Siemens siprotec SJ62 User Manual page 295

2 Functions
Power System Data
293
Address 6x02SyncCB is used to select the switchgear component to which the syn-
chronizing settings will be applied. Select the option none to use the function as ex-
ternal synchronizing feature. It will then be triggered via binary input messages.
Addresses 6x03Vmin and 6x04Vmax set the upper and lower limits for the operating
voltage range V1 or V2 and thus determine the operating range for the synchronizing
function. If the values leave this band, a message will be output.
Address 6x05 V< indicates the voltage threshold below which the feeder or the busbar
can safely be considered switched off (for checking a de-energized feeder or busbar).
Address 6x06V> indicates the voltage threshold above which the feeder or busbar
can safely be considered energized (for checking an energized feeder or busbar). It
must be set below the anticipated operational undervoltage.
The setting for the voltage values mentioned above is made secondary in volts. When
using the PC and DIGSI for configuration, these values can also be entered as primary
values. Depending on the connection of the voltages these are phase-to-ground volt-
ages or phase-to-phase voltages.
Addresses 6x07 to 6x10 are set to specify the release conditions for the closing check.
Where:
6x07 SYNC V1<V2> = Component V
energized (connection to reference without voltage, dead line);
6x08 SYNC V1>V2< = Component V
must be de-energized (connection to feeder without voltage, dead bus);
6x09 SYNC V1<V2< = Component V
nection when reference and feeder are de-energized, dead bus/dead bus);
6x10A Direct CO = Command is released without checks.
The possible release conditions are independent of each other and can be combined.
It is obviously not reasonable to combine Direct CO with other release conditions.
Parameter TSUP VOLTAGE (address 6x11A) can be set to configure a monitoring time
which requires above stated release conditions to be present for at least de-energized
switching before switching is allowed. The preset value of 0.1 s accounts for transient
responses and can be applied without modification.
Release via synchronous check can be limited to a configurable synchronous moni-
toring time T-SYN. DURATION (address 6x12). The configured conditions must be
fulfilled within this time. Otherwise release is not granted and the synchronizing func-
tion is terminated. If this time is set to ∞, the conditions will be checked until they are
fulfilled.
For special applications (e.g. connecting a ground switch), the closing release under
satisfied synchronism conditions can be activated or deactivated in parameter 6x13A
25 Synchron.
The power system data for the synchronizing function are set at addresses 6x20 to
6x25.
The circuit breaker closing time T-CB close at address 6x20 is required if the device
is to close also under asynchronous system conditions, no matter whether for manual
closing, for automatic reclosing after three-pole tripping, or for both. The device will
then calculate the time for the close command such that the voltages are synchronous
the instant the breaker poles make contact. Please note that this should include the
operating time of the breaker as well as the operating time of an auxiliary relay that
may be connected in the closing circuit.
must be de-energized, component V
1
must be energized, component V
1
and Component V must be de-energized (con-
1 2
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
must be
2
voltage value
2