NEMO 332

Portable power quality analyser - 4 voltage inputs and 4-32 current inputs - nominal current rate can be selected in range 10-10 000A.

NEMO 332 is a portable multifunctional power meter and power analyser with datalogger functions. It is suitable for low, medium and high voltage networks (measured via voltage transformer). Its large internal memory can store months of typical measurements and also records disturbance data, log, electricity meter reading and other critically important information. It shares many features with its panel counter part SMPQ.

Typická sada příslušenství přístroje NEMO.

Its enclosure, interfaces and supply power options are optimized for simple installation of this portable datalogger in space constrained environments. NEMO family has a wide variant of communication options including wireless and mobile networks for simple contactless installation and supervision. 

  1. Specifications
  3. Ordering
  4. Software
  5. Firmware options

Properties and Characteristics

  • four voltage inputs for measurement, separated power supply input
  • up to 8x3 or 8x4 measured currents - supports the SPQ-I current probes
  • optional input for PT 100 temperature sensor
  • power quality data logger with 512 Mb internal memory capacity
  • power supply 85-480 Vac / 100-600 Vdc or over USB, internal accumulator
  • precise battery backed internal real time clock
  • 128 samples per period, voltages continuous, 4 currents continuous, 32 multiplexed
  • aggregation 200 ms or higher (user defined)
  • frequency, power (active, reactive, distortion), power factors etc.
  • measures power quality - 50 harmonic components, THD, flicker
  • evaluation according to EN 50160, IEC 6100-4-30 ed. 2, 61000-4-7, 61000-4-15
  • records power and voltage events (dips, sags, swells)
  • detailed event trends and oscillograms of the pre-defined events
  • USB port for configuration and fast data acquisition
  • optional WiFi, GPRS or UMTS (with GPS time sync) modules for remote access
  • ENVIS 1.1 supports all features of NEMO instruments

Typical wiring for two separate feeders

Typical use case for the NEMO 332 power quality data logger.

NEMO 332 ordering codes and accessories

Types and options of NEMO 332 analyser.

NEMO 332 supported current probes

Types and options of SPQI probes.

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 data loggersENVIS 1.1 for data analysis, built-in meters and analysers.