Supplementary Information For Binary Inputs - ABB RELION REB500 Technical Manual

1MRK 505 406-UEN B
Typical values for a phase-shift setting (
maxFreqDif
200 mHz
100 mHz
50 mHz
Minimum function operating time
The minimum operating time achieved by the function, that is, the shortest possible time
between the instant the synchronism conditions are fulfilled for the first time and the
generation of the signal enabling the circuit-breaker to be closed
the sum of the measuring time setting
function.
Minimum operating time = (supervisTime) + tv
Autoreclosure dead time
In an autoreclosure scheme, the dead time set for the autoreclosure function must be at least
as long as the minimum operating time of the synchrocheck function given above in order to
permit the synchrocheck function to issue an enable signal (
time:
Dead time ≥ minimum operating time = (supervisTime) + tv
Reset time (t-Reset)
From the instant that one or more of the synchronism conditions are no longer fulfilled, the
enabling signal output (
t‑Reset .
This ensures a CB closing signal can be maintained for a certain minimum time.
Typical value:
t-Reset 50 ms
5.7.6.3

Supplementary information for binary inputs

Inputs for switching between analogue busbar inputs (uBus1Activ,
uBus2Activ)
Where the two busbar inputs (Bus I/P1 and Bus I/P2) have been configured for a double busbar
installation, the measurement can be switched from one busbar to the other by signals
corresponding to the isolator positions applied to the inputs uBus1Activ and uBus2Activ:
uBus1Activ
(T) TRUE
(F) FALSE
Bay protection functions REB500
Technical manual
supervisTime
100... 200 ms
250... 450 ms
600...1000 ms
PermitToClose ) and the pick-up signal reset after the time set for
Where high slip frequencies df are to be expected,
enough to prevent the phase-shift from exceeding the set permissible range of
phase-angles (-PhaseDiff to + PhaseDiff) during the reset time.
uBus2Activ
(F) FALSE
(T) TRUE
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maxPhaseDif ) of 10°:
supervisTime and the pick-up response time tv of the
PermitToClose ) within the dead
Analogue inputs for synchronisatiom
uBusInput1 and uLineInput
uBusInput2 and uLineInput
Section 5
Bay protection functions
PermitToClose , is given by
t‑Reset must be short
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