Honeywell
CD3000M-1PH from 125A to 700A
User’s Manual
www.honeywell.com/imc
34
8. FUSES AND FUSEHOLDER
8.1 Fuses and Fuse Code
CD3000M 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 choise is done.
WARNING!! Equipment short circuit protected by Semiconductor Fuse type with
proper I
2
t
Bussmann Div - Cooper (UK) Ltd
(200 kA
RMS
Symmetrical A.I.C.)
Ferraz Shawmut SA
(200 kA
RMS
Symmetrical A.I.C.)
Sizes
Fuse Mod. No.
/modéle fusible
Current
(A
RMS
)
I²t
(A
2
sec)
V ac
Fuse Mod. No.
/modéle fusible
Current
(A
RMS
)
I²t
(A
2
sec)
Vac
125A
200 FEE
200
11400
660
6,6 URY 000
BS88/200
200
16000 660
150A
200 FEE
200
11400
660
6,6 URY 000
BS88/200
200
16000 660
300A
350 FM
350
105000
660
6,6 URZ 000
BS88 Z 350
350
85000 660
400A
550 FMM
550
215000
660
6,6 URZ 000
BS88 Z 550
550
208000 660
500A
700 FMM
700
420000
660
6,6 URZ 000
BS88 Z 700
700
340000 660
600A
2x 450 FMM
450
105000
660
6,6 URZ 2x000
BS88 Z 450
2X450
208000 660
700A
2x 450 FMM
450
105000
660
6,6 URZ 2x000
BS88 Z 700
2X450
208000 660
FERRAZ (200kA @ 660V)
SIBA (300kA @ 600V, 200kA @ 700V)
200A
6,6 URB 000
BS88/315
315
82000
660
20 559 20
315
77000 660
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.
