Trip/Close Tests For The Configured Operating Devices - Siemens SIPROTEC 4 Manual

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Figure 3-23
3.3.8

Trip/Close Tests for the Configured Operating Devices

Control by Local Command
If the configured operating devices were not switched sufficiently in the hardware test already described, all
configured switching devices must be switched on and off from the device via the integrated control element.
The feedback information of the circuit breaker position injected via binary inputs is 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 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.
SIPROTEC 4, 7RW80, Manual
C53000-G1140-C233-4, Edition 07.2018
Measuring voltages for synchrocheck
Mounting and Commissioning
3.3 Commissioning
155