Siemens SIPROTEC 7SD80 - Page 303

Technical Data
4.7 Time Overcurrent Protection
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
303
Overcurrent Elements
Pickup value 50-B2 PICKUP
(phases)
for I
Nom
= 1 A 0.10 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.50 A to 125.00 A
or ∞ (ineffective)
Pickup value 50N-B2 PICKUP
(ground)
for I
Nom
= 1 A 0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.25 A to 125.00 A
or ∞ (ineffective)
Delays 50-B2 DELAY 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
50N-B2 DELAY 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Pickup value 50-STUB PICKUP
(phases)
for I
Nom
= 1 A 0.10 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.50 A to 125.00 A
or ∞ (ineffective)
Pickup value 50N-STUB PICKUP
(ground)
for I
Nom
= 1 A 0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.25 A to 125.00 A
or ∞ (ineffective)
Delays 50-STUB DELAY 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
50N-STUB DELAY 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Pickup value
(directional phases)
for I
Nom
= 1 A 0.10 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.50 A to 125.00 A
or ∞ (ineffective)
Pickup value
(Earth directional)
for I
Nom
= 1 A 0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
Nom
= 5 A 0.25 A to 125.00 A
or ∞ (ineffective)
Delays
(directional elements)
0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Dropout ratio approx. 0.93 for I/I
Nom
≥ 0.5
Pickup times approx. 30 ms
Dropout times approx. 30 ms
Tolerances Currents 3 % of setting value or 1 % nominal current
Times 1 % of setting value or 10 ms
The set times are pure time delays