ABB RED615 Technical Manual page 294

Section 4
Protection functions
288
GUID-92004AD5-05AA-4306-9574-9ED8D51524B4 V2 EN
Figure 141: Configurable operating sectors in phase angle characteristic
Table 294: Momentary operating direction
Fault direction
Angle between the polarizing and operating
quantity is not in any of the defined sectors.
Angle between the polarizing and operating
quantity is in the forward sector.
Angle between the polarizing and operating
quantity is in the reverse sector.
Angle between the polarizing and operating
quantity is in both the forward and the reverse
sectors, that is, the sectors are overlapping.
If the Allow Non Dir setting is "False", the directional operation (forward, reverse)
is not allowed when the measured polarizing or operating quantities are invalid,
that is, their magnitude is below the set minimum values. The minimum values can
be defined with the settings Min operate current and Min operate voltage. In case
of low magnitudes, the FAULT_DIR and DIRECTION outputs are set to 0 =
unknown, except when the Allow non dir setting is "True". In that case, the
The value for DIRECTION
0 = unknown
1= forward
2 = backward
3 = both
1YHT530004D05 D
615 series
Technical Manual