Siemens SIPROTEC 4 7SJ61 - Flexible Protection Functions

Flexible Protection Functions
Measured Quantities / Modes of Operation
Three-phase
Ι, Ι
N
, Ι
Ns
, 3Ι
0
, Ι
1
, Ι
2
Single-phase
Ι, Ι
N
, Ι
Ns
Without fixed phase reference Binary Input
Measuring procedure for Ι
Fundamental wave <
True RMS value,
Positive sequence system,
Negative sequence system
Pickup on exceeding threshold value or
falling below threshold value
Setting Ranges / Increments
Pickup thresholds:
Current Ι, Ι
1
, Ι
2
, 3Ι
0
, Ι
N
for Ι
N
= 1 A
0.05 to 35.00 A Increments 0.01 A
for Ι
N
= 5 A
0.25 to 175.00 A
Relationship Ι
2
/Ι
1
15% to 100% Increments 1%
Sensitive ground currentΙ
Ns
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 Ι
2
/Ι
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
Times
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
Tolerances
Pickup thresholds:
Current
for Ι
N
= 1 A
0.5 % of set value or 10 mA
for Ι
N
= 5 A
0.5 % of set value or 50 mA
Current (symmetrical components)
for Ι
N
= 1 A
1 % of set value or 20 mA
for Ι
N
= 5 A
1 % of set value or 100 mA
4.17
Technical Data
4.17 Flexible Protection Functions
SIPROTEC 4, 7SJ61, Manual 327
C53000-G1140-C210-6, Edition 05.2016