Breaker Control; Control Device; Description - Siemens SIPROTEC 7SJ62 Manual

Functions

2.25 Breaker Control

2.25 Breaker Control
A control command process is integrated in the SIPROTEC 4 device 7SJ62/64 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.
2.25.1

Control Device

Devices with integrated or detached operator panel can control switchgear via the operator panel of the device.
In addition, control can be executed via the operator interface using a personal computer and via the serial in-
terface with a link to the substation control equipment.
Applications
• Switchgears with single and double busbars
Prerequisites
The number of switchgear devices to be controlled is limited by the
– binary inputs present
– binary outputs present

2.25.1.1 Description

Operation Using the Keypad with Text Display
Using the navigation keys ▲, ▼, , , the control menu can be accessed and the switching device to be operated
can be selected. After having entered a password, a new window is displayed in which multiple control actions
(e.g. close, open, cancel) are available and can be selected using the ▼ and ▲ keys. Thereafter, a query appears
for security reasons. After the security check has been completed, the E
carry out the command. If this release does not occur within one minute, the process is aborted. Cancellation
via the E
SC key is possible at any time before the control command is issued.
378
NTER key must be pressed again to
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008