Distance Relay Setting Examples
GARD 8000 Distance Relay
RFL Electronics Inc.
Note that in the “Line Protection System Settings” below, only settings related to DCB distance
operation have been entered and enabled, which in this example means that only Zone 1 is set enabled.
Description Range
Units
Step
Actual
Line Pos.Seq. Impedance Magnitude
Positive sequence impedance magnitude for the protected line in
secondary ohms
0.01 - 100
Ohm
0.01
4.13
Line Pos.Seq. Impedance Angle
Positive sequence impedance angle for the protected line in
degrees
5 - 90
deg
1
85
Pos. Seq. Angle Zone 2
Positive sequence impedance angle for the protected line sections
for Zone 2 in degrees
5 - 90
deg
1
85
Pos. Seq. Angle Zone 3
Positive sequence impedance angle for the protected line sections
for Zone 3 in degrees
5 - 90
deg
1
85
Pos. Seq. Angle Zone 4
Positive sequence impedance angle for the protected line sections
for Zone 4 in degrees
5 - 90
deg
1
85
Zone 1 k0 Factor
Zero sequence compensation factor magnitude for Zone 1.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
3.52
Line Zero Seq. Impedance Angle
Zero sequence impedance angle for the protected line in degrees
5 - 90
deg
1
74
Zone 2 k0 Factor
Zero sequence compensation factor magnitude for Zone 2.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
3.52
Zone 2 Zero Seq. Angle
Zero sequence impedance (Z0) angle in degrees for Zone 2.
5 - 90
deg
1
74
Zone 3 k0 Factor
Zero sequence compensation factor magnitude for Zone 3.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
3.52
Zone 3 Zero Seq. Angle
Zero sequence impedance (Z0) angle in degrees for Zone 3.
5 - 90
deg
1
74
Zone 4 k0 Factor
Zero sequence compensation factor magnitude for Zone 4.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
3.52
Zone 4 Zero Seq. Angle
Zero sequence impedance (Z0) angle in degrees for Zone 4.
5 - 90
deg
1
74
Local Pos.Seq. Source Impedance Magnitude
Positive sequence impedance magnitude for the local source, in
secondary ohms. Used for the fault locator. As the source
impedance value may differ depending on system configuration,
use the typical value.
0.01 - 100
Ohm
0.01
5.00
Local Pos.Seq. Source Impedance Angle
Positive sequence impedance angle for the local source, in
degrees. Used for the fault locator. As the source impedance
value may differ depending on system configuration, use the
typical value.
5 - 90
deg
1
85
August 1, 2009
8-15
973.334.3100
