The Trip button will issue Ganged Trip control to all Fusesavers on the line. The Close button will
issue a Ganged Close control to all Fusesavers on the line.
A Ganged Trip or Ganged Close will command all Fusesavers on the line to Trip/Close only if
communications are normal to each and every Fusesaver. If communications have failed to any
Fusesaver then no trip/close command will be sent to any Fusesaver.
Once a Trip or Close control is issued to the Fusesavers the corresponding status LEDs will begin
to flash. (i.e. a Trip control in progress will flash Trip LEDs). The Trip/Close status LEDs flash in
conjunction with Control In Progress LED to indicate which control is currently in progress. The status
LEDs will stop flashing when the control in progress has finished.
It is possible to issue controls to Fusesavers that are already in the required state, e.g. sending a
trip control to Fusesavers that are already open. In this scenario the RCU will still send the control
to the Fusesavers. The control in progress LEDs will begin to flash but will stop soon after as the
Fusesavers are already in the desired state. The benefit of this is, for example, if two phases are
tripped and one is closed, pressing the Trip control will open the closed Fusesaver and bring the
phases to the same state. If independent trip/close control of Fusesavers is required it is necessary
to use the Siemens Connect PC application (refer to Fusesaver Operating Instructions KMS-0017)
8.2.6 Protection Mode
The Fusesaver Protection Mode Status indicates the currently active “protection modes” for each
phase of the Fusesaver Line.
If no LED is lit for a protection mode on a phase this means there is No Data available for that phase.
The Fusesaver Control Panel Protection Controls are ganged controls which will command all
Fusesavers on the line to change a protection mode only if communications are normal to each and
every Fusesaver. If communications have failed to any Fusesaver then no protection mode change
command will be sent to any Fusesaver.
Once a Protection control is issued to the Fusesavers the corresponding status LEDs will begin to
flash, e.g. a FAST-SINGLE control in progress will flash the FAST-SINGLE LED and the Control In
Progress LED. The status LEDs will stop flashing when the control in progress has finished, see
Control in Progress Indicator above.
It is possible to issue controls to Fusesavers that are already in the control state, e.g. sending a
FAST-SINGLE control to Fusesavers that are already in FAST-SINGLE mode. In this scenario the
RCU will still send the control to the Fusesavers. The control in progress LED will begin to flash but
will stop soon after as the Fusesavers are already in the desired state.
8.2.7 Fusesaver Health
The Fusesaver Health LED indicate the operational health for each phase on the line. A Fusesaver’s
Health can be OK, PROBLEM or No Data if no data is available for that phase.
A Fusesaver Health is deemed to be OK if ALL of the following conditions are met:
The Phase is correctly configured.
Communications to the Fusesaver is healthy.
The Fusesaver Communications Module battery life is not low.
The Fusesaver VI is not worn out.
The Fusesaver does not have a mechanism fault.
A Fusesaver is deemed to have a PROBLEM if ANY of the following conditions are met.
There is a communications problem to the Fusesaver.
There is a problem with the Fusesaver configuration (RCU Switchgear Problem LED will also be
red).
The Fusesaver Communications Module battery life is low.
The Fusesaver VI is worn out.
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