Switching Test For Configured Equipment; Creating A Test Fault Record - Siemens 7SC80 Manual

Switching Test for Configured Equipment

3.3.14
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 according to the command source used. The switching mode can be selected from interlocked and nonin-
terlocked switching. Please note that non-interlocked switching can be a safety hazard.
Control by Protective Functions
For OPEN-commands sent to the circuit breaker please take into consideration that if the internal or external
automatic reclosure function is used a TRIP-CLOSE test cycle is initiated.
!
DANGER
A test cycle successfully started by the automatic reclosure function can lead to the closing of the
circuit breaker !
Non-observance of the following statement will result in death, severe personal injury or substantial
property damage.
Be fully aware that OPEN-commands sent to the circuit breaker can result in a trip-close-trip event of
²
the circuit breaker by an external reclosing device.
Control from a Remote Control Center
If the device is connected to a remote substation via a system 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.

Creating A Test Fault Record

3.3.15
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 7SC80 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,
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
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
>Trig.Wave.Cap. must be allocated to a
Figure 3-35).
Mounting and Commissioning
3.3 Commissioning
495