ABB RELION REX640 Technical Manual page 396

Protection functions
T2PTTR Input signals
Table 444: T2PTTR Input signals
Name
I3P
BLOCK
AMB_TEMP
T2PTTR Output signals
Table 445: T2PTTR Output signals
Name
OPERATE
START
ALARM
BLK_CLOSE
4.1.6.8 T2PTTR Settings
Table 446: T2PTTR Group settings (Basic)
Parameter Values (Range)
Env temperature -50...100
Set
Temperature rise 0.0...200.0
Max temperature 22.0...200.0
Operate tempera- 80.0...120.0
ture
Alarm temperature 40.0...100.0
Reclose tempera- 40.0...100.0
ture
Short time con- 6...60000
stant
Long time constant 60...60000
Weighting factor p 0.00...1.00
396
Type
SIGNAL
BOOLEAN
FLOAT32
Type
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
Unit Step
°C 1
°C 0.1
°C 0.1
% 0.1
% 0.1
% 0.1
s 1
s 1
0.01
Default Description
- Three-phase currents
0=False Block signal for acti-
vating the blocking
mode
0 The ambient temper-
ature used in the cal-
culation
Description
Operate
Start
Thermal Alarm
Thermal overload indicator.
To inhibite reclose.
Default
40
78.0
105.0
100.0
90.0
60.0
450
7200
0.40
1MRS759142 F
Description
Ambient tempera-
ture used when
no external temper-
ature measurement
available
End temperature
rise above ambient
Maximum tempera-
ture allowed for the
transformer
Operate tempera-
ture, percent value
Alarm temperature,
percent value
Temperature for re-
set of block reclose
after operate
Short time con-
stant in seconds
Long time constant
in seconds
Weighting factor of
the short time con-
stant
REX640
Technical Manual