ABB DriveIT ACH550-UH - Ground Connections; Drive’s Power Connection Terminals

ACH550-UH User’s Manual 231
Technical Data
Ground Connections
For personnel safety, proper operation and to reduce electromagnetic emission/pick-
up, the drive and the motor must be grounded at the installation site.
• Conductors must be adequately sized as required by safety regulations.
• Power cable shields must be connected to the drive PE terminal in order to meet
safety regulations.
• Power cable shields are suitable for use as equipment grounding conductors only
when the shield conductors are adequately sized as required by safety
regulations.
• In multiple drive installations, do not connect drive terminals in series.
Drive’s Power Connection Terminals
The following table provides specifications for the drive’s power connection
terminals.
249 3x150 237 4/0
284 3x185 264 250 MCM or 2 x 1
291 300 MCM or 2 x 1/0
319 350 MCM or 2 x 2/0
Frame
Size
U1, V1, W1 and U2, V2, W2 Terminals Earthing PE Terminal
Maximum Wire Size Torque Maximum Wire Size Torque
mm
2
AWG Nm lb-ft mm
2
AWG Nm lb-ft
R1 6
81.41.0 4 10 1.4 1.0
R2 10
61.41.0 10 81.41.0
R3 25 31.81.3 16 61.81.3
R4 50
1/0 2.0 1.5 35 22.01.5
R5 70
2/0 15 11.1 70 2/0 15 11.1
R6 185
350 MCM 40 29.5 95 4/0 8 5.9
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)