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Unidrive M702 User Guide 59
Issue Number: 3
4.8 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 4-4.
Table 4-4 Supply fault current used to calculate maximum input currents
Table 4-5 AC Input current and fuse ratings (200 V)
Model Symmetrical fault level (kA)
All 100
Fuses
The AC supply to the drive must be installed with suitable protection against overload and short-circuits. Table 4-5 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
AA AA A A A
03200050
8.2
10.4
15.8
16
25 gG
16
20
CC
or J
03200066
9.9
12.6
20.9
20
20
03200080
14
17
25
25 25
03200106
16
20
34
25
04200137
17
20 30 25 25
gG
25 25
CC
or J
04200185
23
28 41 32 32 30 30
05200250
24
31 52 40 40 gG 40 40
CC
or J
06200330
42
48 64
63 63 gG
60
70
CC
or J
06200440
49
56 85 70
07200610
58
67 109 80 80
gG
80 80
CC
or J
07200750
73
84 135 100 100 100 100
07200830
91
105 149 125 125 125 125
08201160
123
137 213
200 200 gR
200 200
HSJ
08201320
149
166 243 225 225
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