Technical details

Item no.: 1401625
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Janitza UMG 20CM Front

Data at a glance

Supply voltage AC

Supply voltage DC

Harmonics V / A

1st – 63rd

Active energy class

1

Digital / Pulse output

2

Memory size

768 KB

Interfaces

  • RS485

Protocols

  • Modbus RTU

Functions and features

RCM and energy measurement device in one

  • 20 current measuring channels
  • 4 voltage measurement channels
  • Internal RS485 interface (Modbus as slave)
  • 20 LEDs – one LED for each current channel (green = OK, yellow = warning, red = rated current is exceeded)
  • Measuring range with load up to 63 A with closed or separable current transformers (standard measured values: V, A, kW, kVA, kVar, kWh)

The system for smart minds

  • Compactness of the system
  • Can be retrofitted into existing systems
  • Modbus RTU directly on board
  • Status display per channel (LEDs)
  • Name stored in measurement device per channel
  • Wide-range power supply (90 - 264V AC / 120 - 240V DC)
  • Integration into GridVis® software
  • Various transformer types for individual applications
  • Measurement variants:
    • Three-phase and single-phase energy measurement
    • RCM measurement with single and three-phase systems
  • High sampling rate 20,000 Hz
  • Transformer connection check (i.e. line breakage is detected)
  • Harmonics analysis to the 63rd harmonic via the analysis channel
  • Stores minimum and maximum values with timestamp
  • Standard measured values: V, A, kW, kVA, kVar, kWh (variables list)
  • Scalability of the system

Power supply without drop-outs

  • Permanent monitoring and logging of processes in TN-S or TN-C-S systems
  • Simple parameterisation and operation of the RCM measurement
  • Automatic reporting in the event of problems enables a rapid initiation of countermeasures
  • Comprehensive diagnostics increase safety and efficiency of a company

Alarms before failures (preventative residual current analysis)

  • Faults arising will be detected in good time
  • Monitoring, evaluation and reporting of creeping increases in residual currents (e.g. triggered by insulation faults and operating currents for system parts or loads being too high)
  • Reduction of downtimes

Sensors for energy management

  • Energy data of a large number of loads can be acquired and passed to a database with ease
  • Automatic reading out and saving of the measured values and data saved in the measurement devices as well as the exceedance of parameterised threshold values
  • Channel-specific measured values of the current monitoring devices can be displayed via the GridVis® software
  • The evaluation and saving of data in central databases is implemented via the GridVis® software
  • The greater the scope of information, the more accurate the determination of savings potentials
  • Energy optimisation offers a higher, more economical savings potential (ISO 50001)

Your benefits - The intelligent system solution

  • Early warning with system failures
  • Avoidance of costly and hazardous system downtimes; the availability of systems is increased
  • Localisation of individual faulty feeders, reduced work when troubleshooting
  • Early detection of an overloading of the N conductor and critical residual currents, resulting in increased fire safety
  • Through parameterisation of the system in new condition and constant monitoring, all changes to the system state after the point of commissioning can be detected
  • Fulfilment of the safety criteria "RCM residual current monitoring" in data centres
  • Convenient monitoring and parameterisation solution with GridVis® software
  • Operating current acquisition of all relevant consumers as a basis for an energy management system (EnMS)