ABB Remote I/O RIO600 Installation And Commissioning Manual page 103

1MRS757488 H
RIO600
Installation and Commissioning Manual
Relay characteristic angle (RCA) is set to positive if the operating current lags the
polarizing quantity and negative if the operating current leads the polarizing quantity.
Max reverse
angle
Reverse
area
Min reverse
angle
GUID-BBCBE38C-3402-46DD-A3CC-AFFF2A73E8BA V1 EN
Figure 54: Configurable operating sectors
Table 63 and Table 64 describe conditions under which per phase fault direction and
combined fault directions values are calculated.
Table 63: Per phase fault direction indication
Criterion for per phase fault direction information
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
U
A
RCA = + 60 deg
Min forward
angle
I
A
Forward
area
Max forward
Value for fault direction FLT_A, FLT_B, FLT_C
0 = unknown
1 = forward
2 = backward
3 = both
Section 6
Commissioning
angle
95