Siemens SIPROTEC User Manual

Functions
2.3 Differential Protection
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
107
2.3.3 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 second-
ary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
1201 STATE OF DIFF. OFF
ON
ON State of differential protec-
tion
1210 I-DIFF> 1A 0.10 .. 20.00 A 0.30 A I-DIFF>: Pickup value
5A 0.50 .. 100.00 A 1.50 A
1213 I-DIF>SWITCH ON 1A 0.10 .. 20.00 A 0.30 A I-DIFF>: Value under
switch on condition
5A 0.50 .. 100.00 A 1.50 A
1217A T-DELAY I-DIFF> 0.00 .. 60.00 sec; ∞ 0.00 sec I-DIFF>: Trip time delay
1218 T3I0 1PHAS 0.00 .. 0.50 sec; ∞ 0.04 sec Delay 1ph-faults
(comp/isol. star-point)
1219A I> RELEASE DIFF 1A 0.10 .. 20.00 A; 0 0.00 A Min. local current to
release DIFF-Trip
5A 0.50 .. 100.00 A; 0 0.00 A
1221 Ic-comp. OFF
ON
OFF Charging current compen-
sation
1224 IcSTAB/IcN 2.0 .. 4.0 2.5 Ic Stabilising / Ic Nominal
1233 I-DIFF>> 1A 0.8 .. 100.0 A; ∞ 1.2 A I-DIFF>>: Pickup value
5A 4.0 .. 500.0 A; ∞ 6.0 A
1235 I-DIF>>SWITCHON 1A 0.8 .. 100.0 A; ∞ 1.2 A I-DIFF>>: Value under
switch on cond.
5A 4.0 .. 500.0 A; ∞ 6.0 A
2301 INRUSH REST. OFF
ON
OFF Inrush Restraint
2302 2nd HARMONIC 10 .. 45 % 15 % 2nd. harmonic in % of fun-
damental
2303 CROSS BLOCK NO
YES
NO Cross Block
2305 MAX INRUSH PEAK 1A 1.1 .. 25.0 A 15.0 A Maximum inrush-peak
value
5A 5.5 .. 125.0 A 75.0 A
2310 CROSSB 2HM 0.00 .. 60.00 sec; ∞ 0.00 sec Time for Crossblock with
2nd harmonic

Siemens SIPROTEC Specifications

General

Brand	Siemens
Model	SIPROTEC
Category	Protection Device
Language	English