How to provide Overcurrent Protection for Variable Frequency Drives (VFD)?
Either circuit breakers or fuses can be used as the overcurrent protection for a VFD.
Fuses are less likely to have nuisance outages than circuit breakers and are a better option for circuits that have a high-fault current.
However, fuses can drop out one leg of a three-phase circuit and cause damage to a motor if not properly equipped with phase-loss detection.
Circuit breakers can easily be reset if tripped and do not require spares to be stored, which can be costly.
Fuses are less likely to have nuisance outages than circuit breakers and are a better option for circuits that have a high-fault current.
However, fuses can drop out one leg of a three-phase circuit and cause damage to a motor if not properly equipped with phase-loss detection.
Circuit breakers can easily be reset if tripped and do not require spares to be stored, which can be costly.
Released for: Schneider Electric United Arab Emirates
