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Section 14
Monitoring
14.4.3.1
Setting procedure on the IED
The parameters for breaker monitoring (SSCBR) can be set via the local HMI or Protection and
Control Manager (PCM600).
Common base IED values for primary current (
power (
GlobalBaseSel : It is used to select a GBASVAL function for reference of base values.
Operation : On or Off .
IBase : Base phase current in primary A. This current is used as reference for current settings.
OpenTimeCorr : Correction factor for circuit breaker opening travel time.
CloseTimeCorr : Correction factor for circuit breaker closing travel time.
tTrOpenAlm : Setting of alarm level for opening travel time.
tTrCloseAlm : Setting of alarm level for closing travel time.
OperAlmLevel : Alarm limit for number of mechanical operations.
OperLOLevel : Lockout limit for number of mechanical operations.
CurrExponent : Current exponent setting for energy calculation. It varies for different types of
circuit breakers. This factor ranges from
AccStopCurr : RMS current setting below which calculation of energy accumulation stops. It is
given as a percentage of
ContTrCorr : Correction factor for time difference in auxiliary and main contacts' opening time.
AlmAccCurrPwr : Setting of alarm level for accumulated energy.
LOAccCurrPwr : Lockout limit setting for accumulated energy.
SpChAlmTime : Time delay for spring charging time alarm.
tDGasPresAlm : Time delay for gas pressure alarm.
tDGasPresLO : Time delay for gas pressure lockout.
DirCoef : Directional coefficient for circuit breaker life calculation.
RatedOperCurr : Rated operating current of the circuit breaker.
368
Since there is no current measurement in SAM600-IO, evaluation of the
following parameters are not possible in the circuit breaker condition
monitoring function (SSCBR):
•
Circuit breaker status
•
Remaining life of the circuit breaker
•
Contact erosion estimation
•
Circuit breaker contact travel time
Ensure that OPENPOS, CLOSEPOS, INVDPOS, CBLIFEAL, IPOWALPH,
IPOWLOPH, TRVTOPAL and TRVTCLAL signals are not used in SAM600–IO.
SBase ) are set in Global base values for settings function GBASVAL.
IBase .
IBase ), primary voltage ( UBase ) and primary
0.5 to 3.0 .
1MRK 505 370-UEN D
GUID-4E895FEA-74BF-4B11-A239-0574F8FF5188 v5
Busbar protection REB670
Application manual
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