Technical Data
4.5 Inrush Restraint
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
494
4.5
Inrush Restraint
Controlled Elements
Setting Ranges / Increments
Functional Limits
Crossblock
Time 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)
≥
25 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)
≥
25 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)
Crossblock
I
A
,
I
B
,
I
C
ON/OFF
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