Functions
2.8 Earth Fault Protection in Earthed Systems (optional)
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
247
3160 POLARIZATION U0 + IY or U2
U0 + IY
with IY only
with U2 and I2
zero seq. power
U0 + IY or U2 Polarization
3162A Dir. ALPHA 0 .. 360 ° 338 ° ALPHA, lower angle for
forward direction
3163A Dir. BETA 0 .. 360 ° 122 ° BETA, upper angle for
forward direction
3164 3U0> 0.5 .. 10.0 V 0.5 V Min. zero seq.voltage 3U0
for polarizing
3165 IY> 1A 0.05 .. 1.00 A 0.05 A Min. earth current IY for
polarizing
5A 0.25 .. 5.00 A 0.25 A
3166 3U2> 0.5 .. 10.0 V 0.5 V Min. neg. seq. polarizing
voltage 3U2
3167 3I2> 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 0 .. 360 ° 255 ° Compensation angle PHI
comp. for Sr
3169 S forward 1A 0.1 .. 10.0 VA 0.3 VA Forward direction power
threshold
5A 0.5 .. 50.0 VA 1.5 VA
3170 2nd InrushRest 10 .. 45 % 15 % 2nd harmonic ratio for
inrush restraint
3171 Imax InrushRest 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 PICKUP
PICKUP+DIRECT.
PICKUP+DIRECT. Instantaneous mode after
SwitchOnToFault
3173 SOTF Time DELAY 0.00 .. 30.00 sec 0.00 sec Trip time delay after SOTF
3174 BLK for DisZone 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 YES
NO
YES Block E/F for Differential
Prot. Pickup
3182 3U0>(U0 inv) 1.0 .. 10.0 V 5.0 V 3U0> setpoint
3183 U0inv. minimum 0.1 .. 5.0 V 0.2 V Minimum voltage U0min
for T->oo
3184 T forw. (U0inv) 0.00 .. 32.00 sec 0.90 sec T-forward Time delay
(U0inv)
3185 T rev. (U0inv) 0.00 .. 32.00 sec 1.20 sec T-reverse Time delay
(U0inv)
3186A 3U0< forward 0.1 .. 10.0 V; 0 0.0 V 3U0 min for forward direc-
tion
3187A XserCap 1A 0.000 .. 600.000 Ω 0.000 Ω Reactance X of series ca-
pacitor
5A 0.000 .. 120.000 Ω 0.000 Ω
Addr. Parameter C Setting Options Default Setting Comments
To Next Page
Loading...
Need help?
General
