146
Unidrive M / Unidrive HS Modular Installation Guide
Issue Number: 5
Table 7-25 DC fuse and cable ratings for Unidrive M / HS size 9, 10 and 11 inverters
The cable sizes noted in Table 7-22 to Table 7-25 are typical cable sizes
based on UL508C and IEC60364-5-52:2001. Maximum cable sizes are
2 x 240 mm
2
or 2 x 400 kcmil per pole. The user will have to decide what
size of cable to use in any given application based on the local wiring
regulations. Use of high temperature cables that are thinner than those
stated in the typical cable chart maybe possible, contact the supplier of
the drive for advice.
Installation method (ref:IEC60364-5-52:2001)
B1 - Separate cables in conduit
B2 - Multicore cable in conduit
C - Multicore cable in free air
N
Cable sizes are from IEC60364-5-52:2001 table A.52.C with correction
factor for 40
°
C ambient of 0.87 (from table A52.14) for cable installation
method B2 (multicore cable in conduit).
Cable size may be reduced if a different installation method is used, or if
the ambient temperature is lower.
N
The recommended cable sizes above are only a guide. The mounting
and grouping of cables affects their current-carrying capacity, in some
cases smaller cables may be acceptable but in other cases a larger
cable is required to avoid excessive temperature or voltage drop. Refer
to local wiring regulations for the correct size of cables.
N
The recommended output cable sizes assume that the motor maximum
current matches that of the drive. Where a motor of reduced rating is
used the cable rating may be chosen to match that of the motor. To
ensure that the motor and cable are protected against over-load, the
drive must be programmed with the correct motor rated current.
A fuse or other protection must be included in all live connections to the
AC supply.
Fuse types
The fuse voltage rating must be suitable for the drive supply voltage.
IEC Fuse types
•
IEC class gG - Full range breaking capability in general application.
Slow acting.
•
IEC class gR - Dual rated: semiconductor protection (ultra-fast
acting) and cable protection.
•
IEC class aR - Semiconductor Protection, fast acting. Provides no
protection from slow, small overloads, so cable must be protected by
using a gG fuse or circuit breaker.
•
HRC-
H
igh
R
upturing
C
apacity – Denotes the ability of the fuse link
to interrupt extremely high fault currents.
North American Fuse Types
•
UL class J - Full range breaking capability in general application.
Slow acting. Up to 600 V only.
Ferraz HSJ -High speed class J fuses. Dual rated: semiconductor
protection (ultra-fast acting) and cable protection. Up to 600 V only and
only from Ferraz.
Model
Maximum
continuous dc
input current
[Arms]
Maximum
overload dc
input current
[Arms]
DC fuse
IEC class
aR
[Arms]
Max fuse clearing
I
2
t at operating
condition
[A
²
s]
DC voltage
rating
Cable Size
DC Input
mm
2
AWG or Kcmil
IEC installation
Method
09201760
220
300
315
330000
415
2 x 70
2 x 2/0
B1
09202190
287
359
350
415
2 x 95
2 x 4/0
B1
10202830
345
488
450
415
2 x 120
2 x 250
B1
10203000
413
578
500
415
2 x 150
2 x 300
C
09402000
261
351
315
330000
830
2 x 70
2 x 3/0
B1
09402240
303
418
400
830
2 x 95
2 x 4/0
B1
10402700
378
517
450
830
2 x 120
2 x 300
C
10403200
456
614
500
830
2 x 150
2 x 350
C
11403770
525
711
630
594000
830
4 x 95
4 x 250
C
11404170
564
753
700
830
4 x 95
4 x 250
C
11404640
621
925
800
830
4 x 120
4 x 300
C
09501040
181
212
250
137000
990
2 x 70
2 x 1
B2
09501310
181
248
250
990
2 x 70
2 x 1
B2
10501520
220
306
315
990
2 x 70
2 x 2/0
B2
10501900
246
360
315
990
2 x 95
2 x 2/0
B2
11502000
299
402
350
330000
990
2 x 70
2 x 4/0
C
11502540
353
485
450
990
2 x 95
2 x 250
C
11502850
387
583
500
990
2 x 120
2 x 300
C
09601040
158
211
200
137000
1190
2 x 50
2 x 1
B2
09601310
183
252
250
1190
2 x 70
2 x 1/0
B2
10601500
223
303
315
1190
2 x 70
2 x 2/0
B2
10601780
252
359
315
1190
2 x 95
2 x 3/0
B2
11602100
282
466
400
330000
1190
2 x 70
2 x 4/0
C
11602380
332
522
450
1190
2 x 95
2 x 250
C
11602630
371
573
500
1190
2 x 120
2 x 300
C
NOTE
NOTE
NOTE
NOTE
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