Functional Description - Siemens SIPROTEC 4 Manual

Functions
2.23 Auxiliary Functions
2.23.9.1

Functional Description

Influencing Information to the Control Center During Test Mode
Some of the available protocols allow for identifying all messages and measured values transmitted to the
control center with "Test Mode" as the message cause while the device is tested on site. This identification
prevents the message from being incorrectly interpreted as resulting from an actual fault. Moreover, a trans-
mission block can be set during the test so that no messages are transferred to the control center.
This can be implemented via binary inputs, using the interface on the device front and a PC.
The SIPROTEC 4 System Description states in detail how to activate and deactivate test mode and blocked data
transmission.
Testing the Connection to a Control Center
Via the DIGSI device control it can be tested whether messages are transmitted correctly.
A dialog box shows the display texts of all messages which were allocated to the system interface (port B) in
the DIGSI matrix. In another column of the dialog box, a value for the messages to be tested can be defined
(e.g. message ON / message OFF). After having entered password no. 6 (for hardware test menus), the corre-
sponding message is issued and can be read out in the event log of the SIPROTEC 4 device and in the substa-
tion control center.
The procedure is described in detail in Chapter "Mounting and Commissioning".
Checking the Binary Inputs and Outputs
The binary inputs, outputs, and LEDs of a SIPROTEC 4 device can be individually and precisely controlled in
DIGSI. This feature can be used, for example, to verify control wiring from the device to substation equipment
(operational checks), during start-up.
A dialog box shows all binary inputs and outputs as well as LEDs of the device with their present status. The
operating equipment, commands, or messages that are configured (masked) to the hardware components are
also displayed. After having entered password no. 6 (for hardware test menus), it is possible to switch to the
opposite status in another column of the dialog box. Thus, you can energize every single output relay to check
the wiring between protected device and the system without having to create the alarm allocated to it.
The procedure is described in detail in Chapter "Mounting and Commissioning".
Creating Oscillographic Recordings for Tests
During commissioning, energization sequences should be carried out to check the stability of the protection
also during closing operations. Oscillographic event recordings contain the maximum information on the
behavior of the protection.
Along with the capability of storing fault recordings via pickup of the protection function, the 7SJ80 also has
the capability of capturing the same data when commands are given to the device via the service program
DIGSI, the serial interface, or a binary input. For the latter, event
binary input. Triggering for the oscillographic recording then occurs, for instance, via the binary input when
the protection object is energized.
An oscillographic recording that is triggered externally (that is, without a protective element pickup) are
processed by the device as a normal oscillographic record. For each oscillographic record a fault record is
created which is given its individual number to ensure that assignment can be made properly. However, these
oscillographic recordings are not displayed in the fault log buffer in the display as they are no network fault
events.
The procedure is described in detail in Chapter "Mounting and Commissioning".
298
>Trig.Wave.Cap. must be allocated to a
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017