Transformer Protection and Control
RET630
Product version: 1.1
Table 33. Three-phase directional overcurrent protection (DPHxPDOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Directional mode
Characteristic angle
Operating curve
1)
type
1) For further reference, refer to the Operating characteristics table
32
Function
DPHLPDOC
DPHHPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHLPDOC
DPHHPDOC
Value (Range)
0.05...5.00 pu
0.05...5.00 pu
0.05...15.00
0.04...200.00 s
1 = Non-directional
2 = Forward
3 = Reverse
-179...180 deg
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 17, 18, 19
Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
1MRS756978 D
Issued: 2011-05-18
Step
0.01
0.01
0.05
0.01
1
ABB