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Functions
2.18 Breaker Control
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
214
2.18
Breaker Control
A control command process is integrated in the SIPROTEC 4 device 7SD80 to coordinate the operation of
circuit breakers and other equipment in the power system.
Control commands can originate from four command sources:
• Local operation using the keypad of the device (except for variant without operator panel)
• Operation using DIGSI
• Remote operation via network control center or substation controller (e.g. SICAM)
• Automatic functions (e.g., using a binary input)
Switchgear with single and multiple busbars are supported. The number of switchgear devices to be controlled
is, basically, limited by the number of binary inputs and outputs present. High security against inadvertent
device operations can be ensured if interlocking checks are enabled. A standard set of optional interlocking
checks is provided for each command issued to circuit breakers/switchgear.
2.18.1
Control Device
Switchgear can also be controlled via the device's operator panel, DIGSI or a connection to the substation
control equipment.
Prerequisites
The number of switchgear devices to be controlled is limited by the
– existing binary inputs
– existing binary outputs.
2.18.1.1 Description
Operation Using the Device's Operator Panel
For controlling the device, there are two independent colored keys located below the graphic display. If you are
somewhere in the menu system outside the control submenu, you can return to the control mode via one of
these keys.
Then, select the switchgear to be operated with the help of the navigation keys. The switching direction is de-
termined by operating the
I
or
O
pushbutton. The selected switching direction is displayed flashing in the
bottom line of the following security prompt.
Password and security prompts prevent unintended switching operations. With
E
NTER
the entries are confirmed.
Cancellation is possible at any time before the control command is issued or during switch selection via the
E
SC
key.
Command end, feedback or any violation of the interlocking conditions are indicated.
For further information on the device operation, please refer to Chapter 2.19.
Operation using DIGSI
Switchgear can be controlled via the operator control interface with a PC using the DIGSI software. The pro-
cedure to do so is described in the SIPROTEC 4 System Description (Control of Switchgear).