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.
14.4.3.1 Setting procedure on the IED
GUID-4E895FEA-74BF-4B11-A239-0574F8FF5188 v5
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 (
IBase
), primary voltage (
UBase
) and primary
power (
SBase
) are set in Global base values for settings function GBASVAL.
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
0.5
to
3.0
.
AccStopCurr
: RMS current setting below which calculation of energy accumulation stops. It is
given as a percentage of
IBase
.
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.
Section 14 1MRK 505 370-UEN D
Monitoring
368 Busbar protection REB670
Application manual
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