Siemens SIPROTEC 7SJ80

Inrush Restraint
Controlled Elements
Time Overcurrent Elements 50-1, 50N-1, 51, 51N, 67-1, 67N-1
Setting Ranges / Increments
Stabilization factor Ι
2f
/Ι
10 % to 45 % Increments 1 %
Functional Limits
Lower Function Limit Phases
for Ι
Nom
= 1 A
at least one phase current (50 Hz and 100 Hz) ≥ 50 mA
for Ι
Nom
= 5 A
at least one phase current (50 Hz and 100 Hz) ≥ 125 mA
Lower Function Limit ground
for Ι
Nom
= 1 A
Ground current (50 Hz and 100 Hz) ≥ 50 mA
for Ι
Nom
= 5 A
Ground current (50 Hz and 100 Hz) ≥ 125 mA
Upper Function Limit,
configurable
for Ι
Nom
= 1 A
0.30 A to 25.00 A Increments 0.01 A
for Ι
Nom
= 5 A
1.50 A to 125.00 A Increments 0.01 A
Crossblock
Crossblock Ι
A
, Ι
B
, Ι
C
ON/OFF
4.5
Technical Data
4.5 Inrush Restraint
378 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017