Three-Phase Thermal Overload (T1Pttr) Main Settings - ABB REF630 Product Manual

Feeder Protection and Control
REF630
Product version: 1.0
Table 40. Three-phase thermal overload (T1PTTR) main settings
Parameter
Env temperature Set
(Ambient
temperature used
when the AmbSens is
set to Off)
Current multiplier
(Current multiplier
when function is
used for parallel
lines)
Current reference
Temperature rise
(End temperature
rise above ambient)
Time constant (Time
constant of the line
in seconds)
Maximum
temperature
(temperature level
for operate)
Alarm value
(Temperature level
for start (alarm)
Reclose temperature
(Temperature for
reset of block reclose
after operate)
Initial temperature
(Temperature raise
above ambient
temperature at
startup)
36
Function
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
Value (Range)
-50...100 deg
1...5
0.05...4.00 pu
0.0...200.0 deg
1...1000 min
20.0...200.0 deg
20.0...150.0 deg
20.0...150.0 deg
-50.0...100.0 deg
1MRS756380 A
Issued: 15.09.2009
Step
1
1
0.01
0.1
1
0.1
0.1
0.1
0.1
ABB