Siemens SIPROTEC 4 7UT6 Series Manual page 306

Functions
2.24 Command Processing
[standardveriegelungen-wlk-020802, 1, en_GB]
Figure 2-130
1) Source of Command REMOTE includes LOCAL.
(NAH Command using substation controller
FERN Command via telecontrol station to power system management and from power system manage-
ment to the device)
The display shows the configured interlocking reasons. They are marked by letters as explained in
Table 2-19
Interlocking Commands
Control Authority
System Interlocking
Bay Interlocking
SET = ACTUAL (switch direction check)
Protection Blockage
Figure 2-131 shows all interlocking conditions (which usually appear in the display of the device) for three
switchgear items with the relevant abbreviations explained in Table .
parameterized interlocking conditions are indicated.
306
Standard interlockings
Interlocking Commands
Command (abbrevia-
tion)
SV
AV
BI
SΙ
SB
Table 2-19
Table 2-19
Display
S
A
F
Ι
B
explained abbreviations. All
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
.