goes below the settings for more than these time delays, the corresponding alarm
PRESALM or lockout PRESLO will be initiated. The SETPLO binary input is
used for setting the gas pressure lockout PRESLO. The PRESLO output retains the
last value until it is reset by using the binary input RESETLO. The binary input
BLKALM can be used to block the alarms, and the BLOCK input can block both
alarm and the lockout indications.
Temperature of the medium is available from the input signal of temperature. The
signal is monitored to detect high temperature.
When temperature input SENTEMP is above TempAlarmLimit, temperature alarm
TEMPALM will be initiated. Similarly, if temperature input SENTEMP is above
TempLOLimit, temperature lockout TEMPLO will be initiated.
There may be sudden change in temperature of the medium for a very small time,
for which the function need not to initiate any alarm. To avoid the intermittent
alarm, two time delays tTempAlarm or tTempLockOut have been included. If the
temperature goes above the settings for more than these time delays, the
corresponding alarm TEMPALM or lockout TEMPLO will be initiated. The
SETTLO binary input is used for setting the temperature lockout TEMPLO. The
TEMPLO output retains the last value until it is reset by using the binary input
RESETLO. The binary input BLKALM can be used to block the alarms, and the
BLOCK input can block both alarm and the lockout indications.
The output ALARM goes high if the pressure alarm condition or the temperature
alarm condition exists inside the circuit breaker. The output ALARM can be
blocked by activating BLOCK or BLKALM inputs.
The output LOCKOUT goes high if the pressure lockout condition or the
temperature lockout condition exists inside the circuit breaker and it resets by using
the binary input RESETLO. The output LOCKOUT can be blocked by activating
BLOCK input.
15.2.8 Technical data
GUID-F034B396-6600-49EF-B0A5-8ED96766A6A0 v7
Table 381: SSIMG Technical data
Function
Range or value Accuracy
Pressure alarm level 1.00-100.00 ±10.0% of set value
Pressure lockout level 1.00-100.00 ±10.0% of set value
Temperature alarm level -40.00-200.00 ±2.5% of set value
Temperature lockout level -40.00-200.00 ±2.5% of set value
Time delay for pressure alarm (0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Reset time delay for pressure
alarm
(0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Time delay for pressure lockout (0.000-60.000) s ±0.2% or ±250ms whichever is
greater
Table continues on next page
1MRK 505 394-UEN A Section 15
Monitoring
Line differential protection RED650 2.2 IEC 535
Technical manual
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