ABB RER670 - Page 152

83.01
112.0
298.0
2
1
1
2
1
1
0

















X
X
X
X
L
E
IECEQUATION15053 V1 EN-US (Equation 27)
Direction
GUID-464CA6EE-24D9-4F19-972C-F1EE1D4B9FFE v2
ArgNegRes: This is the angle for blinder in the second quadrant. Set this to 120
deg.
ArgDir: This is the angle of setting in the fourth quadrant. Set this to 15 deg.
Zone 1
GUID-7624CA36-5684-49B8-8A30-C265B72ABAF9 v1
OpZ1: Set this to On.
DirModeZ1: This is used to set the zone 1 direction mode. Set this to Forward.
PhSelModeZ1: This is used to enable the measuring loops of zone 1. Set this to
Phsel logic.
LEModeZ1: This is used to operate the load discrimination characteristic of zone 1.
Set this to On.
LCModeZ1: This is used to enable/disable the adaptive load compensation mode of
zone 1. Set this to On.
X1FwZ1: This is used to set the forward positive sequence reactance reach of zone
1 in Ohm/p. The recommended setting is 90% of the protected line length.
Therefore, set the X1FwZ1 to 0.9 x 50.0 x 0.112 = 5.6 Ohm.
X1RvZ1: This is used to set the reverse positive sequence impedance reach of zone
1 in Ohm/p. Set this to 5.6 Ohm.
REoverRLZ1: It provides zero sequence compensation for phase-to-earth faults.
28.01
097.0
151.0
2
1
1
2
1
1
0

















R
R
R
R
L
E
IECEQUATION15052 V1 EN-US (Equation 28)
Therefore, set this to 0.28.
XEoverXLZ1: It provides zero sequence compensation for phase-to-earth faults.
83.01
112.0
298.0
2
1
1
2
1
1
0

















X
X
X
X
L
E
IECEQUATION15053 V1 EN-US (Equation 29)
Therefore, set this to 0.83.
RFPEFwZ1: It should be set to give maximum coverage considering the arc
resistance and tower footing resistance.
Section 7 1MRK 506 375-UEN A
Impedance protection
146 Railway application RER670 2.2 IEC
Application manual