ABB ACS880-107 Series


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 the
modules, which allows more cabling options. For example, it is possible to use a number
of cables that could not otherwise be evenly distributed between the inverter modules.

PE
U2
V2
W2
U2
V2
W2
M
3~
U1
W1
V1
PE
Bridging busbars
Inverter unit cubicle(s)
The recommended cable types are given in chapter Technical data.
WARNING!
The bridging can carry the nominal output of one inverter module. In case of three
parallel modules, ensure that the load capacity of the bridging is not exceeded.
For example, if the cabling connects to the output busbars at one module only,
use the module in the middle.
66 Electrical installation