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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.
14.15.7
Technical data
Table 423:
SSIMG (63) Technical data
Function
Range or value
Accuracy
Timers
(0.000-60.000) s
± 0.5% ± 110 ms
14.16
Insulation liquid monitoring function SSIML (71)
14.16.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Insulation liquid monitoring function
SSIML
-
71
14.16.2
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.
1MRK 502 048-UUS A
Section 14
Monitoring
599
Technical manual
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