CD Automation CD3000S 3PH, User Manual

Page: 21 / 23

CD3000S
3PH from 15A to 90A
User’s manual
21
Fuses and Fuse holder
Warning: High speed fuses are only used for the thyristor protection and can not be used to
protect the installation.
CD3000S unit must be protected against short circuit by High speed fuses.
The Fuses must have I²t 20% less than thyristor’s I²t.
The warranty of thyristor is null if no proper fuses are used. See tab.
Fuses and Fuse holder Code for CE
Size Fuse Holder Code Fuse Code
Total Current
(A
RMS
)
I
2
t (A
2
sec.)
Quantity
for each
phase
15A (S2) FFH1038 FU1038/16A 16 150 1
30A (S4) FFH1451 FU1451/40A 40 1650 1
45A (S6) FFH1451 FU1451/50A 50 2000 1
60A (S8) FFH2258 FU2258/80A 80 6550 1
75A (S8) FFH2258 FU2258/100A 100 13500 1
90A (S8) FFH2258 FU2258/125A 125 14000 1
Fuses and Fuse Holder Code for UL
Size
200 kA
RMS
Symmetrical A.I.C.
Quantity
for each
phase
Fuse Holder Code Fuse Code
Total Current
(A
RMS
)
I
2
t (A
2
sec) Vac
15A (S2) FFH1038 FU1038/16AUL 16 150 600 1
30A (S4) FFH1451 FU1451/40AUL 40 750 700 1
45A (S6) FFH1451 FU1451/50AUL 50 1800 700 1
60A (S8) FFH2258 FU2258/80AUL 80 6600 700 1
75A (S8) FFH2760 FU2760/100AUL 100 3210 660 1
90A (S8) FFH2760 FU2760/125AUL 125 6970 660 1
Note:
The Thyristor Switch Modules “CD3000S Series” may be protected by any equivalent UL Listed or UL
Recognized External Semiconductor Fuses, on condition that these fuses have the same ratings of the
above fuses evaluated during the Short Circuit Test and in particular with I
2
t equal or lower than tested
fuse.
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