Siemens Siprotec 5 7SS85 User Manual

Busbar Differential Protection
General Differential Protection Setting Values
Rated object current I
rated obj.
100 A to 50000 A Increments of 1
Check Zone Setting Values
Threshold value I
diff
0.20 to 4.00 Increments of 0.01
Threshold value I
diff
(sensitive characteristic curve) 0.05 to 4.00 Increments of 0.01
Threshold value I
restr.
(sensitive characteristic curve) 0.00 to 25.00 Increments of 0.01
Threshold value I
restr.
(sensitive characteristic curve/
CBFP)
0.00 to 25.00 Increments of 0.01
Stabilization factor k 0.10 to 0.80 Increments of 0.01
General Busbar Section Setting Values
Threshold value I
diff
0.20 to 4.00 Increments of 0.01
Threshold value I
diff
(sensitive characteristic curve) 0.05 to 4.00 Increments of 0.01
Threshold value I
restr.
(sensitive characteristic curve) 0.00 to 25.00 Increments of 0.01
Threshold value I
restr.
(sensitive characteristic curve/
CBFP)
0.00 to 25.00 Increments of 0.01
Stabilization factor k 0.10 to 0.80 Increments of 0.01
Setting Values for Differential-Current Supervision
Current limiting value I/I
rated,obj.
(I
rated,obj.
= Rated-current object)
0.05 to 0.80 Increments of 0.01
Time delay
for check zone and busbar-selective protection
1.00 s to 10.00 s Increments of 0.01
Setting Values for Cross Stabilization
Restraint current ratio, selective zones
0.00 to 1.00 Increments of 0.01
Restraint current ratio, check zone 0.00 to 1.00 Increments of 0.01
Operate Time
Minimum operate time
Fast relay (type F) 8 ms (-1 ms/+ 4 ms)
Delay for signal transmission via communication (for
example, GOOSE)
Approx. 3 ms
Delay for SMV transmission Approx. 1 ms
Frequency
Frequency range
50 Hz or 60 Hz
11.3
Technical Data
11.3 Busbar Differential Protection
SIPROTEC 5, Low-Impedance Busbar Protection, Manual 913
C53000-G5040-C019-C, Edition 04.2021

Siemens Siprotec 5 7SS85 Specifications

General

Brand	Siemens
Model	Siprotec 5 7SS85
Category	Industrial Equipment
Language	English