Siemens SIPROTEC 7SJ80 User Manual

[anschl-3-stromwdl-kabelumbauw-e-n-wickl-060606, 1, en_US]
Figure C-10
Transformer connections to three current transformers, cable-type current transformer and
broken delta winding, maximum precision for sensitive ground fault detection
Important! Grounding of the cable shield must be effected at the cable side
For busbar-side grounding of the current transformers, the current polarity of the device is changed via
address 0201. This also reverses the polarity of the current input IN/INs. When using a cable-type current
transformer, the connection of k and I at F8 and F7 must be exchanged.
[stromwdl-2phasenstrwdl-1erdstrwdl-080211, 1, en_US]
Figure C-11 Current transformer connections to two phase-current transformers and a ground-current
transformer; the ground current is taken via the highly sensitive and sensitive ground input.
Connection Examples
C.1 Connection Examples for Current and Voltage Transformers
SIPROTEC 4, 7SJ80, Manual 447
E50417-G1140-C343-A8, Edition 12.2017

Siemens SIPROTEC 7SJ80 Specifications

General

Rated Frequency	50/60 Hz
Rated Current	1 A / 5 A
Operating Temperature	-25°C to +55°C
Storage Temperature	-40°C to +70°C
Current Transformer Inputs	4
Application	Protection of feeders, motors, transformers, and generators
Rated Voltage	100-240 V AC/DC
Communication Protocols	IEC 61850, Modbus, DNP3, IEC 60870-5-103
Display	Graphical LCD
Mounting	Flush mounting
Protection Functions	Overcurrent, Earth fault
Communication Interfaces	Ethernet, RS485
Housing	Plastic
Weight	Approx. 1.5 kg