Deif PPM 300 - Synchronisation Check, Including Blackout Close (ANSI 25)

3.4.21 Synchronisation check, including blackout close (ANSI 25)
Protection IEC symbol (IEC60617) ANSI (IEEE C37.2) IEC 61850 Operate time
Synchronisation check (including blackout close) - 25 RSYN -
For all breakers under power management system (PMS) control, the sync check ensures
that the voltages, frequencies, and phase angles are within the allowed limits before the
controller closes the breaker.
The synchronisation check includes blackout close. That is, if equipment is trying to close a
breaker to a busbar that does not have voltage, the breaker is allowed to close without
synchronisation.
The check is based on the frequency difference, the voltage difference, and the phase
angle across the breaker, as measured by the controller.
The synchronisation check does not have an alarm or inhibits. However, if the controller
cannot synchronise within the time allowed, there will be a sync failure alarm.
time
L1
L3
L2
Frequency
[Hz]
Voltage
[V]
Phase
angle [°]
The synchronisation check is based on the parameters under Configure > Parameters > Breakers > [Breaker] configuration >
Synchronisation setting.
More information
See Power management, Blackout for more information about blackout closing.
3.5 Busbar AC protections
3.5.1 [Busbar] over-voltage (ANSI 59)
Protection
IEC symbol (IEC60617) ANSI (IEEE C37.2) IEC 61850 Operate time
Over-voltage U>, U>> 59 PTOV < 50 ms
The alarm response is based on the highest phase-to-phase voltage, or the highest phase-to-
neutral voltage, from the busbar, as measured by the controller. For the BUS TIE breaker
controller, these voltages are measured on busbar B.
Set
point
Value
time
Delay
Configure the parameters under
Configure > Parameters > [Busbar] > Voltage protections > Over-voltage #, where # is 1 or 2.
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