Busbar Differential Protection - Siemens SIPROTEC 5 7SS85 Technical Data Manual

11.3

Busbar Differential Protection

General Differential Protection Setting Values
Rated object current I
Check Zone Setting Values
Threshold value I
Threshold value I
Threshold value I
Threshold value I
CBFP)
Stabilization factor k
General Busbar Section Setting Values
Threshold value I
Threshold value I
Threshold value I
Threshold value I
CBFP)
Stabilization factor k
Setting Values for Differential-Current Supervision
Current limiting value I/I
(I = Rated-current object)
rated,obj.
Time delay
for check zone and busbar-selective protection
Setting Values for Cross Stabilization
Restraint current ratio, selective zones
Restraint current ratio, check zone
Operate Time
Minimum operate time
Delay for signal transmission via communication (for
example, GOOSE)
Delay for SMV transmission
Frequency
Frequency range
SIPROTEC 5, Low-Impedance Busbar Protection, Manual
C53000-G5040-C019-C, Edition 04.2021
rated obj.
diff
(sensitive characteristic curve)
diff
(sensitive characteristic curve)
restr.
(sensitive characteristic curve/
restr.
diff
(sensitive characteristic curve)
diff
(sensitive characteristic curve)
restr.
(sensitive characteristic curve/
restr.
rated,obj.
11.3 Busbar Differential Protection
100 A to 50000 A
0.20 to 4.00
0.05 to 4.00
0.00 to 25.00
0.00 to 25.00
0.10 to 0.80
0.20 to 4.00
0.05 to 4.00
0.00 to 25.00
0.00 to 25.00
0.10 to 0.80
0.05 to 0.80
1.00 s to 10.00 s
0.00 to 1.00
0.00 to 1.00
Fast relay (type F) 8 ms (-1 ms/+ 4 ms)
Approx. 3 ms
Approx. 1 ms
50 Hz or 60 Hz
Technical Data
Increments of 1
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
Increments of 0.01
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