Residual current circuit breakers
Failing internal components may cause the frequency inverter to generate high-energy direct current in the entire protective earth conductor system that is not detected by standard residual current circuit breakers. Thus, in the power connection, a residual current circuit breaker should either be omitted, or a suitable one be used.
DANGERDanger of death due to electric shock by protective earth conductor system and earthed machine housings!
Danger of death due to electric shock by protective earth conductor system and earthed machine housings!
Carefully select and mount residual current circuit breakers.
Check the protective earth conductor system.
If a residual current circuit breaker is to be integrated in the power connection, it must be sensitive to all current types (type B). This type is capable of detecting residual direct currents.