Siemens SIPROTEC 7SD80 - Page 305

Technical Data
4.7 Time Overcurrent Protection
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
305
Inverse Time Elements (ANSI)
Pickup value 51-B PICKUP
(phases)
for I
Nom
= 1 A 0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 51N-B PICKUP
(ground)
for I
Nom
= 1 A 0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.25 A to 20.00 A
or ∞ (ineffective)
Time multipliers 51-B TD ANSI
(phases)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
51N-B TD ANSI
(ground)
0.50 s to 15.00 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 AddTdelay
(ground)
0.00 s to 30.00 s Increments 0.01 s
Tolerances
Pickup, dropout thresholds I
P
, 3I
0P
3 % of setting value or 1 % of nominal current
Pickup time 2 ≤ I/I
P
≤ 20 and D
IP
≥ 1s
Pickup time 2 ≤ I/3I
0P
≤ 20 and D
3I0P
≥ 1s
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 I
Nom
= 1 A 0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 67N-TOC PICKUP
(Earth directional)
for I
Nom
= 1 A 0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.25 A to 20.00 A
or ∞ (ineffective)
Time multipliers
(directional elements)
67-TOC TD ANSI
(phases)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
67N-TOC TD ANSI
(ground)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays
(directional elements)
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 elements)
Pickup, dropout thresholds I
Pdir
, 3I
0Pdir
3 % of setting value or 1 % of nominal current
Pickup time 2 ≤ I/I
Pdir
≤ 20 and D
IPdir
≥ 1s
Pickup time 2 ≤ I/3I
0Pdir
≤ 20 and D
3I0Pdir
≥ 1s
5 % of setting value ± 15 ms
5 % of setting value ± 15 ms
Characteristics see Figure 4-4 and 4-5
defined times 1 % of setting value or 10 ms