Terms And Abbreviations - ABB ACS800-07-0610-3 Hardware Manual

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Terms and abbreviations

Term/Abbreviation
APBU
DSSB
DSU
Frame (size)
RDCU
THD
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Explanation
Type of optical branching unit used for connecting parallel-
connected converter modules to the RDCU.
Diode Supply System Board
Diode Supply Unit
Relates to the construction type of the component in question. For
example, several drive types with different power ratings may have
the same basic construction, and this term is used in reference to all
those drive types.
With the ACS800-07 (> 500 kW), the frame size of the drive
indicates the quantity and frame size of the supply modules, plus the
quantity and frame size of the inverter modules, e.g. "2×D4 + 4×R8i".
To determine the frame size of a drive type, see the rating tables in
the chapter Technical data.
Drive control unit.
Total Harmonic Distortion