Name Values (Range) Unit Step Default DescriptionTempLOLimit -40.00 - 200.00 - 0.01 30.00 Temperature lockout level of the mediumtPressureAlarm 0.000 - 60.000 s 0.001 0.000 Time delay for pressure alarmtPressureLO 0.000 - 60.000 s 0.001 0.000 Time delay for pressure lockout indicationtTempAlarm 0.000 - 60.000 s 0.001 0.000 Time delay for temperature alarmtTempLockOut 0.000 - 60.000 s 0.001 0.000 Time delay for temperture lockouttResetPressAlm 0.000 - 60.000 s 0.001 0.000 Reset time delay for pressure alarmtResetPressLO 0.000 - 60.000 s 0.001 0.000 Reset time delay for pressure lockouttResetTempLO 0.000 - 60.000 s 0.001 0.000 Reset time delay for temperture lockouttResetTempAlm 0.000 - 60.000 s 0.001 0.000 Reset time delay for temperture alarm14.16.6 Operation principleInsulation gas monitoring function SSIMG (63) is used to monitor gas pressure in thecircuit breaker. Two binary output signals are used from the circuit breaker to initiatealarm signals, pressure below alarm level and pressure below lockout level. If the inputsignal PRES_ALM is high, which indicate that the gas pressure in the circuit breaker isbelow alarm level, the function initiates output signal PRES_ALM, pressure below alarmlevel, after a set time delay and indicate that maintenance of the circuit breaker is required.Similarly, if the input signal PRES_LO is high, which indicate gas pressure in the circuitbreaker is below lockout level, the function initiates output signal PRES_LO, after a timedelay. The two time delay settings, tPressureAlarm and tPressureLO, are included inorder not to initiate any alarm for short sudden changes in the gas pressure. If the gaspressure in the circuit breaker goes below the levels for more than the set time delays thecorresponding signals, PRES_ALM, pressure below alarm level and PRES_LO, pressurebelow lockout level alarm will be obtained.The input signal BLK_ALM is used to block the two alarms levels. The input signalBLOCK is used to block both the alarms and the function.14.16.7 Technical dataTable 505:SSIMG (63) Technical dataFunction Range or value AccuracyTimers (0.000-60.000) s ± 0.5% ± 110 ms1MRK 506 335-UUS A Section 14Monitoring677Technical manual
