ABB REJ601 Product Manual page 16

Feeder protection and control / Feeder protection
REF601 / REJ601
Product version: 2.2 FP2
Table 28. Transformer inrush detection, 3I2f> / 68
Parameter
Inrush threshold value
Ratio Setting
Table 29. Thermal overload protection, 3Ith> / 49
Parameter
Initial thermal level of apparatus 0
Reference current leading to thermal
calculation "Ib"
Heating time constant of object '��'
Cooling time constant of object '��
Alarm value, alm
Operate value, trip
Start inhibit value, startinhibit
Options for calculating thermal value
during power interruption, powerOFF
Operation time accuracy
Reset ratio
¹ Options for calculating thermal image during power interruption shall be as below
)
1 = On restoration of power, new value of current after power on will be considered to calculate new value of
thermal image for interruption period Δt.
2 = On restoration of power, new value of thermal image is calculated for interruption period Δt considering that
current has remained constant value during power interruption.
3 = Power interruption of the IED assumes no change of thermal image during interruption period.
4 = Power interruption of the IED resets the thermal image to the set value defined by setting 
Table 30. Phase discontinuity protection, I2/I1> / 46PD
Parameter
Start value, 'I2/I1>"
Operate delay time, 'tI2/I1>'
Block the phase discontinuity protection
Operation accuracy
Operation time accuracy
Reset ratio
16
Value (Range)
0.5...25 x In, in steps of 0.01
30%...50%, in steps of 5%
Value (Range)
0.0...100%, in steps of 1%
0.1 ... 1.5 x In, in steps of 0.1
1.0...300 min, in steps of 1.0
' 1.0...300 min, in steps of 1.0
↓��
50...200%, in steps of 1%
50...200%, in steps of 1%
50...200%, in steps of 1%
1...4¹)
3% of 5time constant or ± 30s
0.98
Value (Range)
10...100%, in steps of 1%
0.04... 64 s, in steps of 0.1
0 = No, 1 = Yes
± 5.0% of set value
3% of set or ± 30 ms
0.98
1MDB07221-YN
Issued: 2017-05-09
Revision: A
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