26
1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
5.1.1.3. Control functions
The control functions are used to indicate the position of switching devices, i.e.
circuit breakers and disconnectors, and to execute open and close commands for
controllable switching devices in the switchgear. Furthermore, there are
supplementary functions for control logic purposes, e.g. on/off switches, MIMIC
alarm, LED control, numerical data for the MIMIC and logic controlled position
selection.
The control functions configured using the Relay Configuration Tool can be
associated with position indicators that are part of the MIMIC configuration picture
displayed on the HMI. Position indicators are used to indicate the position of
switching devices via the MIMIC picture and to control them locally. For more
information about the MIMIC configuration, refer to Section “MIMIC
configuration” on page 32.
The control function blocks are documented on the CD-ROM “Technical
Descriptions of Functions” (refer to “Related documents” on page 9).
MEVO3A Three-phase voltage measurement, stage A
MEVO3B Three-phase voltage measurement, stage B
Table 5.1.1.2-1 Measurement functions available for the RET 54_
Function Description
Table 5.1.1.3-1 Control functions available for the RET 54_
Function Description
CO3DC1 Three-state disconnector 1 with indication
CO3DC2 Three-state disconnector 2 with indication
COCB1 Circuit breaker 1 control with indication
COCB2 Circuit breaker 2 control with indication
COCBDIR Direct open for CBs via HMI
CODC1 Disconnector 1 control with indication
CODC2 Disconnector 2 control with indication
CODC3 Disconnector 3 control with indication
CODC4 Disconnector 4 control with indication
CODC5 Disconnector 5 control with indication
COIND1 Switching device 1 indication
COIND2 Switching device 2 indication
COIND3 Switching device 3 indication
COIND4 Switching device 4 indication
COIND5 Switching device 5 indication
COIND6 Switching device 6 indication
COIND7 Switching device 7 indication
COIND8 Switching device 8 indication
COLOCAT Logic-controlled control position selector
COLTC On-load tap changer controller (voltage regulator)
COSW1 On/off switch 1
COSW2 On/off switch 2
COSW3 On/off switch 3
COSW4 On/off switch 4
MMIALAR1 Alarm channel 1, LED indicator
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