ABB RELION REX640 - T2 PTTR Output signals; 4.1.6.8 T2 PTTR Settings

T2PTTR Input signals
Table 444: T2PTTR Input signals
Name Type Default Description
I3P SIGNAL - Three-phase currents
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
AMB_TEMP FLOAT32 0 The ambient temper-
ature used in the cal-
culation
T2PTTR Output signals
Table 445: T2PTTR Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
ALARM BOOLEAN Thermal Alarm
BLK_CLOSE BOOLEAN Thermal overload indicator.
To inhibite reclose.
4.1.6.8 T2PTTR Settings
Table 446: T2PTTR 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
Temperature rise 0.0...200.0 °C 0.1 78.0 End temperature
rise above ambient
Max temperature 22.0...200.0 °C 0.1 105.0 Maximum tempera-
ture allowed for the
transformer
Operate tempera-
ture
80.0...120.0 % 0.1 100.0 Operate tempera-
ture, percent value
Alarm temperature 40.0...100.0 % 0.1 90.0 Alarm temperature,
percent value
Reclose tempera-
ture
40.0...100.0 % 0.1 60.0 Temperature for re-
set of block reclose
after operate
Short time con-
stant
6...60000 s 1 450 Short time con-
stant in seconds
Long time constant 60...60000 s 1 7200 Long time constant
in seconds
Weighting factor p 0.00...1.00 0.01 0.40 Weighting factor of
the short time con-
stant
Protection functions 1MRS759142 F
396 REX640
Technical Manual