Siemens SIPROTEC 4 7SD80 User Manual

[logikdiagramm-frequenzschutz-wlk-190802, 1, en_US]
Figure 2-52
Logic diagram of frequency protection for 50 Hz rated frequency
Setting Notes
General
Frequency protection is only in effect and accessible if address 136 81 O/U is set to Enabled during configu-
ration of protective functions. If the function is not required, set Disabled.
The frequency protection function features 4 frequency elements f1 to f4 each of which can function as over-
frequency element or underfrequency element. Each zone can be set active or inactive. This is set in
addresses:
•
3601 81 O/U FREQ. f1 for frequency element f1,
•
3611 81 O/U FREQ. f2 for frequency element f2,
•
3621 81 O/U FREQ. f3 for frequency element f3,
•
3631 81 O/U FREQ. f4 for frequency element f4.
The following 3 options are available:
2.9.2
Functions
2.9 Frequency Protection (optional) 81
SIPROTEC 4, 7SD80, Manual 125
E50417-G1100-C474-A2, Edition 02.2018

Siemens SIPROTEC 4 7SD80 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SD80
Category	Power distribution unit
Language	English