GE MiCOM P141 Agile - IEC and IEEE Inverse Curves; Figure 30: IEC Standard and very Inverse Curves; Figure 31: IEC Extremely Inverse and IEEE Moderate Inverse Curves

2.1.4 IEC AND IEEE INVERSE CURVES
E00757
0.01
0.1
1
10
100
1000
0.5 5 50
Time in seconds
Current in Multiples of Setting
IEC Standard Inverse Curve
0.025
0.075
0.100
0.300
0.500
0.700
0.900
1.000
1.200
TMS
0.01
0.1
1
10
100
1000
0.5 5 50
Time in seconds
Current in Multiples of Setting
IEC Very Inverse Curve
0.025
0.075
0.100
0.300
0.500
0.700
0.900
1.000
1.200
TMSTMS
Figure 30: IEC standard and very inverse curves
E00758
0.01
0.1
1
10
100
1000
0.5 5 50
Time in seconds
Current in Multiples of Setting
IEC Extremely Inverse Curve
0.025
0.075
0.100
0.300
0.500
0.700
0.900
1.000
1.200
TMSTMS
0.01
0.1
1
10
100
1000
0.5 5 50
Time in seconds
Current in Multiples of Setting
IEEE Moderate Inverse Curve
0.05
0.5
1
5
10
30
50
70
100
Figure 31: IEC Extremely inverse and IEEE moderate inverse curves
Chapter 6 - Current Protection Functions P14x
94 P14xEd1-TM-EN-1