Technical Guide P12y/EN FT/D22
User Guide
MiCOM P125/P126/P127 Page 39/108
4.5.1.1 Threshold Menu I> DMT
Delay Type
DMT
Displays threshold delay time type. Setting choices are:
DMT (definite time), RI for the electromechanical
inverse time curve, IEC-XX, CO2, CO8, IEEE-XX inverse
time delay curve and RECT curve.
If the user selects DMT the following menu is displayed:
t I>
150.00 s
Displays setting value for the trip threshold.
The setting range is from 0 to 150 s, in steps of 10ms.
4.5.1.2 Threshold Menu I> RI
Delay Type
RI
Displays delay time type threshold. Setting choices are:
DMT (definite time), RI for the electromechanical
inverse time curve, IEC-XX, CO2, CO8, IEEE-XX inverse
time delay curve and RECT curve.
If the user selects RI the following menu is displayed:
K
1.000
Selection of K value for the RI curve.
Setting range is from 0.1 to 10 in steps of 0.005.
tReset
0.00 s
Displays setting value for the reset time.
The setting range is from 0 to 100 s, in steps of 10ms.
I> >> >>>
Interlock Yes
Interlock of first threshold by the second and third
thresholds, but only if first threshold trip is set to IDMT.
Setting choice: No, Yes
By pushing 2 the next window will display the threshold menu I>>