Siemens SIPROTEC

Appendix
A.7 Settings
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
697
3151 IEC Curve Earth Fault O/C Normal Inverse
Very Inverse
Extremely Inv.
LongTimeInverse
Normal Inverse IEC Curve
3152 ANSI Curve Earth Fault O/C Inverse
Short Inverse
Long Inverse
Moderately Inv.
Very Inverse
Extremely Inv.
Definite Inv.
Inverse ANSI Curve
3153 LOG Curve Earth Fault O/C Log. inverse Log. inverse LOGARITHMIC Curve
3154 3I0p Startpoint Earth Fault O/C 1.0 .. 4.0 1.1 Start point of inverse characteris-
tic
3155 k Earth Fault O/C 0.00 .. 3.00 sec 0.50 sec k-factor for Sr-characteristic
3156 S ref Earth Fault O/C 1A 1 .. 100 VA 10 VA S ref for Sr-characteristic
5A 5 .. 500 VA 50 VA
3157 BLK /1p 3I0p Earth Fault O/C
Earth Fault O/C
Earth Fault O/C
Earth Fault O/C
YES
No (non-dir.)
YES Block 3I0p during 1pole dead
time
3158 Trip 1p 3I0p Earth Fault O/C
Earth Fault O/C
Earth Fault O/C
Earth Fault O/C
YES
NO
YES Single pole trip with 3I0p
3160 POLARIZATION Earth Fault O/C U0 + IY or U2
U0 + IY
with IY only
with U2 and I2
zero seq. power
U0 + IY or U2 Polarization
3162A Dir. ALPHA Earth Fault O/C 0 .. 360 ° 338 ° ALPHA, lower angle for forward
direction
3163A Dir. BETA Earth Fault O/C 0 .. 360 ° 122 ° BETA, upper angle for forward di-
rection
3164 3U0> Earth Fault O/C 0.5 .. 10.0 V 0.5 V Min. zero seq.voltage 3U0 for po-
larizing
3165 IY> Earth Fault O/C 1A 0.05 .. 1.00 A 0.05 A Min. earth current IY for polariz-
ing
5A 0.25 .. 5.00 A 0.25 A
3166 3U2> Earth Fault O/C 0.5 .. 10.0 V 0.5 V Min. neg. seq. polarizing voltage
3U2
3167 3I2> Earth Fault O/C 1A 0.05 .. 1.00 A 0.05 A Min. neg. seq. polarizing current
3I2
5A 0.25 .. 5.00 A 0.25 A
3168 PHI comp Earth Fault O/C 0 .. 360 ° 255 ° Compensation angle PHI comp.
for Sr
3169 S forward Earth Fault O/C 1A 0.1 .. 10.0 VA 0.3 VA Forward direction power thresh-
old
5A 0.5 .. 50.0 VA 1.5 VA
3170 2nd InrushRest Earth Fault O/C 10 .. 45 % 15 % 2nd harmonic ratio for inrush re-
straint
3171 Imax InrushRest Earth Fault O/C 1A 0.50 .. 25.00 A 7.50 A Max.Current, overriding inrush
restraint
5A 2.50 .. 125.00 A 37.50 A
3172 SOTF Op. Mode Earth Fault O/C PICKUP
PICKUP+DIRECT.
PICKUP+DIRECT. Instantaneous mode after
SwitchOnToFault
3173 SOTF Time DELAY Earth Fault O/C 0.00 .. 30.00 sec 0.00 sec Trip time delay after SOTF
3174 BLK for DisZone Earth Fault O/C in zone Z1
in zone Z1/Z1B
in each zone
in each zone Block E/F for Distance Protection
Pickup
3175 EF BLK Dif.PU Earth Fault O/C YES
NO
YES Block E/F for Differential Prot.
Pickup
3182 3U0>(U0 inv) Earth Fault O/C 1.0 .. 10.0 V 5.0 V 3U0> setpoint
3183 U0inv. minimum Earth Fault O/C 0.1 .. 5.0 V 0.2 V Minimum voltage U0min for T-
>oo
3184 T forw. (U0inv) Earth Fault O/C 0.00 .. 32.00 sec 0.90 sec T-forward Time delay (U0inv)
3185 T rev. (U0inv) Earth Fault O/C 0.00 .. 32.00 sec 1.20 sec T-reverse Time delay (U0inv)
3186A 3U0< forward Earth Fault O/C 0.1 .. 10.0 V; 0 0.0 V 3U0 min for forward direction
Addr. Parameter Function C Setting Options Default Setting Comments