Control
Table 52. Synchronizing, synchrocheck and energizing check SESRSYN
Function Range or value Accuracy
Phase shift, j
line
- j
bus
(-180 to 180) degrees -
Voltage ratio, U
bus
/U
line
0.500 - 2.000 -
Voltage high limit for synchronizing and synchrocheck (50.0-120.0)% of
UBaseBus and
UBaseLIne
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U >U
r
Reset ratio, synchrocheck > 95% -
Frequency difference limit between bus and line for synchrocheck (0.003-1.000) Hz ± 2.0 mHz
Phase angle difference limit between bus and line for synchrocheck (5.0-90.0) degrees ± 2.0 degrees
Voltage difference limit between bus and line for synchronizing and
synchrocheck
(0.02-0.5) p.u ± 0.5% of U
r
Time delay output for synchrocheck (0.000-60.000) s ± 0.5% ± 10 ms
Frequency difference minimum limit for synchronizing (0.003-0.250) Hz ± 2.0 mHz
Frequency difference maximum limit for synchronizing (0.050-0.500) Hz ± 2.0 mHz
Maximum allowed frequency rate of change (0.000-0.500) Hz/s ± 10.0 mHz/s
Closing time of the breaker (0.000-60.000) s ± 0.5% ± 10 ms
Breaker closing pulse duration (0.000-60.000) s ± 0.5% ± 10 ms
tMaxSynch, which resets synchronizing function if no close has been
made before set time
(0.000-60.000) s ± 0.5% ± 10 ms
Minimum time to accept synchronizing conditions (0.000-60.000) s ± 0.5% ± 10 ms
Voltage high limit for energizing check (50.0-120.0)% of
UBaseBus and
UBaseLIne
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U >U
r
Reset ratio, voltage high limit > 95% -
Voltage low limit for energizing check (10.0-80.0)% of
UBaseBus and
UBaseLine
± 0.5% of U
r
Reset ratio, voltage low limit < 105% -
Maximum voltage for energizing (50.0-180.0)% of
UBaseBus and/
or UBaseLIne
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U >U
r
Time delay for energizing check (0.000-60.000) s ± 0.5% ± 10 ms
Operate time for synchrocheck function 160 ms typically -
Operate time for energizing function 80 ms typically -
1MRK511232-BEN E
Pre-configured
Product version: 1.2
52 ABB
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