Siemens SIPROTEC 4, User Manual

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•
If not, first check whether one of the aforesaid messages 170.2090
25 V2>V1
or 170.2091
25 V2<V1
or 170.2094
25 α2>α1
or 170.2095
25 α2<α1
is available in the spontaneous messages.
Messages
25 V2>V1
or
25 V2<V1
indicate that the magnitude matching is incorrect. Check address
6x21 Balancing V1/V2
and recalculate the adaptation factor.
The messages
25 α2>α1
or
25 α2<α1
indicate that the phase relation of the busbar voltage does not
match the setting under address
CONNECTIONof V2
(see Section 2.21.1 SYNC Function group 1 ). When
measuring via a transformer, address
6x22 ANGLE ADJUSTM.
must also be checked. This must adapt
the vector group. If these are correct, there is probably a reverse polarity of the voltage transformer
terminals V
1
.
•
For the synchrocheck the program
SYNC V1>V2<
is set to
YES
(address
6x08
) and SYNC Function X is
set to
ASYN/SYNCHRON
(address
16x
).
•
Open the VT mcb of the busbar voltage.
•
Via binary input (170.0043
>25 Sync req.
) initiate the measuring request. There is no close release. If
there is, the VT mcb for the busbar voltage is not allocated. Check whether this is the required state,
alternatively check the binary input
>FAIL: BUS VT
(6510).
•
Close the VT mcb of the busbar voltage again.
•
Open the circuit breaker.
•
For the synchrocheck the program
SYNC V1<V2>
is set to
YES
(address
6x07
) and
SYNC V1>V2<
is set
to
NO
(address
6x08
).
•
Via binary input (170.0043
>25 Sync req.
) initiate the measuring request. The synchronism check
must release closing (message 170.0049
25 CloseRelease
). Otherwise check all voltage connections
and the corresponding parameters again carefully as described in Section 2.21.1 SYNC Function group 1 .
•
Open the VT mcb of the feeder voltage.
•
Via binary input (170.0043
>25 Sync req.
) initiate the measuring request. No close release is given.
•
Close the VT mcb of the feeder voltage again.
Addresses
6x07
to
6x10
must be restored as they were changed for the test. If the routing of the LEDs or
signal relays was changed for the test, this must also be restored.
[messspannungenzursynchronkontrolle-260602-kn, 1, en_US]
Figure 3-38 Measuring voltages for the synchro-check
Mounting and Commissioning
3.3 Commissioning
428 SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016