Distance Relay Settings
GARD 8000 Distance Relay
RFL Electronics Inc.
7.2
LINE PROTECTION SYSTEM SETTINGS
Description Range
Units
Step
Default
Line positive sequence magnitude
Positive sequence impedance magnitude for the protected line
in secondary ohms
0.01 - 100
Ohm
0.01
1.25
Line positive sequence angle
Positive sequence impedance angle for the protected line in
degrees
5 - 90
deg
1
75
Positive sequence angle Zone 2
Positive sequence impedance angle for the protected line
sections for Zone 2 in degrees
5 - 90
deg
1
75
Positive sequence angle Zone 3
Positive sequence impedance angle for the protected line
sections for Zone 3 in degrees
5 - 90
deg
1
75
Positive sequence angle Zone 4
Positive sequence impedance angle for the protected line
sections for Zone 4 in degrees
5 - 90
deg
1
75
Zone 1 k0 Factor
Zero sequence compensation factor magnitude for Zone 1.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
4
Line zero sequence angle
Zero sequence impedance angle for the protected line in
degrees
5 - 90
deg
1
75
Zone 2 k0 Factor
Zero sequence compensation factor magnitude for Zone 2.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
4
Zone 2 zero sequence angle
Zero sequence impedance (ZO) angle in degrees for Zone 2.
5 - 90
deg
1
75
Zone 3 k0 Factor
Zero sequence compensation factor magnitude for Zone 3.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
4
Zone 3 zero sequence angle
Zero sequence impedance (ZO) angle in degrees for Zone 3.
5 - 90
deg
1
75
Zone 4 k0 Factor
Zero sequence compensation factor magnitude for Zone 4.
k0=Z0/Z1 (unitless)
0.5 - 10
-
0.01
4
Zone 4 zero sequence angle
Zero sequence impedance (ZO) angle in degrees for Zone 4.
5 - 90
deg
1
75
Local source positive sequence 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
1.25
Local source positive sequence 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
75
Local source zero sequence magnitude
Zero 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
1.25
July 21, 2009
7-2
973.334.3100
