ABB ACS800-04, Hardware Manual

Page: 42 / 118

Planning the electrical installation
42
Protection against short-circuit inside the drive or in the supply cable
Arrange the protection according to the following guide lines.
1) Size the fuses according to instructions given in chapter Technical data. The fuses will protect the input
cable in short-circuit situations, restrict drive damage and prevent damage to adjoining equipment in
case of a short-circuit inside the drive.
Circuit diagram Drive type Short-circuit
protection
DRIVE IS NOT EQUIPPED WITH INPUT FUSES
ACS800-01
ACS800-U1
ACS800-02
ACS800-U2+0C111
ACS800-11
ACS800-U11
ACS800-31
ACS800-U31
ACS800-04
ACS800-U4 Protect the drive and
input cable with fuses
or a circuit breaker.
See footnotes 1) and
2).
DRIVE IS EQUIPPED WITH INPUT FUSES
ACS800-02+C111
ACS800-U2
ACS800-07
ACS800-U7 Protect the input cable
with fuses or a circuit
breaker according to
local regulations. See
footnotes 3) and 4).
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~
M
3~
Distribution
board
Input cable
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~
M
3~
Drive or drive
module
1)
2)
I
>
Drive
Distribution
board
Input cable
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~
M
3~
Drive
~
~
M
3~
3)
4)
4)
I
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