Circuit Breaker Status - ABB RED650 Technical Manual

Section 15
Monitoring
15.4.7.2
546
The closing time is calculated by adding the value set with the CloseTimeCorr
(t3+t4) setting to the measured closing time.
The last measured opening travel time (TTRVOP) and the closing travel time
(TTRVCL) are given as service values.
The values can be reset using the Clear menu on the LHMI or by activation the
input RSTCBWR.
Alarm limit check
When the measured opening travel time is longer than the value set in the
tTrOpenAlm setting, the TRVTOPAL output is activated. Similarly, when the
measured closing travel time is longer than the value set in the tTrCloseAlm setting,
the TRVTCLAL output is activated.
It is also possible to block the TRVTCLAL and TRVTOPAL alarm signals by
activating the BLKALM input.

Circuit breaker status

The circuit breaker status subfunction monitors the position of the circuit breaker,
that is, whether the breaker is in the open, closed or error position. The operation is
described in figure 271.
I3P-ILRMSPH
POSCLOSE
POSOPEN
IEC12000613 V3 EN-US
Figure 271: Functional module diagram for monitoring circuit breaker status
Phase current check
The module compares the phase current I3P-ILRMSPH to the AccStopCurr setting.
If the current in the selected phase exceeds the set level, it is reported to the contact
position indicator module as closed circuit breaker.
Contact position indicator
The circuit breaker status is open when the auxiliary input contact POSCLOSE is
low, the POSOPEN input is high and the phase current is less than the setting
AccStopCurr value. The circuit breaker is closed when the POSOPEN input is low
and the POSCLOSE input is high. The breaker is in the error state if both auxiliary
Phase current
check
Contact
position
indicator
Line differential protection RED650 2.2 IEC
1MRK 505 394-UEN A
GUID-390A1250-B258-4023-9A7D-0D7E19E13A6C v12
OPENPOS
CLOSEPOS
INVDPOS
IEC12000613-3-en.vsd
Technical manual