Fuse Selection Table - Cef-S - ABB SafeRing Product Manual

15.6.2 FUSE SELECTION TABLE - CEF-S

25 50 75 100
3 16 25 40 50
3.3 16 25 40 50
4.15 16 20 40 40
5 10 20 25 40
5.5 10 20 20 40
6 10 16 20 25
6.6 10* 16 20 25
10 10* 10 16 20
11 10* 10 16 20
12 10* 10 16 16
13.8 10* 10* 16 16
15 10* 10* 10 16
17.5 10* 10* 10 16
20 10* 10* 10* 10
22 10* 10* 10* 10
24 10* 10* 10* 10
40 80 125 160
The table was calculated according to standards IEC 60787
and IEC 62271-105. The following transformer and switch-
gear work conditions were assumed:
– Maximum long-lasting transformer overload - 120%
– Magnetizing inrush current for transformers up to and
including 630kVA - 12 x In during 100ms
– Magnetizing inrush current for transformers above
630kVA - 10 x In during 100ms
– Standard ambient working conditions for SafeRing /
SafePlus switchgear
(most important: ambient temperature -25 ºC to +40 ºC),
32
Transformer rating (kVA)
125 160 200 250 315
Fuse-link rating In (A)
50
50
40 50
40 40 50
40 40 50
40 40 50 50
20 25 40 40 50
20 25 40 40 40
20 20 25 40 40
16 20 20 40 40
16 20 20 25 40
16 20 20 20 40
16 16 20 20 25
16 16 20 20 20
16 16 16 20 20
160 200 250 250 300
400 500 630
6/12 292
50
50
40
40
40 40
10/24 442
40 40
40 40 40
25 40 40
400 400 800
For ratings marked with "*" transformer maximum short-circuit
current at LV side, transferred to HV side, is below fuse-link
minimum breaking current I3.
The table above details the rated current of a particular fuse-
link for a given line voltage and transformer rating. For differ-
ent criteria, the fuse selection must be recalculated.
Catalogue No.
Catalogue No. CEF-S
CEF-S-TCU
10A:1YMB531011M0001 10A:1YMB531861M0001
16A:1YMB531011M0002 16A:1YMB531861M0002
20A:1YMB531011M0003 20A:1YMB531861M0003
25A:1YMB531011M0004 25A:1YMB531861M0004
40A:1YMB531011M0005 40A:1YMB531861M0005
50A:1YMB531011M0006 50A:1YMB531861M0006
10A:1YMB531012M0001 10A:1YMB531862M0001
16A:1YMB531012M0002 16A:1YMB531862M0002
20A:1YMB531012M0003 20A:1YMB531862M0003
25A:1YMB531012M0004 25A:1YMB531862M0004
40A:1YMB531012M0005 40A:1YMB531862M0005