3.20.16 Voltage switch VMSWI (ANSI VSWI)
3.20.16.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Voltage switch VMSWI VSWI VSWI
3.20.16.2 Function block
Figure 154: Function block
3.20.16.3 Functionality
The voltage switch function VMSWI performs the switching function between up to
four voltage groups (Bus1, Bus 2, Bus 3 and Bus 4).
Residual voltage input can be optional and depends of the application
configuration. The switching operation can also be associated with the residual
voltage if available.
The calculated components U+, U- and U
0
and the calculated P2P / P2E (depending
of the wye/delta mode) are switch-controlled as well.
3.20.16.4 Analog channel configuration
VMSWI has eight analog group inputs which must be properly configured. All inputs
can be connected to GRPOFF.
Table 259: Analog inputs
Input Description
U3P1
1
Three-phase voltages
U3P2
1
Three-phase voltages
U3P3
1
Three-phase voltages
U3P4
1
Three-phase voltages
URES1
1
Residual voltage (measured or calculated)
URES2
1
Residual voltage (measured or calculated)
Table continues on the next page
1
Can be connected to GRPOFF
1MRS759142 F Basic functions
REX640
Technical Manual
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