General settings
Operation
: The operation mode can be set
On
or
Off
. The setting
Off
disables the whole
function.
GblBaseSelBus
and
GblBaseSelLine
These configuration settings are used for selecting one of twelve GBASVAL functions, which
then is used as base value reference voltage, for bus and line respectively.
SelPhaseBus1
and
SelPhaseBus2
Configuration parameters for selecting the measuring phase of the voltage for busbar 1 and 2
respectively, which can be a single-phase (phase-neutral), two-phase (phase-phase) or a
positive sequence voltage.
SelPhaseLine1
and
SelPhaseLine2
Configuration parameters for selecting the measuring phase of the voltage for line 1 and 2
respectively, which can be a single-phase (phase-neutral), two-phase (phase-phase) or a
positive sequence voltage.
CBConfig
This configuration setting is used to define type of voltage selection. Type of voltage selection
can be selected as:
• no voltage selection,
No voltage sel.
• single circuit breaker with double bus,
Double bus
• 1 1/2 circuit breaker arrangement with the breaker connected to busbar 1,
1 1/2 bus CB
• 1 1/2 circuit breaker arrangement with the breaker connected to busbar 2,
1 1/2 bus alt. CB
• 1 1/2 circuit breaker arrangement with the breaker connected to line 1 and 2,
Tie CB
PhaseShift
This setting is used to compensate the phase shift between the measured bus voltage and line
voltage when:
• different phase-neutral voltages are selected (for example UL1 for bus and UL2 for line);
• one available voltage is phase-phase and the other one is phase-neutral (for example
UL1L2 for bus and UL1 for line).
The set value is added to the measured line phase angle. The bus voltage is reference voltage.
Synchronizing settings
OperationSynch
The setting
Off
disables the Synchronizing function. With the setting
On
, the function is in the
service mode and the output signal depends on the input conditions.
UHighBusSynch
and
UHighLineSynch
The voltage level settings shall be chosen in relation to the bus/line network voltage. The
threshold voltages
UHighBusSynch
and
UHighLineSynch
have to be set lower than the value
where the network is expected to be synchronized. A typical value is 80% of the rated voltage.
UDiffSynch
Section 12 1MRK 505 370-UEN D
Control
260 Busbar protection REB670
Application manual
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