ABB ACS880-107

Inverter unit hardware
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General
An inverter unit contains the components required to control one motor. These include
one or more inverter modules connected in parallel, together with the necessary
auxiliary equipment such as control electronics, fusing, cabling and switchgear.
ACS880-107 inverter units range from 1.5 to 5600 kW in power. ACS880-107 inverter
units employ inverter modules from frame size R1i to R8i. Up to approximately 500 kW,
inverter units consist of one module only; higher powers are achieved by connecting
multiple R8i modules in parallel.
All inverter modules have coated circuit boards as standard.
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Cabinet system
An inverter unit is built into one or more adjoining cubicles and contains the
components that are required to control one motor. At smaller inverter sizes, a single
cubicle can contain several inverter units, each controlling a different motor. Large
inverter units consist of parallel-connected modules and can occupy several cubicles.
Examples of the cabinet configurations are included below as well as in the dimensions
and weights chapter. The motor cabling direction is optionally up or down – see below
under each module frame size for specific information.
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Cooling
Each inverter module has its own cooling fan(s). Control cubicles can have additional
cooling fans.
The inverter cubicles have the air intake at the lower part of the door. The intake can
optionally be through the floor, adding 130 mm (5.12”) to the standard depth of 600
mm (23.62”) of the cabinet.
The cooling air outlets are on the roof of each cubicle. Some configurations have
exhaust fans fitted inside the top compartment of the cubicle. A channeled air outlet
is optional.
Operation principle and hardware description 17