Siemens siprotec SJ62 User Manual page 81

2 Functions
79
Table 2-3 Preferential values of standardized currents for user-defined tripping curves
MofPU = 1 to 1.94
1.00 1.50 2.00
1.06 1.56 2.25
1.13 1.63 2.50
1.19 1.69 2.75
1.25 1.75 3.00
1.31 1.81 3.25
1.38 1.88
1.44 1.94
Figure 2-13 Using a user-defined curve
The value pairs are entered at address 1231 MofPU Res
Res T/TEp to recreate the reset curve. The following must be observed:
• The current values entered should be those from the following Table 2-4, along with
the matching times. Deviating values of MofPU are rounded. This, however, will not
be indicated.
Current flows greater than the highest current value entered will not lead to a pro-
longation of the reset time. The reset curve (see Figure 2-13, left side) is parallel to
the current axis, beginning with the greatest curve value point.
Current flows which are less than the smallest current value entered will not lead to
a reduction of the reset time. The reset curve (see Figure 2-13, left side) is parallel
to the current axis, beginning with the smallest curve value point.
Table 2-4 Preferential values of standardized currents for user-defined reset curves
MofPU = 1 to 0.86 MofPU = 0.84 to 0.67 MofPU = 0.66 to 0.38 MofPU = 0.34 to 0.00
1.00 0.93 0.84
0.99 0.92 0.83
0.98 0.91 0.81
0.97 0.90 0.80
0.96 0.89 0.78
0.95 0.88 0.77
0.94 0.86
MofPU = 2 to 4.75 MofPU = 5 to 7.75
3.50 5.00
3.75 5.25
4.00 5.50
4.25 5.75
4.50 6.00
4.75 6.25
0.75 0.66
0.73 0.64
0.72 0.63
0.70 0.61
0.69 0.59
0.67 0.56
MofPU = 8 to 20
6.50 8.00
6.75 9.00
7.00 10.00
7.25 11.00
7.50 12.00
7.75 13.00
14.00
T/Tp or 1331 MofPU
0.53 0.34
0.50 0.31
0.47 0.28
0.44 0.25
0.41 0.22
0.38 0.19
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
15.00
16.00
17.00
18.00
19.00
20.00
0.16
0.13
0.09
0.06
0.03
0.00