62
Unidrive M Modular Installation Guide
Issue Number: 2
6.6 Ratings
The input current is affected by the supply voltage and impedance.
Typical input current
The values of typical input current are given to aid calculations for power flow and power loss.
The values of typical input current are stated for a balanced supply.
Maximum continuous input current
The values of maximum continuous input current are given to aid the selection of cables and fuses. These values are stated for the worst case
condition with the unusual combination of stiff supply with bad balance. The value stated for the maximum continuous input current would only be
seen in one of the input phases. The current in the other two phases would be significantly lower.
The values of maximum input current are stated for a supply with a 2 % negative phase-sequence imbalance and rated at the supply fault current
given in Table 6-9.
Table 6-9 Supply fault current used to calculate maximum input currents
Table 6-10 Size 10 AC Rectifier current and fuse ratings
Table 6-11 Cable ratings for size 10 Rectifier
Model
Symmetrical fault level (kA)
9A
100
9E / 10E
9D / 10D
Rectifier
Fuses
The AC supply to the drive must be installed with suitable protection against overload and short-circuits. Table 6-10 shows
recommended fuse ratings. Failure to observe this requirement will cause risk of fire.
Model
Typical
input
current
Maximum
continuous
input current
Maximum
overload
input
current
Fuse rating
IEC
UL/USA
Nominal Maximum
Class
Nominal
Maximum
Class
A
A
A
A
A
A
A
10204100
333
361
494
450
450
gR
450
450
HSJ
10404520
370
396
523
450
450
gR
450
450
HSJ
10502430
202
225
313
250
250
gR
250
250
HSJ
10602480
202
225
313
250
250
gR
250
250
HSJ
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
10204100
2 x 150
2 x 150
C
2 x 120
2 x 120
C
2 x 300
2 x 300
2 x 400
2 x 400
10404520
2 x 150
2 x 150
C
2 x 150
2 x 150
C
2 x 350
2 x 350
2 x 500
2 x 500
10502430
2 x 95
2 x 95
B2
2 x 95
2 x 95
B2
2 x 3/0
2 x 3/0
2 x 3/0
2 x 3/0
10602480
2 x 95
2 x 95
B2
2 x 95
2 x 95
B2
2 x 3/0
2 x 3/0
2 x 3/0
2 x 3/0
WARNING
Summary of Contents for 09201760D
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