ABB RELION REX640 Technical Manual page 738

Protection functions
Table 668: Angle outputs when settings CT connection 1-2 and CT connection 1-3
match the actual CT connections on windings 1, 2 and 3 but the phase order is
wrong on winding 1
Angle output name
I_ANGL_A1_B1
I_ANGL_B1_C1
I_ANGL_C1_A1
I_ANGL_A2_B2
I_ANGL_B2_C2
I_ANGL_C2_A2
I_ANGL_A3_B3
I_ANGL_B3_C3
I_ANGL_C3_A3
I_ANGL_A1_A2
I_ANGL_B1_B2
I_ANGL_C1_C2
I_ANGL_A1_A3
I_ANGL_B1_B3
I_ANGL_C1_C3
Table 669: Angle outputs when settings CT connection 1-2 and CT connection 1-3
match the actual CT connections on windings 1, 2 and 3 but the phase order is
wrong on winding 2
Angle output name
I_ANGL_A1_B1
I_ANGL_B1_C1
I_ANGL_C1_A1
I_ANGL_A2_B2
I_ANGL_B2_C2
I_ANGL_C2_A2
I_ANGL_A3_B3
I_ANGL_B3_C3
I_ANGL_C3_A3
I_ANGL_A1_A2
I_ANGL_B1_B2
Table continues on the next page
738
Angle value
–120
–120
–120
+120
+120
+120
+120
+120
+120
+60
–60
±180
+60
–60
±180
Angle value
+120
+120
+120
–120
–120
–120
+120
+120
+120
–60
+60
1MRS759142 F
Possible reason if not OK
Wrong phase order
Wrong phase order
Wrong phase order
OK
OK
OK
OK
OK
OK
Winding 1 phase B connected
as phase A
Winding 1 phase A connected
as phase B
OK
Winding 1 phase B connected
as phase A
Winding 1 phase A connected
as phase B
OK
Possible reason if not OK
OK
OK
OK
Wrong phase order
Wrong phase order
Wrong phase order
OK
OK
OK
Winding 2 phase B connected
as phase A
Winding 2 phase A connected
as phase B
REX640
Technical Manual