Function
Range or value
Accuracy
Time after position change
before the value is accepted
(1–60) s
± 0.5% ± 110 ms
Tap changer constant time-
out
(1–120) s
± 0.5% ± 110 ms
Raise/lower command output
pulse duration
(0.5–10.0) s
± 0.5% ± 110 ms
12.4
Logic rotating switch for function selection and LHMI
presentation SLGGIO
12.4.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Logic rotating switch for function
selection and LHMI presentation
SLGGIO
-
-
12.4.2
Functionality
The logic rotating switch for function selection and LHMI presentation SLGGIO (or
the selector switch function block) is used to get an enhanced selector switch
functionality compared to the one provided by a hardware selector switch. Hardware
selector switches are used extensively by utilities, in order to have different functions
operating on pre-set values. Hardware switches are however sources for maintenance
issues, lower system reliability and an extended purchase portfolio. The logic selector
switches eliminate all these problems.
Section 12
1MRK 504 135-UEN A
Control
352
Technical manual
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