Siemens 7SK80 - Inrush Restraint

Technical Data
4.5 Inrush Restraint
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
374
4.5 Inrush Restraint
Controlled Functions
Setting Ranges / Increments
Functional Limits
Cross-blocking
Overcurrent elements 50-1, 50N-1, 51, 51N, 67-1, 67N-1
Stabilization factor I
2f
/I 10 % to 45 % Increments 1 %
Lower function limit phases for I
Nom
= 1 A at least one phase current (50 Hz and 100
Hz) ≥ 50 mA
for I
Nom
= 5 A at least one phase current (50 Hz and 100
Hz) ≥ 125 mA
Lower function limit ground for I
Nom
= 1 A Ground current (50 Hz and 100 Hz) ≥ 50
mA
for I
Nom
= 5 A Ground current (50 Hz and 100 Hz) ≥ 125
mA
Upper function limit, configurable for I
Nom
= 1 A 0.30 A to 25.00 A Increments
0.01 A
for I
Nom
= 5 A 1.50 A to 125.00 A Increments
0.01 A
Cross-blocking I
A
, I
B
, I
C
ON/OFF