ABB RED615 Product Manual page 45

ABB
Line Differential Protection and Control
RED615
Product version: 4.0
Table 53. 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)
Table 54. Three-phase inrush current detection (INRPHAR)
Characteristic
Operation accuracy
Reset time
Reset ratio
Operate time accuracy
Function
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
Value
At the frequency f = f
Current measurement:
±1.5% of the set value or ±0.002 x I
Ratio I2f/I1f measurement:
±5.0% of the set value
+35 ms / -0 ms
Typical 0.96
+35 ms / -0 ms
Value (Range)
-50...100°C
1...5
0.05...4.00 x I
n
0.0...200.0°C
60...60000 s
20.0...200.0°C
20.0...150.0°C
20.0...150.0°C
-50.0...100.0°C
n
1MRS756500 F
Step
1
1
0.01
0.1
1
0.1
0.1
0.1
0.1
n
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