part of Figure "Directional characteristic for cos-ϕ-measurement" in the functional description of the sensitive
ground fault detection).
Information on the Configuration of the Current Threshold
With devices with sensitive ground fault input, generally settings may be entered in primary values with
consideration given to the ratio of the applicable current transformer. However, problems related to the reso-
lution of the pickup currents can occur when very small settings and small nominal primary currents are
involved. The user is therefore encouraged to enter settings for the sensitive ground fault detection in secon-
dary values.
Settings
Addresses which have an appended “A” can only be changed with DIGSI, under “Additional Settings”.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding secon-
dary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
3101 Sens. Gnd Fault OFF
ON
ON with GF log
Alarm Only
OFF (Sensitive) Ground Fault
3102 CT Err. I1 0.001 .. 1.600 A 0.050 A Current I1 for CT Angle
Error
3102 CT Err. I1 1A 0.05 .. 35.00 A 1.00 A Current I1 for CT Angle
Error
5A 0.25 .. 175.00 A 5.00 A
3103 CT Err. F1 0.0 .. 5.0 ° 0.0 ° CT Angle Error at I1
3104 CT Err. I2 0.001 .. 1.600 A 1.000 A Current I2 for CT Angle
Error
3104 CT Err. I2 1A 0.05 .. 35.00 A 10.00 A Current I2 for CT Angle
Error
5A 0.25 .. 175.00 A 50.00 A
3105 CT Err. F2 0.0 .. 5.0 ° 0.0 ° CT Angle Error at I2
3106 VPH MIN 10 .. 100 V 40 V L-Gnd Voltage of Faulted
Phase Vph Min
3107 VPH MAX 10 .. 100 V 75 V L-Gnd Voltage of Unfaulted
Phase Vph Max
3108 64-1 VGND 1.8 .. 200.0 V; ∞ 40.0 V 64-1 Ground Displacement
Voltage
3109 64-1 VGND 1.8 .. 170.0 V; ∞ 40.0 V 64-1 Ground Displacement
Voltage
3110 64-1 VGND 10.0 .. 225.0 V; ∞ 70.0 V 64-1 Ground Displacement
Voltage
3111 T-DELAY Pickup 0.00 .. 320.00 sec; ∞ 1.00 sec Time-DELAY Pickup
3112 64-1 DELAY 0.10 .. 40000.00 sec; ∞ 10.00 sec 64-1 Time Delay
3113 50Ns-2 PICKUP 0.001 .. 1.500 A 0.300 A 50Ns-2 Pickup
3113 50Ns-2 PICKUP 1A 0.05 .. 35.00 A 10.00 A 50Ns-2 Pickup
5A 0.25 .. 175.00 A 50.00 A
3114 50Ns-2 DELAY 0.00 .. 320.00 sec; ∞ 1.00 sec 50Ns-2 Time Delay
3115 67Ns-2 DIRECT Forward
Reverse
Non-Directional
Forward 67Ns-2 Direction
3117 50Ns-1 PICKUP 0.001 .. 1.500 A 0.100 A 50Ns-1 Pickup
2.13.5
Functions
2.13 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s)
SIPROTEC 4, 7SJ62/64, Manual 221
C53000-G1140-C207-8, Edition 08.2016