ABB Relion REQ650, Руководство по применению

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auxiliary contacts, the right voltages for the synchronizing, synchrocheck and
energizing check functions can be selected.
Available voltage selection types are for single circuit breaker with double busbars
and the 1½ circuit breaker arrangement. A double circuit breaker arrangement and
single circuit breaker 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
functions available in the IED.
10.1.2.5 External fuse failure
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 function is blocked.
The UB1OK/UB2OK and UB1FF/UB2FF inputs are related to the busbar voltage and
the ULN1OK/ULN2OK and ULN1FF/ULN2FF inputs are related to the line voltage.
External selection of energizing direction
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
82 . Selected names are just examples but note that the symbol on the local HMI
can only show the active position of the virtual selector.
Section 10
1MRK 505 291-UEN A
Control
188
Application manual