Siemens SIPROTEC 4 7VE61, Руководство пользователя

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Visual Check
Check the cubicle and the devices for damage, condition of the connections etc., and device earthing.
Wiring
It is particularly important to check the correct wiring and allocation of all device interfaces. The margin
heading “Binary Inputs and Outputs” provides additional information to this end.
For analog inputs a plausibility check can be controlled as described above under the margin title “Secondary
Checks”
Secondary Check of the Synchronization Function
To minimize the cost at the primary check, a secondary check is recommended. This test has as main purpose
to prove the proper wiring including allocation and to prove the main function for the single synchronizers. In
association with the test equipment Omicron CMC 56 for manual and automatic test, the software module
"paralleling device" can be used as software test for example. The tests are supported by the software of the
device. Here are also very important the operational measured values, the event puffer entry, the fault record
function and the Web browser.
The following test steps are recommended:
•
Control of the voltage connections (anti-parallel connection of Ua and Ub or Ud and Ue, as well as the
right phase rotation; the faults show the operational measured values or the operational indication
buffer, an exception is the one-phase synchrocheck)
•
Proper allocation and wiring of the CLOSE commands (these must be strictly configured to the relays R1
(BO1) and R2 (BO2), an exception is the single-phase synchrocheck)
•
Proper allocation and wiring of the synchronization groups (control of the binary inputs including the
pickup thresholds)
•
Proper allocation and wiring of the start and stop commands
•
Proper allocation and wiring of the circuit breaker for the voltage transformer (they can operate to a
binary input)
•
Proper allocation and wiring of the voltage and frequency control output (checking of the direction
adjustment)
•
Proper allocation and wiring of the remaining binary information according to the project ( for example,
running, stopped, CLOSE command as annunciation, synchronization test via binary inputs and others)
•
Checking the allocation on LED
•
Synchronization test for the individual synchronization groups (checking of the proper functions
including the settings parameters, the control of the direction adjustment for voltage and frequency, the
annunciations and the synchronization record can be used for the documentation)
•
Project-specific tests such as analog outputs, serial interface (if it must be controlled via these) and others
( please refer also to the following instructions)
Secondary Checks of the Protective Functions
The only functional test required for protective relays is a plausibility check of the operational measured values
by means of some secondary test equipment; this is to ensure that no damage has occurred during transport.
A possible three-phase test equipment is recommended for the secondary checks (e.g. Omicron CMC 56 for
manual and automatic checking).
The measurement accuracy to be achieved depends on the electrical data of the test sources used. The accura-
cies specified in the technical specifications can be expected only if the reference conditions in accordance
with VDE 0435/Part 303 or IEC 60255 are adhered to, and precision measurement instruments are used.
Tests can be done with the current setting values or with the preset values.
Mounting and Commissioning
3.2 Checking Connections
166 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017