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Electrical Installation
Unidrive M Modular Installation Guide 63
Issue Number: 2
Table 6-12 Cable ratings for size 9 and 10 inverter
The cable sizes noted in Table 6-11 and Table 6-12 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- High Rupturing Capacity – 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
Cable size (IEC) Cable size (UL)
mm
2
AWG or kcmil
Input Output Input Output
Nominal Maximum
Installation
method
Nominal Maximum
Installation
method
Nominal Maximum Nominal Maximum
09201760 2 x 70 2 x 70 B1 2 x 95 2 x 95 B2 2 x 2/0 2 x 2/0 2 x 2/0 2 x 2/0
09202190 2 x 95 2 x 95 B1 2 x 120 2 x 120 B2 2 x 4/0 2 x 4/0 2 x 4/0 2 x 4/0
10202830 2 x 120 2 x 120 B1 2 x 120 2 x 120 C 2 x 300 2 x 300 2 x 250 2 x 250
10203000 2 x 120 2 x 120 C 2 x 120 2 x 120 C 2 x 400 2 x 400 2 x 250 2 x 250
09402000 2 x 70 2 x 70 B1 2 x 95 2 x 95 B2 2 x 4/0 2 x 4/0 2 x 2/0 2 x 2/0
09402240 2 x 95 2 x 95 B1 2 x 120 2 x 120 B2 2 x 250 2 x 250 2 x 4/0 2 x 4/0
10402700 2 x 120 2 x 120 C 2 x 120 2 x 120 B2 2 x 350 2 x 350 2 x 250 2 x 250
10403200 2 x 150 2 x 150 C 2 x 150 2 x 150 B2 2 x 500 2 x 500 2 x 300 2 x 300
09501040 2 x 50 2 x 50 B2 2 x 35 2 x 35 B2 2 x 1/0 2 x 1/0 2 x 3 2 x 3
09501310 2 x 50 2 x 50 B2 2 x 50 2 x 50 B2 2 x 1/0 2 x 1/0 2 x 1 2 x 1
10501520 2 x 70 2 x 70 B2 2 x 70 2 x 70 B2 2 x 2/0 2 x 2/0 2 x 2/0 2 x 2/0
10501900 2 x 95 2 x 95 B2 2 x 70 2 x 70 B2 2 x 3/0 2 x 3/0 2 x 2/0 2 x 2/0
09601040 2 x 50 2 x 50 B2 2 x 35 2 x 35 B2 2 x 1 2 x 1 2 x 3 2 x 3
09601310 2 x 50 2 x 50 B2 2 x 50 2 x 50 B2 2 x 1/0 2 x 1/0 2 x 1 2 x 1
10601500 2 x 70 2 x 70 B2 2 x 70 2 x 70 B2 2 x 2/0 2 x 2/0 2 x 1/0 2 x 1/0
10601780 2 x 95 2 x 95 B2 2 x 70 2 x 70 B2 2 x 3/0 2 x 3/0 2 x 2/0 2 x 2/0
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