Protective Elements
ANSI Very Inverse
Various reset modes are available:
Resetting via characteristic, delayed and instantaneous.
Remark: For
I > 20⋅I
>
, the curve stops decreasing, the t-values are kept constant at the value for
I = 20⋅I
>
.
424
MRI4
DOK-HB-MRI4-2E
0.5
1
2
5
10
15
0.01
0.1
1
10
100
0.1
1
10
100
1000
t [s]
I / I> (multiples of pickup)
tchar=
P
d
o
c
_Z
0
6
»Char«
= ANSI VINV
Reset
Trip
t
−1
19.61
=
I
I>
2
tchar
+ 0.491
t
1−
21.6
=
I
I>
2
tchar
≤ 20
If:
I
I>
1 <
If:
< 1
I
I>
Содержание highprotec MRI4
Страница 1: ...Manual Feeder Protection MRI4 Software Version 3 4 a DOK HB MRI4 2E Revision C English...
Страница 43: ...Installation and Connection 43 MRI4 DOK HB MRI4 2E...
Страница 46: ...Installation and Connection Ensure the correct tightening torques 46 MRI4 DOK HB MRI4 2E...
Страница 56: ...Installation and Connection Ethernet RJ45 Terminals 56 MRI4 DOK HB MRI4 2E 1 8 TxD TxD RxD n c n c RxD n c n c...
Страница 69: ...Navigation Operation Navigation Operation 69 MRI4 DOK HB MRI4 2E 1 2 3 5 7 6 8 10 9...
Страница 353: ...Device Parameters 353 MRI4 DOK HB MRI4 2E...
Страница 373: ...373 MRI4 DOK HB MRI4 2E...