Siemens SIPROTEC 4 7SD80, Manual

Page: 245 / 416

Furthermore, the ready state of the circuit breaker for the CB test must be indicated to the binary input with
FNo. 371.
Switching Check for the Configured Equipment
Switching via Command Input
If the configured equipment was not switched sufficiently in the hardware test already described, configured
equipment must be switched on and off from the device via the integrated control element. The feedback
information on the circuit breaker position injected via binary inputs is to be read out at the device and
compared with the actual breaker position.
The switching procedure is described in the SIPROTEC 4 System Description. The switching authority must be
set in correspondence with the source of commands used. With the switch mode it is possible to select
between interlocked and non-interlocked switching. Note that non-interlocked switching constitutes a safety
risk.
Switching from a Remote Control Center
If the device is connected to a remote substation via a system (SCADA) interface, the corresponding switching
tests may also be checked from the substation. Please also take into consideration that the switching authority
is set in correspondence with the source of commands used.
Triggering Oscillographic Recording for Test
In order to test the stability of the protection during switch-on procedures also, switch-on trials can also be
carried out at the end. Oscillographic records obtain the maximum information about the behavior of the
protection.
Prerequisite
Along with the possibility of storing fault records via pickup of the protection function, the 7SD80 also has the
capability of capturing the same data when commands are given to the device via the operating program
DIGSI, the serial interface, or via binary input. In the latter case,
>Trig.Wave.Cap.
must be allocated to a
binary input. The recording is then triggered, e.g. via binary input when the protected object is energized.
An oscillographic recording that is externally triggered (that is, without a protective element pickup or device
trip) is processed by the device as a normal oscillographic recording, and has a number for establishing a
sequence. However, these recordings are not displayed in the fault indication buffer, as they are not fault
events.
Starting Test Fault Recording
In order to start a test fault record via DIGSI, select the Test function in the left part of the window. Double-
click the entry Test Wave Form in the list view (see
Figure 3-32 ).
3.3.13
3.3.14
Mounting and Commissioning
3.3 Commissioning
SIPROTEC 4, 7SD80, Manual 245
E50417-G1100-C474-A2, Edition 02.2018