Specifications

Line Differential Protection SIPROTEC 7SD80
3/10 SIPROTEC Compact · SIEMENS SIP 3.01 · Edition 3
I>
7SJ80
Station A
Infeed
7SD80
˂,
7SD80
˂,
Protection Data Interface
I>
7SJ80
7SD80
˂,
7SD80
˂,
Protection Data Interface
G
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3_6_Bild-003-us.pdf
Applications examples
Parallel feeder
Parallel feeders with bidirectional
power fl ow can be ideally protected
with the line differential protection
SIPROTEC 7SD80.
As a difference to the alternative
concept of the direction comparison
protection, SIPROTEC 7SD80 does not
require voltage transformers.
The communication connection
required in each case only leads to
instantaneous, strictly selective trip-
ping when the differential protection
is used
In addition, the shorter fault clea-
rance time prevents damage to the
generators at the opposite end.
Bild 3/6 Protection of parallel feeders via SIPROTEC 7SD80
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