Seg HighTECH Line MRI1IU, Manual, Page: 18 / 22

18 TD_MRI1-IU_05.04_GB
7.4 Inverse time characteristics
1 2 3 4 5 6 7 8 9 10 20
I/I
S
0.1
1
10
100
1000
t[s]
t
I>
=
3.0
10.0
8.0
6.0
4.0
2.0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.4
Figure 7.1: Normal Inverse
1 2 3 4 5 6 7 8 9 10 20
I/I
S
0.01
0.1
1
10
100
1000
t[s]
t
I>
=
10.0
8.0
6.0
4.0
3.0
2.0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.4
Figure 7.2:
Extremely Inverse
1 2 3 4 5 6 7 8 9 10 20
I/I
S
0.1
1
10
100
1000
t[s]
t
I>
=
10.0
8.0
6.0
4.0
3.0
2.0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.4
Figure 7.3: Very Inverse
1 10
I/I
N
0.01
0.1
1
10
100
t[s]
t
I
>
I>>
t
I
>>
260
0.03
1.0 40
2.0
0.03
I>
0.02 4.0
Figure 7.4
Definite time overcurrent relay
7.5 Output contacts
Number of relays:
dependent on relay type
Contacts: 2 change-over contacts for trip relay
1 change-over contact for alarm relays
Technical data subject to change without notice!