This dv/dt filter is an option for variable speed drives of Altivar Process ATV600 / ATV900 range.Its rated current is equal to 305A.It is used as an output filter (between drive output and motor) and enables your variable speed drive to run with motor cables longer than the maximum permitted lengths.Its protection index is IP00.It weighs 40kg.It is used to limit overvoltages at the motor terminals, filter interference and reduce motor earth leakage current.