3.3 Commissioning
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7UM62 Manual
C53000-G1176-C149-3
3.3.10 Trip/Close Tests for Primary Equipment
Control by Local
Command
At the end of commissioning, actual 7UM62 tripping and closing should be verified for
all the relevant circuit breakers and primary switching devices, unless this has been
done already in connection with the Hardware Test described in Section 3.3.3. The
feedback of the status of the primary equipment, through the equipment’s auxiliary
contacts to the binary inputs of the 7UM62, should be checked during the testing. Be
sure the 7UM62 always indicates the true position of the equipment in the device
messages.
The procedure for the control is described in SIPROTEC
®
4–System Manual. Make
sure that the switching authority is set according to the source of commands that is
used. The switching mode can be chosen as interlocked or non-interlocked. Note that
non-interlocked switching presents safety risks.
Control from a
Remote Control
Center
If the device has a connection to a remote control center, trip/close tests should be
performed from that control center as well. Here again, make sure that the switching
authority is set according to the source of commands that is used.
