunction power and energy analyzer – up to 6000A, THD, 32 GB memory, Modbus TCP, 2900 mAh battery

    Portable multifunction power and energy analyzer designed for detailed analysis of electrical networks, loads, energy consumption and power quality under real operating conditions. The device supports Rogowski coils, 333 mV CT transformers and current clamps, allowing safe measurement of high currents up to 6000A without interrupting electrical circuits. The integrated battery, 32 GB memory, harmonic analysis up to the 51st harmonic and Modbus TCP communication make the analyzer suitable for energy audits, fault diagnostics, commissioning and adjustment work.

    Main idea:
    This device is designed for mobile and professional analysis of electrical parameters on site when voltage, current, power, energy, power factor, harmonics, phase balance and other network parameters need to be measured without dismantling the existing installation and without stopping the work process.
    Maximum current
    Up to 6000A
    Data memory
    32 GB
    Harmonics
    Up to 51st / THD
    Communication
    Modbus TCP

    Operating principle

    The analyzer is connected to the electrical network being tested using voltage clips and a selected current sensor – a Rogowski coil, 333 mV CT transformer or current clamp. The device monitors current, voltage, active and reactive power, energy consumption, frequency, power factor, phase angles and other parameters in real time.

    Measurement data can be recorded in the integrated memory and later transferred to a computer via USB. The Modbus TCP interface allows the analyzer to be used together with BMS, SCADA or other advanced building and industrial automation systems.

    Why is Rogowski coil support useful?
    Rogowski coils allow large currents to be measured conveniently and safely without dismantling conductors and without interrupting the electrical circuit. This is especially relevant when working with high-power incoming feeders, transformers, distribution boards, busbars and production loads.

    Technical parameters

    Product type Portable multifunction power and energy analyzer
    Operating mode Mobile / portable
    Power supply Integrated 2900 mAh lithium battery or 5V DC
    Data storage Internal 32 GB memory
    Data reading Via USB connection
    Communication Modbus TCP
    Harmonic analysis Up to the 51st harmonic, THD analysis
    Supported current sensors Rogowski coils, 333 mV CT transformers, current clamps
    Configurable current ranges 600A / 3000A / 6000A
    Recommended Rogowski coil for 600A range MRC-36
    Recommended Rogowski coil for 3000A range NRC-150
    Recommended Rogowski coil for 6000A range NRC-200
    Current clamps ST08 – 10A / 100 mA / 10A; ST08 – 10A / 320 mV
    Voltage measurement Direct or via VT transformer – up to 500 kV
    Recorded parameters Current, voltage, active and reactive power, electrical energy, power factor cos φ, Demand load, harmonic spectrum, phase angle, phase balance, frequency, maximum and minimum values
    Included accessories 5 pcs. voltage clips, power / communication adapter

    Main functions

    • Voltage and current measurement – real-time monitoring of electrical network parameters.
    • Power and energy metering – calculation of active power, reactive power and energy consumption.
    • Harmonic analysis – THD and harmonic spectrum evaluation up to the 51st harmonic.
    • Power factor analysis – evaluation of cos φ and load efficiency.
    • Frequency monitoring – network frequency control under real operating conditions.
    • Phase balance evaluation – detection of phase loads and voltage imbalance.
    • Data logging – accumulation of measurement data in the internal 32 GB memory.
    • Data export via USB – simpler measurement analysis on a computer.
    • Modbus TCP – integration with BMS, SCADA or other automation systems.
    • Autonomous operation – measurements are performed using the integrated battery.

    Where is it used?

    • In energy audits – for evaluating energy consumption, loads and power quality.
    • In manufacturing companies – for analyzing transformers, busbars, motors, compressors and production lines.
    • In commercial facilities – for monitoring electrical networks in offices, shopping centres, warehouses and technical rooms.
    • In electrical distribution boards – for diagnostics of current, voltage, phase balance and harmonics.
    • In solar power plants – for analyzing inverters, network parameters and loads.
    • In generator and UPS systems – for evaluating power quality, frequency and load.
    • In commissioning and adjustment work – for testing new electrical systems and checking parameters.

    Practical usage example

    For example, when performing an energy audit of a production line, Rogowski coils are placed around the main phase conductors, and the voltage clips are connected to the measured network. The analyzer records current, voltage, active and reactive power, energy consumption, harmonics and power factor.

    The collected data is saved in the internal memory and transferred via USB to a computer for further analysis. This makes it possible to identify overloads, uneven phase loading, high harmonic distortion, inefficient energy use or possible electrical equipment faults.

    Use according to needs

    For an engineer / energy specialist: suitable for energy and power quality audits, harmonic distortion analysis, phase imbalance evaluation, identifying fault causes and long-term parameter logging.

    For industrial and commercial facility specialists: allows periodic equipment checks, monitoring transformers, lines and loads, evaluating energy consumption and identifying possible network quality disturbances.

    For an electrician: a practical tool for quick on-site diagnostics, load checking, electrical cabinet measurements, commissioning and testing work.

    For a designer and automation specialist: Modbus TCP communication allows the analyzer to be integrated into BMS, SCADA or other energy monitoring infrastructure.

    Advantages

    • Portable and autonomous operation – can be used on site without a permanent power supply.
    • 2900 mAh lithium battery – convenient for mobile measurement tasks.
    • 32 GB internal memory – suitable for longer data logging.
    • Harmonic analysis up to the 51st harmonic – for power quality evaluation and THD monitoring.
    • Rogowski coil support up to 6000A – for high-current measurement without disconnecting the circuit.
    • Supports several current sensor types – Rogowski coils, 333 mV CTs and current clamps.
    • Modbus TCP communication – for integration into BMS, SCADA and energy monitoring systems.
    • USB data export – for more convenient result analysis on a computer.
    • Solution adapted for professional use – for audits, diagnostics, commissioning and adjustment.

    Disadvantages / limitations

    • Rogowski coils and current clamps are not included in the basic kit – they are selected according to the specific current range and cable diameter.
    • Designed for technical users – electrical engineering knowledge is required to properly interpret harmonics, power factor and phase balance.
    • No wired RS485 interface – the main integration is carried out via Modbus TCP.
    • For high-voltage measurement via VT, properly selected voltage transformers and safe connection are required.
    • Measurement accuracy depends on the selected sensors – suitable Rogowski coils, CT transformers or clamps must be used.

    Safety and usage notes

    This device is intended for professional electrical measurement. When working with live electrical networks, especially industrial panels, high currents or high-voltage systems, all electrical safety requirements must be followed.

    • Measurements must be carried out by a qualified electrical specialist.
    • Before connecting voltage clips, the network voltage and measurement safety must be evaluated.
    • Rogowski coils, CT transformers and current clamps must be selected according to the expected current.
    • The measurement limits of the selected current sensor and analyzer must not be exceeded.
    • For voltage measurement up to 500 kV, suitable VT transformers and a safe measurement circuit must be used.
    • Before performing data analysis, the phase connection sequence must be checked so that power and energy calculations are correct.
    • The device and sensors must be protected from mechanical damage, moisture and improper storage.

    Quick selection guide

    Choose the portable Rogowski power and energy analyzer when a mobile device is needed for professional evaluation of electrical networks, loads, energy consumption and power quality. It is especially suitable for measuring high currents using Rogowski coils up to 6000A.

    Current ranges
    600A / 3000A / 6000A
    Memory
    32 GB
    Harmonics
    Up to 51st / THD
    Communication
    Modbus TCP
    Suitable when you need to:
    • perform an energy and power quality audit;
    • measure high currents without interrupting the electrical circuit;
    • evaluate harmonics, THD and phase imbalance;
    • record electrical parameters over a longer period;
    • transfer data via USB or integrate into a Modbus TCP system;
    • quickly diagnose loads, motors, transformers or electrical panels on site.
    Check before ordering:
    • which current range is required – 600A, 3000A or 6000A;
    • which Rogowski coils, CT transformers or current clamps are required for the specific site;
    • whether direct voltage measurement or measurement via VT is required;
    • whether integration with BMS, SCADA or a Modbus TCP network is required;
    • whether additional measurement equipment and protective accessories are required.
    Important reminder:
    The analyzer kit includes voltage clips and a power / communication adapter, but Rogowski coils, CT transformers and current clamps must be selected additionally according to the specific measurement conditions, current and conductor diameter.

    FAQ – frequently asked questions

    Can the analyzer measure up to 6000A?
    Yes, when a properly selected Rogowski coil is used and the 6000A rated measurement range is selected.
    Are Rogowski coils included in the kit?
    No. The basic kit includes voltage clips and a power / communication adapter. Rogowski coils, CT transformers or current clamps are selected separately according to the required current range.
    What can be recorded in the internal memory?
    Current, voltage, active and reactive power, energy, power factor, harmonics, frequency, phase balance, maximum and minimum values and other measurement parameters can be recorded.
    What do THD and harmonic analysis mean?
    THD shows the total harmonic distortion in the electrical network. Harmonic analysis helps evaluate network quality, the influence of loads and possible sources of disturbances.
    Can the data be transferred to a computer?
    Yes. Measurement data can be read via USB connection and further analyzed on a computer.
    Is the analyzer suitable for BMS or SCADA systems?
    Yes, the device has Modbus TCP communication, so it can be integrated into compatible building management, automation or energy monitoring systems.

    Professional portable energy and power analyzer for high currents

    The portable multifunction Rogowski power and energy analyzer is a universal tool for energy audits, fault diagnostics, power quality evaluation, commissioning and adjustment work, and long-term parameter logging on site.

    Thanks to support for Rogowski coils up to 6000A, 32 GB memory, THD and harmonic analysis up to the 51st harmonic, 2900 mAh battery, USB data export and Modbus TCP communication, this analyzer is suitable for engineers, energy specialists, electricians, industrial companies and advanced electrical monitoring projects.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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