Specifications

Overcurrent Protection SIPROTEC 7SJ80
4/29SIPROTEC Compact · SIEMENS SIP 3.01 · Edition 3
Connection examples
Fig. 4/30 Measuring of the busbar voltage and the outgoing feeder
voltage for synchronization
A
B
C
E9
E11
E12
E14
E13
VSyn
B
B
b
b
B
b
A
a
VC-B
VA-B
A
A
a
a
k
l
IA
K
L
IB
IC
ABC
F2F1
F4F3
F8F7
IN
SIPROTEC
Surface-/Flush Mounting Housing
F8F5
52 52 52
Connection for the synchrocheck
function
If no directional earth-fault protection
is used, connection can be done with
just two phase current transformers.
For the directional phase short-circuit
protection, the phase-to-phase
voltages acquired with two primary
transformers are suffi cient.
4_30_LSA4858-en.pdf
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