ABB RET670 - Synchronizing, Synchrocheck and Energizing Check SESRSYN

Control
Table 71. Synchronizing, synchrocheck and energizing check SESRSYN
Function Range or value Accuracy
Phase shift, j
line
- j
bus
(-180 to 180) degrees -
Voltage high limit for synchronizing and synchrocheck (50.0-120.0)% of UBase ± 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 ± 2.5 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 when angle difference between bus
and line jumps from “PhaseDiff” + 2 degrees to “PhaseDiff” - 2 degrees
(0.000-60.000) s ± 0.2% or ± 35 ms whichever is
greater
Frequency difference minimum limit for synchronizing (0.003-0.250) Hz ± 2.5 mHz
Frequency difference maximum limit for synchronizing (0.050-0.500) Hz ± 2.5 mHz
Maximum allowed frequency rate of change (0.000-0.500) Hz/s ± 10.0 mHz/s
Breaker closing pulse duration (0.050-60.000) s ± 0.2% or ± 15 ms whichever is
greater
tMaxSynch, which resets synchronizing function if no close has been made
before set time
(0.000-6000.00) s ± 0.2% or ± 35 ms whichever is
greater
Minimum time to accept synchronizing conditions (0.000-60.000) s ± 0.2% or ± 35 ms whichever is
greater
Voltage high limit for energizing check (50.0-120.0)% of UBase ± 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 UBase ± 0.5% of U
r
Reset ratio, voltage low limit < 105% -
Maximum voltage for energizing (50.0-180.0)% of UBase ± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Time delay for energizing check when voltage jumps from 0 to 90% of
Urated
(0.000-60.000) s ± 0.2% or ± 100 ms whichever is
greater
Operate time for synchrocheck function when angle difference between bus
and line jumps from “PhaseDiff” + 2 degrees to “PhaseDiff” - 2 degrees
Min = 15 ms
Max = 30 ms
–
Operate time for energizing function when voltage jumps from 0 to 90% of
Urated
Min = 70 ms
Max = 90 ms
–
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
82 ABB