Settings - Siemens siprotec 7SA522 User Manual

6.2.2.3

Settings

Addr. Setting Title
1201 FCT Distance
1202 Minimum Iph>
1215 Paral.Line Comp
1232 SOTF zone
1241 R load (Ø-E)
ϕ load (Ø-E)
1242
1243 R load (Ø-Ø)
ϕ load (Ø-Ø)
1244
1317 Trip 1pole Z2
1203 3I0> Threshold
1204 3U0> Threshold
1207 3I0>/ Iphmax
1221 2Ph-E faults
7SA522 Manual
C53000-G1176-C119-2
The spread angle of the load trapezoid
dress ) must be greater (approx. 5°) than the maximum arising load angle (cor-
responding to the minimum power factor cos ϕ).
Calculation example:
minimum power factor
cos ϕ
= 0.63
min
ϕ
= 51°
max
= ϕ
Setting ϕ load (Ø-E)
max
Setting Options
ON
OFF
0.10..4.00 A
NO
YES
with Pickup (non-directional)
with Zone Z1B
Inactive
0.10..250.00 Ohm
20..60 °
0.10..250.00 Ohm
20..60 °
NO
YES
0.05..4.00 A
1..100 V
0.05..0.30
block leading ph-e loop
block lagging ph-e loop
all loops
only phase-phase loops
only phase-earth loops
The indicated secondary current values and values of impedance for setting ranges
and default settings refer to I
are to be multiplied by 5. The values of impedance are divided by 5.
(address ) and j load (Ø-Ø) (ad-
j load (Ø-E)
+ 5° = °.
Default Setting
ON
0.10 A
NO
Inactive
∞ Ohm
45 °
∞ Ohm
45 °
NO
0.10 A
5 V
0.10
block leading ph-e
loop
= 1 A. For the nominal current 5 A the current values
N
Functions
Comments
Distance protection is
Phase Current threshold for dist.
meas.
Mutual coupling parall.line com-
pensation
Instantaneous trip after Swit-
chOnToFault
R load, minimum Load Impe-
dance (ph-e)
PHI load, maximum Load Angle
(ph-e)
R load, minimum Load Impe-
dance (ph-ph)
PHI load, maximum Load Angle
(ph-ph)
Single pole trip for faults in Z2
3I0 threshold for neutral current
pickup
3U0 threshold zero seq. voltage
pickup
3I0>-pickup-stabilisation (3I0> /
Iphmax)
Loop selection with 2Ph-E faults
6-41