ABB RET670 Product Manual page 72

Transformer protection RET670
Customized
Product version: 1.2
Control
Table 68. Synchronizing, synchrocheck and energizing check SESRSYN
Function
Phase shift, j - j
line bus
Voltage ratio, U /U
bus line
Voltage high limit for synchronizing and
synchrocheck
Reset ratio, synchrocheck
Frequency difference limit between bus and
line for synchrocheck
Phase angle difference limit between bus and
line for synchrocheck
Voltage difference limit between bus and line
for synchronizing and synchrocheck
Time delay output for synchrocheck
Frequency difference minimum limit for
synchronizing
Frequency difference maximum limit for
synchronizing
Maximum allowed frequency rate of change
Closing time of the breaker
Breaker closing pulse duration
tMaxSynch, which resets synchronizing
function if no close has been made before set
time
Minimum time to accept synchronizing
conditions
Voltage high limit for energizing check
Reset ratio, voltage high limit
Voltage low limit for energizing check
Reset ratio, voltage low limit
Maximum voltage for energizing
Time delay for energizing check
Operate time for synchrocheck function
Operate time for energizing function
72
Range or value
(-180 to 180) degrees
0.500 - 2.000
UBaseBus and
(50.0-120.0)% of
UBaseLIne
> 95%
(0.003-1.000) Hz
(5.0-90.0) degrees
(0.02-0.5) p.u
(0.000-60.000) s
(0.003-0.250) Hz
(0.050-0.500) Hz
(0.000-0.500) Hz/s
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
UBaseBus and
(50.0-120.0)% of
UBaseLIne
> 95%
UBaseBus and
(10.0-80.0)% of
UBaseLine
< 105%
UBaseBus and/
(50.0-180.0)% of
or UBaseLIne
(0.000-60.000) s
160 ms typically
80 ms typically
1MRK 504 117-BEN D
Accuracy
-
-
± 0.5% of U at U ≤ U
r r
± 0.5% of U at U >U
r
-
± 2.0 mHz
± 2.0 degrees
± 0.5% of U
r
± 0.5% ± 10 ms
± 2.0 mHz
± 2.0 mHz
± 10.0 mHz/s
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% ± 10 ms
± 0.5% of U at U ≤ U
r r
± 0.5% of U at U >U
r
-
± 0.5% of U
r
-
± 0.5% of U at U ≤ U
r r
± 0.5% of U at U >U
r
± 0.5% ± 10 ms
-
-
ABB