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40 Cabinet construction
Switching, disconnecting and protecting solution
To arrange the switching, disconnection and protection of the ACS880-304 +A018 module,
you can use the following solution:
1. Equip the drive with a disconnector (main switch-disconnector or a main breaker) [Q1].
(A contactor is not obligatory.) See also
Main circuit breakers
2. The disconnector must separate the whole drive cabinet from the AC power line,
including the AC fuses if they are placed in the drive cabinet.
3. Equip the drive with AC fuses to protect the unit against short circuit. Protect each
input terminal of the supply module with a fuse of its own. For more information, see
AC fuses
on page 191.
See also
Basic electrical safety precautions
page 261.
Auxiliary control cubicle
Place the supply control unit and other control components outside the supply module
cubicle(s). We recommend a separate auxiliary control cubicle in the cabinet line up. There
is an example in section
Main switch-disconnectors
on page 196.
on page
Layout drawing of the supply unit
on page
96
and
Example circuit diagrams
on page 47.
189
and
on
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