ABB Relion 620 Series - Page 341

4.1.6.6 Signals
Table 323: T1PTTR Input signals
Name Type Default Description
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
BLK_OPR BOOLEAN 0=False Block signal for oper-
ate outputs
ENA_MULT BOOLEAN 0=False Enable Current multi-
plier
AMB_TEMP FLOAT32 0 The ambient temper-
ature used in the cal-
culation
Table 324: T1PTTR Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
ALARM BOOLEAN Thermal Alarm
BLK_CLOSE BOOLEAN Thermal overload indicator.
To inhibit reclose.
4.1.6.7 Settings
Table 325: T1PTTR Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Env temperature
Set
-50...100 °C 1 40 Ambient tempera-
ture used when
no external temper-
ature measurement
available
Current reference 0.05...4.00 xIn 0.01 1.00 The load current
leading to Temper-
ature raise temper-
ature
Temperature rise 0.0...200.0 °C 0.1 75.0 End temperature
rise above ambient
Time constant 60...60000 s 1 2700 Time constant of
the line in seconds.
Maximum tempera-
ture
20.0...200.0 °C 0.1 90.0 Temperature level
for operate
Alarm value 20.0...150.0 °C 0.1 80.0 Temperature level
for start (alarm)
Reclose tempera-
ture
20.0...150.0 °C 0.1 70.0 Temperature for re-
set of block reclose
after operate
1MRS757644 H Protection functions
620 series
Technical Manual
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