7.5 Fuses
To protect the installation against electrical and fire hazards, all filters in an installation must be protected against short-
circuiting and overcurrent according to national and international regulations.
To protect both frequency converter and filter, select the type of fuses recommended in the frequency converter
design
guide
. The maximum fuse rating per filter size is listed in
to
.
Filter current rating
Maximum fuse size
Fuses
[A]
[A]
(type)
10
16
gRL 690 V AC
14
35
gRL 690 V AC
22
35
gRL 690 V AC
29
50
gRL 690 V AC
34
50
gRL 690 V AC
40
63
gRL 690 V AC
55
80
gRL 690 V AC
66
125
gRL 690 V AC
82
160
gRL 690 V AC
96
250
gRL 690 V AC
133
250
gRL 690 V AC
171
315
gRL 690 V AC
204
350
gRL 690 V AC
251
400
gRL 690 V AC
304
500
gRL 690 V AC
325
630
gRL 690 V AC
381
630
gRL 690 V AC
480
800
gRL 690 V AC
Table 7.24 380–415 V, 50 Hz and 60 Hz
Filter current rating
Maximum fuse size
Fuses
1)
[A]
[A]
(type)
10
20
Class J, 600 V AC, rated circuit breaker capacity 100 kA
14
35
Class J, 600 V AC, rated circuit breaker capacity 100 kA
19
35
Class J, 600 V AC, rated circuit breaker capacity 100 kA
25
50
Class J, 600 V AC, rated circuit breaker capacity 100 kA
31
50
Class J, 600 V AC, rated circuit breaker capacity 100 kA
36
60
Class J, 600 V AC, rated circuit breaker capacity 100 kA
48
80
Class J, 600 V AC, rated circuit breaker capacity 100 kA
60
125
Class J, 600 V AC, rated circuit breaker capacity 100 kA
73
150
Class J, 600 V AC, rated circuit breaker capacity 100 kA
95
250
Class J, 600 V AC, rated circuit breaker capacity 100 kA
118
250
Class J, 600 V AC, rated circuit breaker capacity 100 kA
154
300
Class J, 600 V AC, rated circuit breaker capacity 100 kA
183
350
Class J, 600 V AC, rated circuit breaker capacity 100 kA
231
400
Class J, 600 V AC, rated circuit breaker capacity 100 kA
291
600
Class J, 600 V AC, rated circuit breaker capacity 100 kA
355
600
Class J, 600 V AC, rated circuit breaker capacity 100 kA
380
600
Class J, 600 V AC, rated circuit breaker capacity 100 kA
436
600
Class J, 600 V AC, rated circuit breaker capacity 100 kA
Table 7.25 440–480 V, 60 Hz
1) Specified type is a UL requirement.
Specifications
Design Guide
MG80C602
Danfoss A/S © 05/2019 All rights reserved.
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Summary of Contents for AHF 010
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