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Control of Fusesaver
The FS has multiple sources of control for
tripping, closing and changing protection
mode as follows:
Trip/close levers on the communications
module (refer to FS operating
instructions IC1000-F320-A170-XX-
XXXX for more details).
Siemens Connect utility running on a PC
equipped with an USB antenna module
(refer to FS operating instructions
IC1000-F320-A170-XX-XXXX for more
details).
SCADA operator via the RCU.
Operator control panel, if fitted to the
RCU.
Controls generated from the RCU itself
based upon condition criteria.
This section provides details on the
protection mode functionality that is
possible via the RCU and the various means
by which these controls can be asserted.
Methods of asserting controls
SCADA operator controls
The purpose of the RCU is to allow a remote
operator to connect through the RCU to the
Fusesavers to receive events and to apply
controls. The availability of these events and
controls is determined by the type and
implementation to the utility SCADA system.
Refer to the relevant protocol manual for
information on the event types and controls
supported by the RCU for your protocol. It is
the user's responsibility to engineer the
SCADA interface required to manage RCUs
in the field.
The SCADA control center will be able to
perform the following functions:
1. View RCU status and event information.
2. Issue trip and close commands to the
Fusesavers via the RCU. The RCU must
have remote control switch set to ON for
this to be possible.
3. Change protection modes in the FS via
the RCU. RCU must have remote control
switch set to ON for this to be possible.
4. Issue a command to the FS to force the
protection to be armed regardless of
whether there is adequate line current
to power the Fusesavers as in the normal
operation. The protection will remain
armed until a command to disable the
forced arming is received or a time limit
that is set by the FS policy file is set.
Control by the SCADA operator of Fusesaver
trip, close, protection mode and forced
protection arming is enabled when the
remote control switch is ON and disabled
when the remote control switch is OFF.
It is possible to configure the RCU so that
SCADA trip is always accepted, refer to
"Always Allow Trip" setting in the relevant
protocol manual.
SCADA control of the Fusesaver dummy
control is always allowed.
Fusesaver operator control panel controls
Control by the Fusesaver control panel (refer
page 12) for Fusesaver trip, close and
protection mode is enabled when the
remote control switch is OFF and disabled
when the remote control switch is ON;
however it is possible to configure the RCU
so that the operator control panel is always
able to control the Fusesaver irrespective of
the remote control switch. This is detailed in
Fusesaver operator control panel settings on
page 69.
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