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Honeywell
8. Fuses and fuseholder
8.1 Fuses and Fuse Code
CD3000S unit must be protected by fuses against short circuit selecting the proper I²t that must
be lower than thyristor one. The same caution must be taken if Circuit Breaker is used. Remember
that is very difficult to protect the thyristor if this choice is done.
WARNING!! Equipment short circuit protected by Semiconductor Fuse type
with proper I
Bussmann Div - Cooper (UK) Ltd
(200 kA
RMS
Sizes
Fuse Mod. No.
/modéle fusible
125A
2x 100 FE
150A
2x 100 FE
300A
450 FMM
350A
550 FMM
400A
550 FMM
450A
700 FMM
500A
700 FMM
FERRAZ (200kA @ 660V)
6,6 URB 000
225A
BS88/315
High speed fuses are only used for the thyristor protection and can not be used to
protect the installation.
The user installation must be protect by electromagnetic circuit breaker or by fuse
isolator.
The warranty of thyristor is null if no proper fuses are used. See tab above.
www.honeywell.com/imc
CD3000S-3PH from 125A to 500A
2
t
Symmetrical A.I.C.)
Current
(A
)
(A
RMS
100
2800
100
2800
450
105000
550
215000
550
215000
700
420000
700
420000
315
82000
Ferraz Shawmut SA
(200 kA
2
I
t
V ac Fuse Mod. No.
2
sec)
/modéle fusible
2 x 6,9 URY
660
17/100
2 x 6,9 URY
660
17/100
6,6 URZ 2X000
660
BS88 Z 450
6,6 URZ 2X000
660
BS88 Z 550
6,6 URZ 2X000
660
BS88 Z 550
6,6 URZ 2x000
660
BS88 Z 700
6,6 URZ 2x000
660
BS88 Z 700
SIBA (300kA @ 600V, 200kA @700V)
660
20 559 20
22
Symmetrical A.I.C.)
RMS
Current
(A
)
RMS
100
100
450
550
550
700
700
315
User's Manual
2
I
t
Vac
2
(A
sec)
3900
690
3900
690
126000 660
208000 660
208000 660
340000 660
340000 660
77000
660
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