ABB ACS880-107

Connecting the motor cables – Frame size R8i and
multiples without common motor terminal cubicle or sine
output filter
On units without a common motor terminal cubicle or a sine output filter, the motor
cables connect to busbars located behind the inverter module(s). The location and
dimensions of the busbars are shown in the dimension drawings delivered with the
drive and in the example drawings in this manual.
￭
Motor connection diagram (without option +H366)
All parallel-connected inverter modules are to be cabled separately to the motor.
360° grounding must be used at the cable entries.

U2
V2
W2
PE
U2
V2
W2
M
3~
U1
W1
V1
PE
Inverter unit cubicle(s)
The recommended cable types are given in the technical data.
WARNING!
The cabling from all inverter modules to the motor must be physically identical
considering cable type, cross-sectional area, and length.

PE
U2
V2
W2
U2
V2
W2
M
3~
U1
W1
V1
PE
Inverter unit cubicle(s)
￭
Motor connection diagram (with option +H366)
With option +H366, the output busbars of the inverter modules within the same cubicle
are connected by bridging busbars. The bridging balances the motor current between
52 Electrical installation