Control
M12359-1 v16
Table 60. 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
multiplication factor
0.500 - 2.000
-
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
0.03-0.50 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
±0.5% ±25 ms
Frequency difference minimum limit for synchronizing
(0.003-0.250) Hz
±2.0 mHz
Frequency difference maximum limit for synchronizing
(0.050-1.000) Hz
±2.0 mHz
Closing time of the breaker
(0.000-60.000) s
±0.5% ±25 ms
Maximum closing angle between bus and line for synchronizing
(15-30) degrees
±2.0 degrees
Breaker closing pulse duration
(0.050-1.000) s
±0.5% or ±25 ms
tMaxSynch, which resets synchronizing function if no close has been
made before set time
(0.000-6000.00) s
±0.5% ±25 ms
Minimum time to accept synchronizing conditions
(0.000-60.000) s
±0.5% ±25 ms
Time delay output for energizing check
(0.000-60.000) s
±0.2% or ±100 ms whichever is
greater
Operate time for synchrocheck function
22 ms typically when angle
difference between bus and line
jumps from “PhaseDiff” + 2
degrees to “PhaseDiff” - 2
degrees
-
Operate time for energizing function
84 ms typically when voltage
jumps from 0 to 90% of Urated
-
Line distance protection REL650
1MRK 506 384-BEN H
Version 2.2
Hitachi Power Grids
79
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