4.7 Switch Group 7
This switch group configures the characteristic of IDMT curve.
IE3 IE3 -- IE0 IE0
These switches are for selecting the low-set earth-fault inverse curve.
IO3 IO3 -- O0 O0
These switches are for selecting the low-set overcurrent inverse curve.
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IE3IE3 IE2IE2 IE1IE1 IE0IE0 IO3IO3 IO2IO2 IO1IO1 IO0IO0
Default value
0 0 0 0 0 0 0 0
Default hexadeci-
mal value
0 0
User setting
User hexadecimal
value*
* Refer to Appendix A for the corresponding hexadecimal value.
IE3/IO3IE3/IO3 IE2/IO2IE2/IO2 IE1/IO1IE1/IO1 IE0/IO0IE0/IO0 CURVE CURVE
SELECTEDSELECTED
0 0 0 0 Normal
Inverse
0 0 0 1 Long-time
Inverse
0 0 1 0 Very
Inverse
0 0 1 1 Extremely
Inverse
1 1 X X Reserve
X denotes 1 or 0