ABB RELION 650 SERIES, Applications Manual

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with a single busbar do not need any voltage selection function. Neither does a single circuit
breaker with double busbars using external voltage selection need any internal voltage selection.
The voltages from busbars and lines must be physically connected to the voltage inputs in the IED
and connected, using the control software, to each of the SESRSYN (25) functions available in the
IED.
10.1.2.5 External fuse failure
M12322-3 v9
Either external fuse-failure signals or signals from a tripped fuse (or miniature circuit breaker) are
connected to HW binary inputs of the IED; these signals are connected to inputs of SESRSYN
function in the application configuration tool of PCM600. The internal fuse failure supervision
function can also be used, for at least the line voltage supply. The signal BLKU, from the internal
fuse failure supervision function, is then used and connected to the fuse supervision inputs of the
energizing check function block. In case of a fuse failure, the SESRSYN energizing (25) function is
blocked.
The VB1OK/VB2OK and VB1FF/VB2FF inputs are related to the busbar voltage and the VL1OK/
VL2OK and VL1FF/VL2FF inputs are related to the line voltage.
External selection of energizing direction
M12322-10 v6
The energizing can be selected by use of the available logic function blocks. Below is an example
where the choice of mode is done from a symbol on the local HMI through selector switch function
block, but alternatively there can for example, be a physical selector switch on the front of the
panel which is connected to a binary to integer function block (B16I).
If the PSTO input is used, connected to the Local-Remote switch on the local HMI, the choice can
also be from the station HMI system, typically ABB Microscada through IEC 61850–8–1
communication.
The connection example for selection of the manual energizing mode is shown in figure 44 .
Selected names are just examples but note that the symbol on the local HMI can only show the
active position of the virtual selector.
1MRK 505 287-UUS B Section 10
Control
Busbar protection REB650 119
Application manual
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