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3 Mounting and Commissioning
3.3.10 Testing User-defined Functions
The device has a vast capability for allowing functions to be defined by the user, es-
pecially with the CFC logic. Any special function or logic added to the device must be
checked.
A general procedure cannot in the nature of things be specified. Configuration of these
functions and the set value conditions must be actually known beforehand and tested.
Especially, possible interlocking conditions of the switching devices (circuit breakers,
isolators, grounding electrodes) must be observed and checked.
3.3.11 Trip and Close Test with the Circuit Breaker
The circuit breaker and tripping circuits can be conveniently tested by the device
7SD610.
The procedure is described in detail in the SIPROTEC 4 System Description.
If the check does not produce the expected results, the cause may be established from
the text in the display of the device or the PC. If necessary, the connections of the
circuit breaker auxiliary contacts must be checked:
It must be noted that the binary inputs used for the circuit breaker auxiliary contacts
must be assigned separately for the CB test. This means it is not sufficient that the
auxiliary contacts are allocated to the binary inputs No. 351 to 353, 379 and 380 (ac-
cording to the possibilities of the auxiliary contacts); additionally, the corresponding
No. 366 to 368 or 410 and/or 411 must be allocated (according to the possibilities of
the auxiliary contacts). In the CB test only the latter ones are analyzed. See also
Section 2.16.2. Furthermore, the ready state of the circuit breaker for the CB test must
be indicated to the binary input with No. 371.
3.3.12 Trip / Close Tests for the Configured Operating Devices
Control by Local
If the configured operating devices were not switched sufficiently in the hardware test
Command
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 using 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 in correspondence with the source of commands used.
With the switching mode, you can choose between locked and unlocked switching. In
this case, you must be aware that unlocked switching is a safety risk.
Switching from a
If the device is connected to a remote substation via a system (SCADA) interface, the
Remote Control
corresponding switching tests may also be checked from the substation. Please also
Centre
take into consideration that the switching authority is set in correspondence with the
source of commands used.
316
7SD610 Manual
C53000-G1176-C145-4
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