ABB RELION 620 Series Technical Manual page 292

Section 4
Protection functions
286
DPH3xPDOC can be forced to non-directional operation with the NON_DIR input.
When the NON_DIR input is active, DPH3xPDOC operates as a non-directional
overcurrent protection regardless of the Directional mode setting.
GUID-718D61B4-DAD0-4F43-8108-86F7B44E7E2D V1 EN
Figure 140: Operating zones at minimum magnitude levels
Level detector
The measured phase currents are compared to the set Start value. If the measured
value exceeds the set Start value, the level detector reports the exceeding of the value,
together with the directional results of that phase, 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.
1MRS757644 F
620 series
Technical Manual