7.7.5
Setting parameters
Table 217:
LPTTR (26) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
IBase
0 - 99999
A
1
3000
Base current in A
TRef
0 - 600
Deg
1
90
End temperature rise above ambient of the
line when loaded with IRef
IRef
0 - 400
%IB
1
100
The load current (in % of IBase) leading to
TRef temperature
IMult
1 - 5
-
1
1
Current multiplier when function is used for
two or more lines
Tau
0 - 1000
Min
1
45
Time constant of the line in minutes.
AlarmTemp
0 - 200
Deg
1
80
Temperature level for pickup (alarm)
TripTemp
0 - 600
Deg
1
90
Temperature level for trip
ReclTemp
0 - 600
Deg
1
75
Temperature for reset of lockout after trip
tPulse
0.05 - 0.30
s
0.01
0.1
Operate pulse length. Minimum one
execution cycle
AmbiSens
Disabled
Enabled
-
-
Disabled
External temperature sensor availiable
DefaultAmbTemp
-50 - 250
Deg
1
20
Ambient temperature used when AmbiSens is
set to Off.
DefaultTemp
-50 - 600
Deg
1
50
Temperature raise above ambient
temperature at startup
1MRK505222-UUS C
Section 7
Current protection
455
Technical reference manual
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