Table 53. Three-phase thermal overload (T1PTTR) main settings
Parameter
Function
Value (Range)
Step
Env temperature Set
(Ambient temperature used
when the AmbSens is set
to Off)
T1PTTR
-50...100°C
1
Current multiplier (Current
multiplier when function is
used for parallel lines)
T1PTTR
1...5
1
Current reference
T1PTTR
0.05...4.00 x I
n
0.01
Temperature rise (End
temperature rise above
ambient)
T1PTTR
0.0...200.0°C
0.1
Time constant (Time
constant of the line in
seconds)
T1PTTR
60...60000 s
1
Maximum temperature
(temperature level for
operate)
T1PTTR
20.0...200.0°C
0.1
Alarm value (Temperature
level for start (alarm)
T1PTTR
20.0...150.0°C
0.1
Reclose temperature
(Temperature for reset of
block reclose after operate)
T1PTTR
20.0...150.0°C
0.1
Initial temperature
(Temperature raise above
ambient temperature at
startup)
T1PTTR
-50.0...100.0°C
0.1
Table 54. Three-phase inrush current detection (INRPHAR)
Characteristic
Value
Operation accuracy
At the frequency f = f
n
Current measurement:
±1.5% of the set value or ±0.002 x I
n
Ratio I2f/I1f measurement:
±5.0% of the set value
Reset time
+35 ms / -0 ms
Reset ratio
Typical 0.96
Operate time accuracy
+35 ms / -0 ms
Line Differential Protection and Control
1MRS756500 F
RED615
Product version: 4.0
ABB
45
Содержание RED615 ANSI
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