Siemens siprotec 7SA522 User Manual

2 Functions
366
7SA522 Manual
C53000-G1176-C155-3
Figure 2-163 Standard interlockings
1) Source of Command REMOTE includes LOCAL.
LOCAL command using substation controller
REMOTE Command using remote source such as SCADA through controller to device
The device display shows the configured interlocking reasons. The are marked by
letters explained in 2-18.
Table 2-18 Interlocking Commands
Figure 2-164 shows all interlocking conditions (which usually appear in the display of
the device) for three switchgear items with the relevant abbreviations explained in
Table 2-18. All parametrized interlocking conditions are shown.
Interlocking Commands Command Display
Switching Authority L L
System interlocking S S
Bay Interlocking Z Z
SET = ACTUAL (switch direction check) P P
Protection Blockage B B

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English