Settings; Operation Principle - ABB REG650 Technical Manual

Section 14
Monitoring
14.15.5
Table 422: SSIMG Group settings (basic)
Name
Operation
PressAlmLimit
PressLOLimit
TempAlarmLimit
TempLOLimit
tPressureAlarm
tPressureLO
tTempAlarm
tTempLockOut
tResetPressAlm
tResetPressLO
tResetTempLO
tResetTempAlm
14.15.6
556
Table 421: SSIMG Output signals
Name
PRESSURE
PRES_ALM
PRES_LO
TEMP
TEMP_ALM
TEMP_LO

Settings

Values (Range) Unit
Off -
On
0.00 - 25.00 -
0.00 - 25.00 -
-40.00 - 200.00 -
-40.00 - 200.00 -
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s

Operation principle

Insulation gas monitoring function SSIMG is used to monitor gas pressure in the
circuit breaker. Two binary output signals are used from the circuit breaker to initiate
alarm signals, pressure below alarm level and pressure below lockout level. If the
input signal PRES_ALM is high, which indicate that the gas pressure in the circuit
breaker is below alarm level, the function initiates output signal PRES_ALM,
pressure below alarm level, 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 circuit breaker is below lockout level, the function initiates
output signal PRES_LO, after a time 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
Type Description
REAL Pressure service value
BOOLEAN Pressure below alarm level
BOOLEAN Pressure below lockout level
REAL Temperature of the insulation medium
BOOLEAN Temperature above alarm level
BOOLEAN Temperature above lockout level
Step Default
- Off
0.01 5.00
0.01 3.00
0.01 30.00
0.01 30.00
0.001 0.000
0.001 0.000
0.001 0.000
0.001 0.000
0.001 0.000
0.001 0.000
0.001 0.000
0.001 0.000
1MRK 502 048-UEN A
Description
Operation Off / On
Alarm setting for pressure
Pressure lockout setting
Temperature alarm level setting of the
medium
Temperature lockout level of the medium
Time delay for pressure alarm
Time delay for pressure lockout indication
Time delay for temperature alarm
Time delay for temperture lockout
Reset time delay for pressure alarm
Reset time delay for pressure lockout
Reset time delay for temperture lockout
Reset time delay for temperture alarm
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