ABB ACS880-304 +A018, Hardware Manual

Page: 40 / 280

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 switch-disconnectors on page 189 and
Main circuit breakers on page 196 .
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 on page 96 and Example circuit diagrams on
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
Layout drawing of the supply unit on page 47 .