Synchronization Function
Operating Modes
Synchrocheck
Switching synchronous systems
Switching asynchronous systems
De-energized switching
Direct closing command
Setting Values
Supervision/Delay times:
Max.durat. sync.process
0.00 s to 3 600.00 s or ∞ (ineffec-
tive)
Increments of 0.01 s
Supervision time de-energized
switching
0.00 s to 60.00 s
Increments of 0.01 s
Closure delay
0.00 s to 60.00 s
Increments of 0.01 s
Voltage threshold values:
Upper voltage limit V
max
0.300 V to 340.000 V (phase-to-
phase)
Increments of 0.001 V
Lower voltage limit V
min
0.300 V to 340.000 V (phase-to-
phase)
Increments of 0.001 V
V<, for off-circuit conditions
V>, for voltage present
0.300 V to 170.000 V (phase-to-
phase)
0.300 V to 340.000 V (phase-to-
phase)
Increments of 0.001 V
Increments of 0.001 V
Differential values, changeover thresholds asynchronous/synchronous/balancing:
Voltage differences
V2 > V1; V2 < V1
0.000 V to 170.000 V
Increments of 0.001 V
Frequency difference f2 > f1;
f2 < f1
0.000 Hz to 2.000 Hz (synchro-
nous)
0.000 Hz to 4.000 Hz (asynchro-
nous)
Increments of 0.001 Hz
Angle difference α2 > α1; α2 < α1
0
o
to 90
o
Increments of 1
o
Adjustments of the sides:
Angle adjustment
0.0
o
to 360.0
o
Increments of 0.1
o
Voltage adjustment
0.500 to 2.000
Increments of 0.001
Circuit breaker
Closing time of the circuit breaker
0.01 s to 0.60 s
Increments of 0.01 s
Dropout Ratio
Min./max. operating limit
1 % of the setting value
Voltage differential
10 % of the setting value or 0.5 V
De-energized/energized
5 % of the setting value
Frequency difference
3 mHz
Angle difference
0.1
o
12.35
Technical Data
12.35 Synchronization Function
874
SIPROTEC 5, Merging Unit 6MU85, Manual
C53000-G5040-C074-1, Edition 01.2020
