Siemens siprotec 7SD5, User Manual

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2.14 Backup Time Overcurrent Protection
281
7SD5 Manual
C53000-G1176-C169-1
Instantaneous tripping when the line is switched onto a fault is also possible with the
I -STUB stage. Set parameter
I-STUB SOTF
(address
2635
) to
YES
, if instantaneous
tripping is desired.
2.14.4 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
2601 Operating Mode ON
Only Emer. prot
OFF ON Operating mode
2610 Iph>> 1A 0.10 .. 25.00 A;
∞
2.00 A Iph>> Pickup
5A 0.50 .. 125.00 A;
∞
10.00 A
2611 T Iph>> 0.00 .. 30.00 sec;
∞
0.30 sec T Iph>> Time delay
2612 3I0>> PICKUP 1A 0.05 .. 25.00 A;
∞
0.50 A 3I0>> Pickup
5A 0.25 .. 125.00 A;
∞
2.50 A
2613 T 3I0>> 0.00 .. 30.00 sec;
∞
2.00 sec T 3I0>> Time delay
2614 I>> Telep/BI NO
YES YES Instantaneous trip via Tele-
prot./BI
2615 I>> SOTF NO
YES NO Instantaneous trip after
SwitchOnToFault
2620 Iph> 1A 0.10 .. 25.00 A;
∞
1.50 A Iph> Pickup
5A 0.50 .. 125.00 A;
∞
7.50 A
2621 T Iph> 0.00 .. 30.00 sec;
∞
0.50 sec T Iph> Time delay
2622 3I0> 1A 0.05 .. 25.00 A;
∞
0.20 A 3I0> Pickup
5A 0.25 .. 125.00 A;
∞
1.00 A
2623 T 3I0> 0.00 .. 30.00 sec;
∞
2.00 sec T 3I0> Time delay
2624 I> Telep/BI NO
YES NO Instantaneous trip via Tele-
prot./BI
2625 I> SOTF NO
YES NO Instantaneous trip after
SwitchOnToFault
2630 Iph> STUB 1A 0.10 .. 25.00 A;
∞
1.50 A Iph> STUB Pickup
5A 0.50 .. 125.00 A;
∞
7.50 A
2631 T Iph STUB 0.00 .. 30.00 sec;
∞
0.30 sec T Iph STUB Time delay
2632 3I0> STUB 1A 0.05 .. 25.00 A;
∞
0.20 A 3I0> STUB Pickup
5A 0.25 .. 125.00 A;
∞
1.00 A
2633 T 3I0 STUB 0.00 .. 30.00 sec;
∞
2.00 sec T 3I0 STUB Time delay
2634 I-STUB Telep/BI NO
YES NO Instantaneous trip via Tele-
prot./BI
2635 I-STUB SOTF NO
YES NO Instantaneous trip after
SwitchOnToFault
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