With the growing implementation of energy saving devices based on power electronics and the integration of renewable energy production, the SLM21S is a perfect solution to continuously monitor the energy consumption and the power quality of the networks. Centrally in the main cabinet and on any location in the building without the high costs of new cabling.

Power made visible

  • 3 phases balance with and without neutral
  • 3 phases unbalance with and without neutral• 2 phase, single phase 
  • Active and reactive power measurements 
  • Imported and exported active energy 
  • Lines voltage measurement 
  • Lines current measurement 
  • Neutral current 
  • Total Voltage Harmonics distortion 
  • Total Current Harmonics distortion 
  • Communication with SLM on RS485 

The SLM21S unit will give you valuable information in terms of efficiency, power quality and savings. You will be able to optimise your load and electrical grid, to identify efficiency opportunities (i.e. filtering high harmonic content) or drive energy savings. While the unit is typically installed at the main electrical distribution cabinet, it can be easily combined with other pulse energy meters to view a single application and to understand the power quality and power usage of your entire campus in relation to other parameters such as environmental or people activities.

Flexible and modular system is easily extensible
The SLM System is not limited to measuring only. You can also manage your building according to preset scenarios. Expansion is easy and fast because the SLM System makes use of the existing infrastructure and standard components (4-20mA digital, dali, 1-10V analog, RS-485, Modbus).


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