Signals; Settings - ABB RELION 620 Series Technical Manual

1MRS757644 F
4.1.6.6
4.1.6.7
Table 325: T1PTTR Group settings (Basic)
Parameter Values (Range)
Env temperature Set
Current reference
Temperature rise
Time constant
Maximum temperature
Alarm value
Reclose temperature
620 series
Technical Manual
the conductor temperature continuously. This estimation is made by using a thermal
model of the line/cable that is based on the current measurement.
If the temperature of the protected object reaches a set warning level, a signal is given
to the operator. This enables actions in the power system to be done before dangerous
temperatures are reached. If the temperature continues to increase to the maximum
allowed temperature value, the protection initiates a trip of the protected line.

Signals

Table 323: T1PTTR Input signals
Name
I_A
I_B
I_C
BLK_OPR
ENA_MULT
AMB_TEMP
Table 324: T1PTTR Output signals
Name
OPERATE
START
ALARM
BLK_CLOSE

Settings

Unit
-50...100 °C
0.05...4.00 xIn
0.0...200.0 °C
60...60000 s
20.0...200.0 °C
20.0...150.0 °C
20.0...150.0 °C
Type Default Description
SIGNAL 0 Phase A current
SIGNAL 0 Phase B current
SIGNAL 0 Phase C current
BOOLEAN 0=False Block signal for operate outputs
BOOLEAN 0=False Enable Current multiplier
FLOAT32 0 The ambient temperature used in the calculation
Type Description
BOOLEAN Operate
BOOLEAN Start
BOOLEAN Thermal Alarm
BOOLEAN Thermal overload indicator. To inhibite reclose.
Step Default
1 40
0.01 1.00
0.1 75.0
1 2700
0.1 90.0
0.1 80.0
0.1 70.0
Section 4
Protection functions
Description
Ambient temperature used when no
external temperature measurement
available
The load current leading to Temperature
raise temperature
End temperature rise above ambient
Time constant of the line in seconds.
Temperature level for operate
Temperature level for start (alarm)
Temperature for reset of block reclose
after operate
323