P12y/EN FT/D22 Technical Guide
User Guide
Page 54/108 MiCOM P125/P126/P127
4.5.3.5 Threshold Menu I> ANSI/IEEE
Delay Type
IEEE-EI
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 IEEE/ANSI curve, the following menu
is displayed:
TMS
1.000
Displays TMS value for the IEEE/ANSI curve.
The setting range is from 0.025 to 1.5, in steps of
0.025.
By pushing 2 the next window will display the I>>?
4.5.3.6 Reset Threshold Menu I> DMT/IDMT IEEE/ANSI
Reset Delay Type
DMT
Displays the reset delay time type.
Select between DMT (Definitive Time) and IDMT
(Inverse Time).
If the user selects DMT delay type, the following menu
is displayed:
tReset
0.10 s
Displays setting value for the reset time.
The setting range is from 0 to 100 s, in steps of 10ms.
By pushing 2 the next window will display the I>>?
Reset Delay Type
IDMT
Displays the reset delay time type.
Select between DMT (Definitive Time) and IDMT
(Inverse Time).
If the user selects IDMT delay type, the following menu
is displayed:
RTMS
0.025
Displays the RTMS value associated with the IDMT reset
time choice.
The setting range is from 0.025 to 1.5, in steps of
0.025.
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 I>>?
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