Siemens SIPROTEC 4 7SD80

Inverse Time Current Elements (IEC)
Pickup value 51-B PICKUP
(phases)
for Ι
Nom
= 1 A
0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
Nom
= 5 A
0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 51N-B PICKUP
(ground)
for Ι
Nom
= 1 A
0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
Nom
= 5 A
0.25 A to 20.00 A
or ∞ (ineffective)
Time multipliers
51-B TD IEC
(phases)
0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
51N-B TD IEC
(ground)
0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays
51-B AddT-
DELAY (phases)
0.00 s to 30.00 s Increments 0.01 s
51N-B AddT-
delay (ground)
0.00 s to 30.00 s Increments 0.01 s
Tolerances
Pickup, dropout thresholds Ι
P
, 3Ι
0P
3 % of setting value or 1 % nominal current
Pickup time 2 ≤ Ι/Ι
P
≤ 20 and T
ΙP
≥ 1 s
Pickup time 2 ≤ Ι/3Ι
0P
≤ 20 and T
3Ι0P
≥ 1 s
5 % of setting value ± 15 ms
5 % of setting value ± 15 ms
defined times 1 % of setting value or 10 ms
Pickup value 67-TOC PICKUP
directional phases
for Ι
Nom
= 1 A
0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
Nom
= 5 A
0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 67N-TOC PICKUP
(directional ground)
for Ι
Nom
= 1 A
0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
Nom
= 5 A
0.25 A to 20.00 A
or ∞ (ineffective)
Time multipliers
(directional phases)
67-TOC TD IEC
(phases)
0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
67N-TOC TD
IEC (ground)
0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays
(directional phases)
67-TOC
AddTDel.
(phases)
0.00 s to 30.00 s Increments 0.01 s
67N-TOC
AddTDel
(ground)
0.00 s to 30.00 s Increments 0.01 s
Tolerances (directional phases)
Pickup, dropout thresholds Ι
Pdir
, 3Ι
0Pdir
3 % of setting value or 1 % nominal current
Pickup time 2 ≤ Ι/Ι
Pdir
≤ 20 and T
ΙPdir
≥ 1 s
Pickup time 2 ≤ Ι/3Ι
0Pdir
≤ 20 and T
3Ι0Pdir
≥ 1 s
5 % of setting value ± 15 ms
5 % of setting value ± 15 ms
defined times 1 % of setting value or 10 ms
Characteristics see Figure 4-3
defined times 1 % of setting value or 10 ms
Technical Data
4.7 Time Overcurrent Protection
SIPROTEC 4, 7SD80, Manual 269
E50417-G1100-C474-A2, Edition 02.2018