Connecting The Power Cables - ABB ACS310 User Manual

14 Electrical installation

Connecting the power cables

Connection diagram
For alternatives, see chapter
Planning the electrical
installation, section Selecting
the supply disconnecting
device (disconnecting
means) in ACS310 User's
Manual (3AUA0000044201
[English]).
1)
Ground the other end of the PE conductor at the distribution board.
2)
Use a separate grounding cable if the conductivity of the cable shield is insufficient (smaller
than the conductivity of the phase conductor) and there is no symmetrically constructed
grounding conductor in the cable. See chapter Planning the electrical installation, section
Selecting the power cables in ACS310 User's Manual (3AUA0000044201 [English]).
Note:
Do not use an asymmetrically constructed motor cable.
If there is a symmetrically constructed grounding conductor in the motor cable in addition to
the conductive shield, connect the grounding conductor to the grounding terminal at the drive
and motor ends.
Route the motor cable, input power cable and control cables separately. For more
information, see chapter Planning the electrical installation, section Routing the cables in
ACS310 User's Manual (3AUA0000044201 [English]).
Grounding of the motor cable shield at the motor end
For minimum radio frequency interference:
•
ground the cable by twisting the shield as follows:
flattened width > 1/5 · length
•
or ground the cable shield 360 degrees at the lead-
through of the motor terminal box.
INPUT
PE U1 V1 W1
1)
PE
L1 L2 L3
Drive
OUTPUT
U2 V2 W2
V1
U1 W1
3 ~
Motor
a
2)
b > 1/5 · a
b