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Selection table for back-up

Selection table for HV back-up fuse-links acc. to VDE 0670 T4/IEC 60282-1

Rated voltage range of fuse-link [kV] 3/7,2 6/12 10/24 20/36
Service voltage of transformer [kV] 6 10 20 30
Rel. short-circuit voltage Transformer output [kVA] Transformer rated current (A) Rated current of fuse-link (A) Transformer rated current (A) Rated current of fuse-link (A) Transformer rated current (A) Rated current of fuse-link (A) Transformer rated current (A) Rated current of fuse-link (A)
uK = 4 % 50 4,8 16–20 2,9 10 1,5 4 0,96 2–6,3
100 9,6 20–31,5 5,8 16–20 2,9 10 1,9  6,3–10
125 12  25–40 7,2 20–25  3,6 10–16 2,4 10
160 15,4 31,5–50 9,2 20–31,5  4,6 16–20 3,1 10
200 19,2 40–63 11,5 25–40 5,8 16–20 3,8  10–16
250 24,1 40–80 14,4 31,5–50 7,2 20–25 4,8 16–20
315 30,3 50–100 18,2 40–63 9,1 20–31,5 6,1 16–25
400 38,5  63–125 23,1 40–80 11,5 25–40 7,7 20–25
500 48,1  80–160  28,9 50–100 14,4 31,5–50 9,6 20–31,5
630 60,6 100–200  36,4  63–100 18,2 40–63 12,1 25–40
800 77,1 125–200 46,2 80–125 23,1 40–63 15,4  31,5–40
uK = 5 % 1000 96,3  125–160 57,7 100–160 28,9 50–80 19,2 40–50
1250 120,3  160–200 72,2 125–200  36,1 63–100 24,1 40–50
uK = 6 % 1600 154 200 92,4 125–200 46,2 80–100 30,8 50–63
Bold typed figures are prefered values