274 ACQ550-U1 User’s Manual
Technical data
Input power cables/wiring
Input wiring can be any of:
• a four conductor cable (three phases and ground/protective earth). Shielding is
not required.
• four insulated conductors routed through conduit.
Size wiring according to local safety regulations, appropriate input voltage and the
drive’s load current. In any case, the conductor must be less than the maximum limit
defined by the terminal size (see section Drive’s power connection terminals on page
276).
The table below lists copper and aluminium cable types for different load currents.
These recommendations apply only for the conditions listed at the top of the table.
IEC NEC
Based on:
• EN 60204-1 and IEC 60364-5-2/2001
• PVC insulation
• 30 °C (86 °F) ambient temperature
• 70 °C (158 °F) surface temperature
• cables with concentric copper shield
• not more than nine cables laid on cable ladder
side by side.
Based on:
• NEC Table 310-16 for copper wires
• 90 °C (194 °F) wire insulation
• 40 °C (104 °F) ambient temperature
• not more than three current-carrying
conductors in raceway or cable, or earth
(directly buried)
• copper cables with concentric copper shield.
Max. load
current
A
Cu cable
mm
2
Max. load
current
A
Al cable
mm
2
Max. load
current
A
Cu wire size
AWG/kcmil
14 3×1.5 Aluminium cable
cannot be used with
frame sizes R1…R5
because of its lower
capacity.
22.8 14
20 3×2.5
27.3 12
27 3×4 36.4 10
34 3×6 50.1 8
47 3×10
68.3 6
62 3×16 86.5 4
79 3×25 100 3
98 3×35
91 3×50 118 2
119 3×50 117 3×70 137 1
153 3×70
143 3×95 155 1/0
186 3×95
165 3×120 178 2/0
215 3×120 191 3×150 205 3/0
249 3×150
218 3×185 237 4/0
284 3×185
257 3×240 264 250 MCM or 2 × 1
330 3×240 274 3× (3×50) 291 300 MCM or 2 × 1/0
285 2× (3×95) 319 350 MCM or 2 × 2/0
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