Siemens SIPROTEC 7SJ80 User Manual

[flexfkn-einstellungen-allgemein-3phasig-030204-he, 1, en_US]
Figure 2-108 Selection of the three-phase operating mode
In menu items “Measured Value” and “Measurement Procedures” “Active Power reverse”“ or “Exceeding” must
be set. If in menu item „Settings“ the box „Additional Parameters display“ is enabled, threshold value, pickup
delay time and trip delay time can be configured. As the power direction cannot be determined in case of
measured voltage failure, protection blocking would be sensible in this case.
[flexfkn-einstellungen-5-watt-030204-he, 1, en_US]
Figure 2-109 Setting options of the flexible function
Allocating the Reverse-Power Protection in DIGSI Configuration Matrix
The DIGSI configuration matrix initially shows the following indications (after selecting “Indications and
commands only” and “No filter”.
Functions
2.19 Reverse-Power Protection Application with Flexible Protection Function
SIPROTEC 4, 7SJ80, Manual 259
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