is set below the minimum single-phase current. If only the phase currents are to be monitored, set the pickup
value of the residual current stage to ∞ .
The times T Iph STUB (address 2631) and T 3I0 STUB (address 2633) are set to 0 s for this application, so
that the protection triggers with open isolator.
If this stage is applied differently, similar considerations as for the other overcurrent stages apply.
The parameter I-STUB Telep/BI (address 2634) determines, whether the time delays
>O/C InstTRIP
can be bypassed by the binary input T Iph STUB (address 2631) and T 3I0 STUB (address 2633) is
possible. The binary input (if allocated) is applied to all stages of the time-overcurrent protection. With I-
STUB Telep/BI = YES you determine that the Ι>>>-stages trip without delay after pickup if the binary input
was activated. For I-STUB Telep/BI = NO the set delays are always active
If the Ι>>>-stage, when switching the line onto a fault, is to trip without delay or with a short delay, SOTF
Time DELAY (address 2680, see above under margin heading “General”) set the parameter I-STUB SOTF
(address 2635) to YES. When used as stub fault protection, select the setting NO since the effect of this protec-
tion function solely depends on the position of the isolator.
Settings
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding secon-
dary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
2601 Operating Mode ON
OFF
ON Operating mode
2610 Iph>> 1A 0.05 .. 50.00 A 2.00 A Iph>> Pickup
5A 0.25 .. 250.00 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>> InstTrip BI NO
YES
YES Instantaneous trip via BI
2615 I>> SOTF NO
YES
NO Instantaneous trip after
SwitchOnToFault
2620 Iph> 1A 0.05 .. 50.00 A 1.50 A Iph> Pickup
5A 0.25 .. 250.00 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 0.05 .. 50.00 A 1.50 A Iph> STUB Pickup
5A 0.25 .. 250.00 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
2.3.4
Functions
2.3 Overcurrent protection (optional)
80 SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
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