Manual 37259C
SPM-D11 - Synchronizing Unit
© Woodward
Page 57/79
Synchronization
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Functions of Synchronization
Synchronizing
functions ON
Synchronization functions
ON/OFF
ON
................ Frequency and voltage matching for the generator and busbar is per-
formed and a close command is issued. The subsequent screens of
this function are displayed.
OFF
.............. No synchronization occurs, but no-load control functions are per-
formed if necessary. No close command is issued. The subsequent
screens of this function are not displayed.
Synchronization
df max = 0.00Hz
Max. permissible differential frequency (positive slip)
0.02 to 0.49 Hz
The prerequisite for initiating a close command that the differential frequency must
be lower than the value configured here. This value specifies the upper frequency
limit. A positive value indicates that the generator frequency is greater than the
busbar frequency.
Synchronization
df min =-0.00Hz
Max. permissible differential frequency (negative slip)
0.00 to
0.49 Hz
The prerequisite for initiating a close command that the differential frequency must
be higher than the value configured here. This value specifies the lower frequency
limit. A negative value indicates that the generator frequency is less than the busbar
frequency.
Synchronization
dV max = 00V
Max. permissible differential voltage
[1] 1 to 20 V, [4] 1 to 60 V
A close command will not be issued until the measured differential voltage of the
generator and busbar falls below the value configured here.
Synchronization
Brk.hold T>0.00s
Minimum pulse period of close relay
0.04 to 0.50 s
The length of the close command pulse can be adjusted to the requirement of the
subordinate switching circuit.