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 Angle value Possible reason if not OK
I_ANGL_A1_B1 –120 Wrong phase order
I_ANGL_B1_C1 –120 Wrong phase order
I_ANGL_C1_A1 –120 Wrong phase order
I_ANGL_A2_B2 +120 OK
I_ANGL_B2_C2 +120 OK
I_ANGL_C2_A2 +120 OK
I_ANGL_A3_B3 +120 OK
I_ANGL_B3_C3 +120 OK
I_ANGL_C3_A3 +120 OK
I_ANGL_A1_A2 +60 Winding 1 phase B connected
as phase A
I_ANGL_B1_B2 –60 Winding 1 phase A connected
as phase B
I_ANGL_C1_C2 ±180 OK
I_ANGL_A1_A3 +60 Winding 1 phase B connected
as phase A
I_ANGL_B1_B3 –60 Winding 1 phase A connected
as phase B
I_ANGL_C1_C3 ±180 OK
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 Angle value Possible reason if not OK
I_ANGL_A1_B1 +120 OK
I_ANGL_B1_C1 +120 OK
I_ANGL_C1_A1 +120 OK
I_ANGL_A2_B2 –120 Wrong phase order
I_ANGL_B2_C2 –120 Wrong phase order
I_ANGL_C2_A2 –120 Wrong phase order
I_ANGL_A3_B3 +120 OK
I_ANGL_B3_C3 +120 OK
I_ANGL_C3_A3 +120 OK
I_ANGL_A1_A2 –60 Winding 2 phase B connected
as phase A
I_ANGL_B1_B2 +60 Winding 2 phase A connected
as phase B
Table continues on the next page
Protection functions 1MRS759142 F
738 REX640
Technical Manual
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