ABB RELION REB500 Technical Manual page 131

1MRK 505 406-UEN B
Choosing the operating mode of the synchrocheck function ('Operat.-
Mode')
Basically, an enable signal will always be issued, if the conditions for synchronism (dU, dPh and
df) are fulfilled for the prescribed period and both systems, that is, busbar and line, are
energized (voltage >
In cases where closure of the circuit-breaker should also be enabled when one system is de-
energized (voltage <
achieved by appropriately setting the parameter
Table 85: Setting of Operat.-Mode
Operat.-Mode
Only SyncChk
BusD & LineL
BusL & LineD
BusD XOR LineD
BusD & LineD
BusD OR LineD
BusD
LineD
Remote operating mode selection
Four of the five operating modes can be selected by external signals applied to two of the
function's binary inputs (
Table 86: Operating modes selected by external signals
Binary input signals
OpModeInp1
(F) FALSE
(F) FALSE
(T) TRUE
(T) TRUE
Choice of phase for the voltage inputs on the busbar and line sides
(uBusInp-Ph, uLineInp-Ph)
The phase voltage (
entered separately for busbar and line inputs (to facilitate individual adjustment of phase-
angle and amplitude).
All single and three-phase voltages are available for line voltage setting (1ph L1L2, L2L3 or L3L1;
1ph L1E, L2E or L3E; 3ph Y; 3ph Δ) and all single-phase voltages for bus voltage setting
(1ph L1L2, L2L3 or L3L1; 1ph L1E, L2E or L3E), but the ones chosen must agree with the setting
for the corresponding input channels (see
Where both busbar inputs are in use, the definition of the phase ('uBusInp-Ph') applies to both
busbars.
Bay protection functions REB500
Technical manual
minVoltage ).
maxVoltage ), for example, connection of a radial feeder, this can be
Closure enabled when:
Synchronism conditions fulfilled AND (busbar > minVoltage AND line >
minVoltage)
Only SyncChk OR (busbar < maxVoltage AND line > minVoltage)
Only SyncChck OR (busbar > minVoltage AND line < maxVoltage)
Only SyncChk OR (busbar < maxVoltage AND line > minVoltage) OR (busbar
> minVoltage AND line < maxVoltage)
Only SyncChk OR (busbar < maxVoltage AND line < maxVoltage)
Only SyncChk OR (busbar < maxVoltage OR line < maxVoltage)
Only SyncChk OR busbar < maxVoltage)
Only SyncChk OR line < maxVoltage)
OpModeInp1 and OpModeInp2 ).
OpModeInp2
(F) FALSE
(T) TRUE
(F) FALSE
(T) TRUE
uBusInp-Ph , uLineInp-Ph ) to be used for determining synchronism can be
Section
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Operat.-Mode :
Operating-Mode
Mode specified in the control program (
Synchrocheck OR (bus dead AND line live)
Synchrocheck OR (bus live AND line dead)
Synchrocheck OR (bus dead AND line live) OR (bus live
AND line dead)
5.7.4).
Section 5
Bay protection functions
Operat.-Mode )
125