ABB REL670 2.2 IEC, Applications Manual

Page: 328 / 908

remote end that is used in the communication scheme. In equation 273 the index
ZmRv references the specific zone to be coordinated to.
min ZmRv
RFRvPE 1.2 RFPE
³ ×
EQUATION1316 V1 EN-US
(Equation 273)
8.10.3.3 Phase-to-phase fault in forward direction
M13142-168 v2
Reactive reach
M13142-170 v3
The reach in reactive direction is determined by phase-to-earth reach setting X1 .
No extra setting is required.
Resistive reach
GUID-01D7AB58-12CD-44EB-89E4-4D11828141D1 v1
R1PE and R0PE must be set in a way that the loop characteristic angle can be 60
deg (this gives a characteristic angle of 90 deg. at three-phase faults). If the 500-
series characteristic angle of 70 deg. is desired,
R1PE and R0PE must be set
accordingly.
Fault resistance reach
GUID-CA51D9C7-7D9A-4DE5-92F1-FA1280BB899D v1
The fault resistance reaches in forward direction RFFwPP , must cover RFPP
Zm
with at least 25% margin. RFPP
Zm
is the setting of fault resistance for phase-to-
phase fault for the longest overreaching zone to be covered by FRPSPDIS, as
shown in figure
164 . The minimum recommended reach can be calculated
according to equation 274 and 275 .
Index PHS in images and equations reference settings for Phase
selection, quadrilateral characteristic with settable angle function
FRPSPDISand index Zm reference settings for Distance protection
function ZMRPDIS.
A) 60°
1.25
zm
RFFwPP RFPP
³ ×
EQUATION1318 V3 EN-US
(Equation 274)
B) 70°
1.82 1
0.32 1 0.91
Zm Zm Zm
RFFwPP R PP
X PP RFPP
> ×
+ × + ×
EQUATION2226 V1 EN-US
(Equation 275)
where:
RFPP
Zm
is the setting of the longest reach of the overreaching zones that must be covered by
FRPSPDIS.
Section 8
1MRK 506 369-UEN B
Impedance protection
322 Line distance protection REL670 2.2 IEC
Application manual