Connecting the power cables
￭ Connection diagram
L1 L2 L3
T1/U T2/V T3/W
UDC+
R+R-
L1 L2 L3(PE) (PE)PE
PE
U1
V1
W1
3 ~ M
1
2a
2b
3
5
6
4
3
ACH580-01
7
For alternatives, see section Selecting the main supply disconnecting device (page 87)
1
Use a separate grounding PE cable (2a) or a cable with a separate PE conductor (2b) if the
conductivity of the shield does not meet the requirements for the PE conductor (see Selecting
the power cables (page 96))
2
360-degree grounding is recommended if shielded cable is used. Ground the other end of
the input cable shield or PE conductor at the distribution board.
3
360-degree grounding is required4
External brake resistor5
Use a separate grounding cable if the shield does not meet the requirements of IEC 61439-
1 (see Selecting the power cables (page 96))
6
du/dt or common mode filter (optional), see Common mode, du/dt and sine filters (page 391)
7
Note: If there is a symmetrically constructed grounding conductor on the motor cable in addition
to the conductive shield, connect the grounding conductor to the grounding terminal at the drive
and motor ends.
Do not use an asymmetrically constructed motor cable for motors above 30 kW (see section
General guidelines (page 96)). Connecting its fourth conductor at the motor end increases bearing
currents and causes extra wear.
For a single phase connection, use terminals L1 and L2.
122 Electrical installation – IEC
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