ABB RED615 Product Manual page 40

Line Differential Protection and Control
RED615
Product version: 2.0
Table 43. Three-phase inrush current detection (INRPHAR)
Characteristic
Operation accuracy
Reset time
Reset ratio
Operate time accuracy
Table 44. Three-phase inrush detection (INRPHAR) main settings
Parameter
Start value (Ratio of
the 2nd to the 1st
harmonic leading to
restraint)
Operate delay time
40
Function
INRPHAR
INRPHAR
Value
At the frequency f=f
n
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)
5...100 %
20...60000 ms
1MRS756500 B
Issued: 03.07.2009
n
Step
1
1
ABB