Specifications

Generator and Motor Protection SIPROTEC 7SK81
7/21SIPROTEC Compact · SIEMENS SIP 3.01 · Edition 3
for Low-Power CT and VT Applications - Connection diagrams
D7
D8
BI7
D5
D6
BI6
D3
D4
BI5
D1
D2
BI4
C7
C8
BI3
C5
C6
BI2
C3
C4
BI1
C1
C2
=
=
(~)
+
-
Power Supply
B
Grounding on the case
Interference Suppression Capacitors at the Relay Contacts, Ceramic, 2.2 nF, 250 V
A
USB-DIGSI-Interface
Port B
e.g. System interface
Port A
Ethernet interface
11C1OB
C9
C10
41C2OB
C13
C12
Life Contact
E10
E8
E7
F4
F3
F2
F1
IA
IC
IN, INS
IB
VA-N
VB-N
VC-N
E1
E2
BO3
E3
E4
BO4
E5
E6
BO5
D9
D10
BO6
D11
D12
BO7
D13
D14
BO8
Fig. 7/22 Motor protection SIPROTEC 7SK814
Visio-Figure-17-us.pdf
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