SIMOREG CCP limits the current that flows when inverter commutation faults occur to a non-hazardous value so that the thyristors and the associated super-fast fuses are protected. This eliminates the complex and time consuming replacement of fuses after inverter commutation faults.
Although inverter commutation faults cannot be prevented, their effects can be.
Gear units and the driven machine are protected by shutting off the current in time before it reaches its possible maximum value in the case of a fault therefore protecting them against inadmissibly high torque surges.
For high rated system currents, up until now, high-speed DC circuit breakers were used up until now to protect the fuses against rupture. By using the CCP, protection is now cost-effectively possible even for lower line currents, whereby SIMOREG CCP has the following advantages when compared to high-speed DC circuit breakers even at high current levels:
Protection also for circulating currents
Lower system costs
Lower space requirements
No additional air reactor to reduce the current rate-of-rise when a fault occurs
Lower operating costs, as it requires no maintenance
