ABB Remote I/O RIO600 - Page 104

Table 64: Phase combined fault direction value
Criterion for combined fault direction information Value for fault direction FAULT_DIR
The fault direction information for all phases is
unknown
0 = unknown
The fault direction information for at least one
phase is forward, no phase in reverse
1 = forward
The fault direction information for at least one
phase is reverse, no phase in forward
2 = backward
The fault direction information for some phase is
forward and for some phase is reverse
3 = both
Cross-polarizing as polarizing quantity
When cross polarizing is used as a polarizing method, the directional information is
calculated with formulas defined in Table 65.
Table 65: Equations for calculating angle difference for cross polarizing method
Faulted
phases
Used fault
current
Used polarizing
voltage
Angle difference
A I
A
U
BC
φ φ φ U I
BC A RCA
( )
−
( )
− + °90
GUID-A462A4C2-7617-4944-9B69-5AD854D3B40F V1 EN
B
I
B
U
CA
φ φ φ U I
CA B RCA
( )
−
( )
− + °90
GUID-55FC4CD6-7CFB-4ECA-90B9-CDC92683A42F V1 EN
C
I
C
U
AB
φ φ φ U I
AB C RCA
( )
−
( )
− + °90
GUID-C599D19E-ECE2-4741-9B01-5A7743EA36E7 V1 EN
A - B
I I
A B
−
GUID-FAFD19A0-
FE4B-4B96-9DBE-
DC325D510215 V1 EN
U U
BC CA
−
GUID-13B8B970-B7FF-4BE0-
A6A0-1647C3E76B40 V1 EN
φ φ φ U U I I
BC CA A B RCA
−
( )
− −
( )
− + °90
GUID-F791A046-3D0A-498A-9D3B-D0F18ABC4C97 V1 EN
B - C
I I
B C
−
GUID-B9F88540-
BC53-430B-
B648-3BF1FA3B869D V1
EN
U U
CA AB
−
GUID-DEDD912D-F930-4CBA-
A07C-B32CD2D454E7 V1 EN
φ φ φ U U I I
CA AB B C RCA
−
( )
− −
( )
− + °90
GUID-E2C2CB19-A3E9-4FA8-830A-A8E6A06F2D4F V1 EN
C - A
I I
C A
−
GUID-17E5DFF7-58E7-4
B6A-88F0-81233E7935A
6 V1 EN
U U
AB BC
−
GUID-82D6835D-1E63-4898-
BE40-310ACCD2822B V1 EN
φ φ φ U U I I
AB BC C A RCA
−
( )
− −
( )
− + °90
GUID-65D815F8-EF9B-4203-A7F4-52316795EBFD V1 EN
Section 6 1MRS757488 H
Commissioning
96 RIO600
Installation and Commissioning Manual