Manual 37259C
SPM-D11 - Synchronizing Unit
© Woodward
Page 25/79
Synch-Check
In this condition, the unit can be used as a check-synchronizer. No control is carried out. The relay "Command:
CB close" remains energized, as long as the following conditions are met:
•
The configured limit for the voltage difference is met
(screen "synchronization dV
max
)
•
The configured limits for the frequency difference are met
(screen "synchronization df
max
and df
min
")
•
The configured limit for the phase angle is met
(screen "slip synchroniz. phase
max
")
•
The input "Reply: CB is open" is energized
•
The parameter "Terminal 6" is configured to "Release control"
•
The terminal 6 is not energized (the control is disabled)
•
The input "Enable isolated operation / dead bus start" is energized
•
The input "Enable CB" is energized
The synchronization time monitoring is disabled.
Isolated Operation
The generator voltage and frequency are controlled according to the configurable set point values. The generator
breaker is closed. To activate the voltage controller, the parameter "volt. controller in isol. oper." must be set to
"ON". To activate the frequency controller, the parameter "freq. controller in isol. oper." must be set to "ON".
Additionally, the discrete input "Enable isolated operation / dead bus start" must be energized to enable isolated
operation.
Closing the CB Without Synchronization (Dead Bus Start)
A close command for the power circuit breaker will be output without synchronization if the following condi-
tions are met:
•
The control is in the automatic mode (LED "Automatic" lights up)
•
The parameter "
Gen. circ.break. Dead bus op.
" has been set to "
ON
"
•
The bus bar is not energized (V
SS
< 5 % V
N
)
•
The generator voltage and frequency are within the configured limits
•
The input "Enable isolated operation / dead bus start" is energized
•
The input "Enable CB" is energized
•
The input "Reply: CB is open" is energized