Generator and Motor Commander

Synchronous machine control & protection in one package

The Generator and Motor Commander is a new innovation combining synchronous machine protection and control into one unit. Compared to traditional systems with several separate units and software, the Generator and Motor Commander takes less space and saves considerable hours of engineering time. Operation is smooth as there is only one interface to the system.

 

Highlights

  • Over 86% space savings compared to traditional solution.
  • Less spare parts needed.
  • One, easy to use, software saves engineering time
  • The included software wizard adapts the data from the generator specifications and calculates the majority of the parameters directly.
  • 0,2S class measurement, robust technology and the newest protection functions guarantee the best solution available on the market.


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  • Generator protection functions
  • Generator/transformer differential (87T/87N/87G)
  • Harmonic overcurrent (Ih>; 50H/51H/68H) - 4 stages (INST, DT or IDMT)
  • Negative sequence overcurrent/ Phase current reversal/ Current unbalance (I2>; 46/46R/46L) - 2 stages (INST, DT or IDMT)
  • Directional overcurrent (Idir>; 67) - 4 stages (INST, DT or IDMT)
  • Sequence voltage (U1/U2>/<; 47/27P/59PN) - 2 stages (INST, DT or IDMT)
  • Rate-of-change of frequency (df/dt>/<; 81R) - 4 stages (INST, DT or IDMT)
  • Loss of excitation (40)
  • Voltage-restrained overcurrent (Iv>; 51V)
  • Trigger current pulse: 4 000 A
  • Overpower (P>; 32O)
  • Underimpedance (Z<; 21U)
  • Volts-per-hertz overexcitation (V/Hz>; 24)
  • Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional)
  • Non-directional overcurrent (I>; 50/51) - 4 stages (INST, DT or IDMT)
  • Non-directional earth fault (I0>; 50N/51N) - 4 stages (INST, DT or IDMT)
  • Directional overcurrent (Idir>; 67) - 4 stages (INST, DT or IDMT)
  • Harmonic overcurrent (Ih>; 50H/51H/68H) - 4 stages (INST, DT or IDMT)
  • Negative sequence overcurrent/ Phase current reversal/ Current unbalance (I2>; 46/46R/46L) - 4 stages (INST, DT or IDMT)
  • Motor start/ Locked rotor monitoring (Ist>; 48/14)
  • Frequent start (N>; 66)
  • Non-directional undercurrent (I<; 37)
  • Power factor (PF<; 55)
  • Mechanical jam (Im>; 51M)
  • Loss of excitation (40)
  • Overvoltage (U>; 59) - 4 stages (INST, DT or IDMT)
  • Undervoltage (U<; 27) - 4 stages (INST, DT or IDMT)
  • Neutral overvoltage (U0>; 59N) - 4 stages (INST, DT or IDMT)
  • Overfrequency and underfrequency (f>/<; 81O/81U) - 8 stages (INST or DT)
  • Circuit breaker failure protection (CBFP; 50BF/52BF)
  • Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional)
  • Synchronizer (ΔV/Δa/Δf; 25)
  • Excitation with external IGBT bridge
  • Number of objects to control and monitor: 10
  • Number of setting groups: 8
  • Phase, sequence and residual currents (IL1, IL2, IL3, I01, I02)
  • Frequency (f)
  • Circuit breaker wear monitoring
  • Disturbance recorder (max. 15 000 permanent event records)
  • Current transformer supervision
  • Voltage transformer supervision (60)
  • Trip circuit supervision
  • Event recording
  • Current inputs: 10
  • Voltage inputs: 4
  • Digital inputs (fixed): 6
  • Options (11 slots)
  • Digital outputs: +5/10/15/20/25/30
  • RJ-45 100 Mbps Ethernet and RS-485 (rear panel, fixed)
  • Double LC 100 Mbps Ethernet (optional)
  • RS-232 & serial fibre (PP/PG/GP/GG) (optional)
  • Communication protocols
  • IEC 61850
  • Modbus/RTU and Modbus/TCP
  • DNP3
  • SPA