REVO C
3PH from 30A to 40A
User’s manual
63
Internal Fuse
The thyristor unit have internal fuse extrarapid at low I²t for the thyristor protection of against the short-circuits.
The Fuses must have I²t 20% less than thyristor’s I²t. The warranty of thyristor is null if no proper fuses are used.
Type
Fuse Code
Spare Part
Current (ARMS)
I²T at 500Vac*
(A² sec.)
Vac
Max Power
Lost (W)
030
FU1451/40A
40
525
660
8
035
FU1451/50A
50
1260
660
9
040
FU1451/50A
50
1260
660
9
*
I2T are multiplied for K value in function of Vac at 500V K is
equal to 0,7 (750 X 0,7 = 525 1800 X 0,7 =1260).
At 660Vac K is equal to 1.
17
1.4
1.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
200 300 400 500 600 700
V
AC
K
17.1 Fuses Replacement
Open the Fuse-Holder
and pull out the fuses
Caution:
High speed fuses are used only for the thyristor protection and can not be used to
protect the installation.
Caution:
The warranty of thyristor is null if no proper fuses are used. See tab.
Warning:
When it is supply, the Thyristor unit is subject to dangerous voltage, don’t open the
Fuse-holder module and don’t touch the electric equipments.
