Manual ZX0 HB 600 en - Revision 05 |
59
Table 4.3.5.2: Selection table for HV HRC fuses, Siba (U
r
up to 12 kV)
Operating
Voltage
Transformer
Rating
Relative
impedance
voltage u
K
Rated transformer
current
Rated current of the HV-fuse
[kV]
[kVA]
[%]
[A]
Type
min.
[A]
Type
max.
[A]
6 ... 7.2
50
4
4.8
HHD-B
16
HHD-B
16
75
4
7.2
16
20
100
4
9.6
20
25
125
4
12
20
31.5
160
4
15.4
31.5
40
200
4
19.2
40
50
250
4
24.1
40
63
315
4
30.3
50
63
400
4
38.5
63
63
400
6
38.5
63
HHD-BSSK
80
10 ... 12
50
4
2.9
10
HHD-B
10
75
4
4.3
10
10
100
4
5.8
16
16
125
4
7.2
16
20
160
4
9.2
20
25
200
4
11.5
20
31.5
250
4
14.4
25
40
315
4
18.2
31.5
50
400
4
23.1
40
50
400
6
23.1
40
40
500
4
28.9
50
63
500
6
28.9
50
HHD-BSSK
63
630
4
36.4
63
80
630
6
36.4
63
80
800
6
46.2
HHD-BSSK
80
80
