Name
Values (Range)
Unit
Step
Default
Description
tTempAlarm
0.000 - 60.000
s
0.001
0.000
Time delay for temperature alarm
tTempLockOut
0.000 - 60.000
s
0.001
0.000
Time delay for temperture lockout
tResetLevelAlm
0.000 - 60.000
s
0.001
0.000
Reset time delay for level alarm
tResetLevelLO
0.000 - 60.000
s
0.001
0.000
Reset time delay for level lockout
tResetTempLO
0.000 - 60.000
s
0.001
0.000
Reset time delay for temperture lockout
tResetTempAlm
0.000 - 60.000
s
0.001
0.000
Reset time delay for temperture alarm
14.16.6
Operation principle
Insulation liquid monitoring function SSIML is used to monitor oil level in the circuit
breaker. Two binary output signals are used from the circuit breaker to initiate alarm
signals, level below alarm level and level below lockout level. If the input signal
LVL_ALM is high, which indicate that the oil level in the circuit breaker is below
alarm level, the output signal LVL_ALM, level below alarm level, will be initiated
after a set time delay and indicate that maintenance of the circuit breaker is required.
Similarly, if the input signal LVL_LO is high, which indicate oil level in the circuit
breaker is below lockout level, the output signal LVL_LO, will be initiated after a time
delay. The two time delay settings,
tLevelAlarm
and
tLevelLockOut
, are included in
order not to initiate any alarm for short sudden changes in the oil level. If the oil level
in the circuit breaker goes below the levels for more than the set time delays the
corresponding signals, LVL_ALM, level below alarm level and LVL_LO, level
below lockout level alarm will be obtained.
The input signal BLK_ALM is used to block the two alarms levels. The input signal
BLOCK is used to block both the alarms and the function.
14.16.7
Technical data
Table 427:
SSIMLTechnical data
Function
Range or value
Accuracy
Timers
(0.000-60.000) s
± 0.5% ± 110 ms
14.17
Circuit breaker condition monitoring SSCBR
14.17.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Circuit breaker condition monitoring
SSCBR
-
-
1MRK 502 048-UEN A
Section 14
Monitoring
559
Technical manual
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