Protective Elements
ANSI Moderately Inverse
Various reset modes are available:
Resetting via characteristic, delayed and instantaneous.
Remark: For
I
G
> 20⋅
I
G>
, the curve stops decreasing, the t-values are kept constant at the value for
I
G
= 20⋅
I
G>
.
461
MRI4
DOK-HB-MRI4-2E
1
0.5
2
5
10
15
0.01
0.1
1
10
100
0.1
1
10
100
1000
t [s]
IG / IG> (multiples of pickup)
tchar=
E
d
o
c
_Z
0
5
Reset
Trip
»Char«
= ANSI MINV
If:
< 1
IG
IG>
≤ 20
If:
IG
IG>
1 <
t
−1
0.0515
=
IG
IG>
0.02
tchar
+ 0.1140
t
1−
4.85
=
IG
IG>
2
tchar
Summary of Contents for highprotec MRI4
Page 1: ...Manual Feeder Protection MRI4 Software Version 3 4 a DOK HB MRI4 2E Revision C English...
Page 43: ...Installation and Connection 43 MRI4 DOK HB MRI4 2E...
Page 46: ...Installation and Connection Ensure the correct tightening torques 46 MRI4 DOK HB MRI4 2E...
Page 69: ...Navigation Operation Navigation Operation 69 MRI4 DOK HB MRI4 2E 1 2 3 5 7 6 8 10 9...
Page 353: ...Device Parameters 353 MRI4 DOK HB MRI4 2E...
Page 373: ...373 MRI4 DOK HB MRI4 2E...