Backward operating zone
Forward operating zone
-Uo
j
RCA
= 0 deg
Non-operating zone
Min forward angle
Min reverse angle
Min operate
current
Max forward angle
Max reverse angle
Io
j
GUID-2AD845F7-2F52-49A1-94DD-E04FAD186750 V1 EN
Figure 64:
Configurable operating sectors in phase angle characteristic
Table 73:
Fault direction indication
Fault direction
Value
Angle between the polarizing and operating
quantity is not in any of the defined sectors
0 = unknown
Angle between the polarizing and operating
quantity is in the forward sector
1 = forward
Angle between the polarizing and operating
quantity is in the reverse sector
2 = backward
Angle between the polarizing and operating
quantity is in both the forward and the reverse
sectors, that is, the sectors are overlapping.
3 = both
The directional operations forward and reverse are not allowed when the measured
polarizing or operating quantities are invalid, that is, their magnitude is below the
minimum operate values. In case of low magnitudes, the
STR DIRGENERAL
output
is set to 0=unknown. This means the function is allowed to operate in the directional
mode as non-directional, since the directional information is invalid.
Iosin and Iocos criteria
Section 6
1MRS757488 H
Commissioning
110
RIO600
Installation and Commissioning Manual
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