ABB 650 series, Technical Manual

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14.16.5 Settings
Table 426: SSIML (71) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Disable/Enable Operation
LevelAlmLimit 0.00 - 25.00 - 0.01 5.00 Alarm setting for level
LevelLOLimit 0.00 - 25.00 - 0.01 3.00 Level lockout setting
TempAlarmLimit -40.00 - 200.00 - 0.01 30.00 Temperature alarm level setting of the medium
TempLOLimit -40.00 - 200.00 - 0.01 30.00 Temperature lockout level of the medium
tLevelAlarm 0.000 - 60.000 s 0.001 0.000 Time delay for level alarm
tLevelLockOut 0.000 - 60.000 s 0.001 0.000 Time delay for level lockout indication
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 (71) 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.
1MRK 502 048-UUS A
Section 14
Monitoring
601
Technical manual