Siemens siprotec 7SA522, Руководство пользователя

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