ABB RCNA-01 User Manual Page 406

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402 Technical data
ACH550-01 User's Manual
Input power and motor connection terminals
Input power (mains) and motor cable minimum and maximum
sizes (per phase) as well as earthing PE cable maximum sizes
accepted at the cable terminals, and the tightening torques are
listed in the following table.
Frame
size
U1, V1, W1
U2, V2, W2
Earthing PE
Minimum
wire size
Maximum
wire size
Tightening
torque
Maximum
wire size
Tightening
torque
mm
2
AWG mm
2
AWG N·m lbf·ft mm
2
AWG N·m lbf·ft
R1
1
0.75 18 10 8 1.4 1 10 8 1.4 1
R2
1
0.75 18 10 8 1.4 1 10 8 1.4 1
R3
1
2.5 14 25 3 2.5 1.8 16 6 1.8 1.3
R4
1
6 10501/0 5.64 253 2 1.5
R5
1
6 10702/0 1511702/0 1511
R6
2
95
3
3/0
3
240 350 MCM 40 30 95 3/0 8 6
00467918.xls C
1
Aluminium cable cannot be used with frame sizes R1R5 because of its lower
capacity.
2
Aluminium cable cannot be used with type ACH550-01-290A-4 because of the
terminal size.
3
See section Frame size R6 lugs on page 49.
Note: See the recommended cable sizes for different load currents in section Input
power (mains) cable
on page.400.
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