Universal compact power meters combine accurate 3-phase energy and power measurement with data logging, power quality analysis. Includes also advanced programmable alarms and general input/output capabilities.

Compact universal PQ analyzers SMV and SMVQ are similar to the SMP resp. SMPQ instruments with the only difference being its bright segment LED display. Large internal memory allows continual measurement and datalogging of all important parameters for a relatively long time. An important part of this compact platform is an embedded four-quadrant electricity meter with automated meter reading archive. SMV and SMPQ meters are a class S power monitoring device according to the international standard IEC 61000-4-30 ed. 2. SMVQ additionally evaluates and archives all required power quality and distrubance data according to EN 50160 standard.

These instruments offer a wide variety of input-output and communication options. By default every device has a front panel USB connector. Secondary RS485 or Ethernet can be ordered. In more complex applications the outputs can be programmed to relay or pulse outputs of various quantities. A temperature or another analog quantity can be measured from its external analog input.


  1. Specifications
  3. Ordering / Accessories
  4. Software
  5. Extensions

Basic features

  • evaluation of electrical parameters in energy distribution systems or electrical installations
  • in compliance with IEC EN 61000-4-30 class S
  • fast and continuous measurement cycle (10 periods/~200 ms, gap-less)
  • selection of aggregation intervals from 200 ms second up to 2 hours
  • active and reactive electricity meter according to EN 62053-21, EN 62053-23
  • data flagging concept that eliminates double evaluation of critical events
  • digital flicker meter (IEC 61000-4-15)
  • 63 harmonic and inter-harmonic components (IEC 61000-4-7), THD
  • Data Logging Capabilities

  • high capacity for recording of aggregated measurement values- 512 Mb memory
  • run-time device operation log
  • automated electricity meter readings at selected time intervals
  • One day profiles at selected date / at the day maximal demand day
  • event log to record dips, swells and short interruptions according to EN 61000-2-8
  • separate archives for power quality evaluations according to EN 50160 in SMPQ
  • Display Features

  • user friendly installation and configuration
  • displayed actual measured values of all available quantities
  • floating average values
  • day and week charts for voltage, currents, powers etc.
  • phasor, harmonic and inter-harmonic diagrams
  • information status bar - time and IO status, operational information...
  • configurable inputs and outputs, alarm LEDs
  • Communication Options and Data Acquisition

  • open and documented protocol with free data acquisition software
  • support for MODBUS RTU and TCP - simple integration with 3rd party SCADA software
  • embedded web server with Ethernet option for comfortable remote access to the device
  • local USB 2.0 fast communication port
  • optional remote communication - RS-485 serial or 10/100Mbit Ethernet
  • Sample SMP 44 connection schemas

    Wiring of a SMP analyzer in HV and LV network.

    Measurement of high voltage network with measuring CT & VT (left) and classical low voltage application with direct voltage and current measurement (right).

    Example orf connection of SMP 44 in LV network = various current transformer options.

    Examples of special current measurement options - split core external CT (left), wire through external CT (middle) and flexible current probes (right).

    Ordering sheet and options

    Upon order please use a combination of the following options to specify the exact configuration of requested item(s).

    Typy a provedení

    Optional Accessories

    X/5A: standard measuring current transformers with IN=5A resp. 1A

    CT with secondary nominal current 5A resp. 1AInstrument in this oprtion can be connected and configured to measure currents with any 1A/5A CT the customer might already have installed. This type of standard CT with 1A or 5A output is most common and supported with the regular type of instruments (default option). We also offer various split core measuring CTs with 5A secondary output as an optional accessories to our instruments. These are suitable for simple online installation of the measuring instruments and usually do not require disasembling of the measured appliance.

    Sxxx/Pxxx: CT Assortment for high ratio CT option of instruments

    Wire through CT with small nominal output current.This option of analyser is shipped with split core extrenal CTs (option Sxxx) or wire through external CTs (option Pxxx). These CTs have high transforming ratio and the secondary current is relatively low. Its biggest advantage is simpler instalation and handling when compared to the standard X/5A CTs. It can be used to measure directly currents of nominal value up to 600 AAC. Specific CTs are calibrated and ordered with each instrument.

    Bxxx Flexible Current Sensor (Rogowski CT)

    A3000 Flexible current sensor Bxxxx (Rogowski coil) is dedicated to measure broad range of AC currents in LV networks. These sensors are typically intended to be used with our portable instruments. Each sensor is equipped with an amplifier box and a range control switch. Nominal measured current is optional - 10 000, 3 000, 1000, 300 or 100 AAC.

    The B3000, B1000 and other Bxxx flexible current probes work with: power quality analyser SMV & SMVQ (option F), SMP & SMPQ (option F), compact portable SMP-BX and SMPQ-BX analysers and SMP-CA portable analyser and data logger.

    Ordering codes for B3000 and B1000 CTs.

    ENVIS application suite provides all features for basic instrument management (configuration, supervision, fw update). It also downloads and archives data from all the supported instruments. import/export, data analysis and advanced reporting of the records is also provided. ENVIS is available free of charge to be used with all our instruments.

    Typická instalace aplikace ENVIS

    ENVIS.Online system service can be used to implement complex power quality monitoring and/or energy efficienci control and monitoring systems. By using email,  SMS or SNMP all registered users and administrators can be warned upon exeptional situations, malfunction of supply or monitored instruments or it can be used to post periodical analysis/reports.

    Additional plugin modules can also add special features or customizations to booth ENVIS and ENVIS.Online in a modular manner. 

    Typical installation of ENVIS


    Optional firmware modules

    Voltage and power event cycle data logger module.
  • Ripple Control (Mains) Signals - RCS Module: for measurement, recording and analysis of a ripple control signal. Several formats of the telegram are also supported for decoding.
  • Voltage Events - VE Module: for recording and evaluation of voltage events (SMVQ & SMPQ does include this feature in its default configuration).
  • General Oscillograms - GO module: for detection and precise recording of various waveform distortions. This module records the so called oscillograms of voltages and currents in extended detail, capacity and trigger options into the flash memory.
  • Modbus Master - MM module: in supported instruments with memory it activates new option to record Modbus data from connected slave devices. It can work as a datalogger to NOVAR PFCs as well as to local sub-meters or other Modbus sensors.
  • See: other built-in meters and analysers, portable analysers and data loggers, ENVIS 1.1 for data analysis.