ABB Relion 620 Series - Page 258

of the value to the phase selection logic. If the ENA_MULT input is active, the Start
value setting is multiplied by the Start value Mult setting.
The IED does not accept the Start value or Start value Mult setting if the
product of these settings exceeds the Start value setting range.
The start value multiplication is normally done when the inrush detection function
(INRPHAR) is connected to the ENA_MULT input.
Figure 127: Start value behavior with ENA_MULT input activated
Phase selection logic
The phase selection logic detects the faulty phase or phases and controls the timers
according to the set value of the Num of start phases setting.
Protection functions
1MRS757644 H
258 620 series
Technical Manual