46 Planning the electrical installation
Protection against short circuits in the drive or supply cable
Protect the drive and input cable with fuses or a circuit breaker.
Fuses
Size the fuses according to instructions given in chapter
Technical data
(page 105)
.
The fuses 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 breakers which have been tested by ABB with the ACS800 can be used.
Fuses must be used with other circuit breakers. Contact your local ABB
representative for the approved breaker types and supply network characteristics.
Circuit breaker
The protective characteristics of circuit breakers depend on the type, construction
and settings of the breakers. There are also limitations pertaining to the short-
circuit capacity of the supply network.
WARNING! Due to the inherent operating principle and construction of
circuit breakers, independent of the manufacturer, hot ionized gases may
escape from the breaker enclosure in case of a short circuit. To ensure safe
use, special attention must be paid to the installation and placement of the
breakers. Follow the manufacturer’s instructions.
WARNING! In the USA, do not use circuit breakers without fuses.
Circuit diagram
DRIVE IS NOT EQUIPPED WITH INPUT FUSES
~
~
M
3~
Distribution
board
Input cable
~
~
M
3~
Drive or drive
module
I >
Circuit
breaker
Fuses
To Next Page
Loading...
Need help?
General
