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The GSP274 enables the safe, reliable and automatic synchronization of generator units to the power supply grid. It also provides a number of monitoring functions for generator and grid protection. The circuit-breakers are tripped by the module directly via digital outputs and relays. Additional digital inputs enable the monitoring of the relevant switching state. 

The continuous monitoring of grid harmonics up to the 50th harmonic can be used for direct responses as well as for evaluating the power quality. The module is provided with an integrated realtime data recorder for the high-precision recording of up to 16 measuring channels during protective tripping or synchronization. Error events are recorded continuously and stored permanently with a high resolution time entry. The internal time base of the module can be synchronized to an external time source (e.g. IEEE 1588 Precision Time Protocol), which supports the analysis of the data from spatially separated measurement and protection devices. 

The GSP274 is fully integrated in the Bachmann SolutionCenter. Configurations can be created simply and stored for later reuse. Both the measured channel values and also the derived values are made available directly in the user interface. Commissioning and fault analysis are simplified with tabular, phasor and time sequence displays. Event logs and recorded time sequences can be exported in CSV respectively COMTRADE format. The integrated simulation function simplifies the configuration of protection and monitoring functions.



  • Measurement of current, voltage, frequency, power, power factor, phase angle
  • Measurement of grid harmonics up to the 50th (power quality)
  • Synchronization monitoring / Synchro-check
  • Monitoring/Protection functions for grid and generator protection
  • Controls two circuit-breakers
  • Integrated real-time data recorder
  • Integrated event logging
  • 4Q energy counter
  • Measured value simulation

Approvals / Certificates

System overview