Siemens siprotec 7SD5 User Manual

2 Functions
228
7SD5 Manual
C53000-G1176-C169-1
This threshold value which is set in the address 3171 Imax InrushRest, should be
larger than the maximum expected inrush current (RMS value).
2.8.3 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Ad-
ditional Settings.
The table indicates region-specific presettings. Column C (configuration) indicates the
corresponding secondary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
3101 FCT EarthFltO/C ON
OFF
ON Earth Fault overcurrent
function is
3102 BLOCK for Dist. every PICKUP
1phase PICKUP
multiph. PICKUP
NO
every PICKUP Block E/F for Distance pro-
tection
3103 BLOCK 1pDeadTim YES
NO
YES Block E/F for 1pole Dead
time
3104A Iph-STAB. Slope 0 .. 30 % 10 % Stabilisation Slope with
Iphase
3105 3IoMin Teleprot 1A 0.01 .. 1.00 A 0.50 A 3Io-Min threshold for Tele-
prot. schemes
5A 0.05 .. 5.00 A 2.50 A
3105 3IoMin Teleprot 1A 0.003 .. 1.000 A 0.500 A 3Io-Min threshold for Tele-
prot. schemes
5A 0.015 .. 5.000 A 2.500 A
3109 Trip 1pole E/F YES
NO
YES Single pole trip with earth
flt.prot.
3110 Op. mode 3I0>>> Forward
Reverse
Non-Directional
Inactive
Inactive Operating mode
3111 3I0>>> 1A 0.05 .. 25.00 A 4.00 A 3I0>>> Pickup
5A 0.25 .. 125.00 A 20.00 A
3112 T 3I0>>> 0.00 .. 30.00 sec; ∞ 0.30 sec T 3I0>>> Time delay
3113 3I0>>> Telep/BI NO
YES
NO Instantaneous trip via Tele-
prot./BI
3114 3I0>>>SOTF-Trip NO
YES
NO Instantaneous trip after
SwitchOnToFault
3115 3I0>>>InrushBlk NO
YES
NO Inrush Blocking
3120 Op. mode 3I0>> Forward
Reverse
Non-Directional
Inactive
Inactive Operating mode
3121 3I0>> 1A 0.05 .. 25.00 A 2.00 A 3I0>> Pickup
5A 0.25 .. 125.00 A 10.00 A
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Siemens siprotec 7SD5 Specifications

General

Brand	Siemens
Model	siprotec 7SD5
Category	Relays
Language	English