Technical Data - ABB Relion Technical Manual

1MRK 502 048-UUS A
14.15.7
14.16
14.16.1
14.16.2
Technical manual
delay. The two time delay settings, tPressureAlarm and tPressureLO, are included in
order not to initiate any alarm for short sudden changes in the gas pressure. If the gas
pressure in the circuit breaker goes below the levels for more than the set time delays the
corresponding signals, PRES_ALM, pressure below alarm level and PRES_LO, pressure
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.

Technical data

Table 423: SSIMG (63) Technical data
Function
Timers
Insulation liquid monitoring function SSIML (71)
Identification
Function description
Insulation liquid monitoring function
Functionality
Insulation liquid monitoring function SSIML (71) is used for monitoring the circuit
breaker condition. Binary information based on the oil level in the circuit breaker is used
as input signals to the function. In addition, the function generates alarms based on
received information.
Range or value
(0.000-60.000) s
IEC 61850 IEC 60617
identification identification
SSIML -
Section 14
Monitoring
Accuracy
± 0.5% ± 110 ms
ANSI/IEEE C37.2
device number
71
599