Siemens SIPROTEC 7SJ61 - Flexible Protection Functions

Technical Data
4.17 Flexible Protection Functions
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
353
4.17 Flexible Protection Functions
Measured Quantities / Modes of Operation
Setting Ranges / Increments
Times
Three-phase I, I
N
, I
Ns
, 3I
0
, I
1
, I
2
Single-phase I, I
N
, I
Ns
Without fixed phase reference Binary Input
Measuring procedure for I Fundamental Harmonic
True RMS (Effective Value)
Positive Sequence System,
Negative Sequence System,
Pickup on Exceeding threshold or
falling below threshold
Pickup thresholds:
Current I, I
1
, I
2
, 3I
0
, I
N
for I
Nom
= 1 A 0.05 to 35.00 A Increments 0.01 A
for I
Nom
= 5 A 0.25 to 175.00 A
Relationship I
2
/I
1
15% to 100% Increments 1%
Sensitive ground currentI
GG
0.001 to 1.500 A Increments 0.001 A
Pickup delay (standard) 0.00 to 60.00 s Increments 0.01 s
Pickup delay for I
2
/I
1
0.00 to 28800.00 s Increments 0.01 s
Command delay time 0.00 to 3600.00 s Increments 0.01 s
Dropout delay 0.00 to 60.00 s Increments 0.01 s
Pickup times:
Current (phase quantities)
for 2 x setting value
for 10 x setting value
Approx. 30 ms
Approx. 20 ms
Current (symmetrical components)
for 2 x setting value
for 10 x setting value
Approx. 40 ms
Approx. 30 ms
Binary Input Approx. 20 ms
Dropout times:
Current (phase quantities) < 20 ms
Current (symmetrical components) < 30 ms
Binary Input < 10 ms