Circuit Breaker Operation Cycles - ABB RED650 Technical Manual

1MRK 505 394-UEN A
15.4.7.5
Line differential protection RED650 2.2 IEC
Technical manual
Main Contact
close
POSCLOSE 1
0
Energy
Accumulation
starts
ContTrCorr
(Negative)
IEC12000618 V1 EN-US
Figure 274: Significance of correction factor setting
Accumulated energy can also be calculated by using the change of state of the trip
output. TRIND is used to get the instance of the trip output and the time delay
between the trip initiation and the opening of the main contact is introduced by the
setting OperTimeDelay.
The accumulated energy output IPOWPH is provided as a service value. The value
can be reset by enabling RSTIPOW through LHMI or by activating the input
RSTIPOW.
Alarm limit check
The IPOWALPH alarm is activated when the accumulated energy exceeds the set
value AlmAccCurrPwr.
IPOWLOPH is activated when the accumulated energy exceeds the limit of the
LOAccCurrPwr setting.
The IPOWALPH and IPOWLOPH outputs can be blocked by activating the binary
input BLKALM.

Circuit breaker operation cycles

The circuit breaker operation cycles subfunction counts the number of closing-
opening sequences of the breaker. The operation counter value is updated after
each closing-opening sequence. The operation is described in figure275.
Main Contact
close
open
POSCLOSE
Energy
Accumulation
starts
Section 15
Monitoring
1
0
ContTrCorr
(Positive)
IEC12000618_1_en.vsd
GUID-D3481D26-2E42-455E-8DB2-91538421F3B1 v9
open
549