Protecting The Drive, Input Power Cable, Motor And Motor Cable In Short Circuit Situations And Against Thermal Overload; Protecting The Drive And Input Power Cable In Short-Circuit Situations; Protecting The Motor And Motor Cable In Short-Circuit Situations; Protecting The Drive, Motor Cable And Input Power Cable Against Thermal Overload - ABB ACS355 User Manual

Protecting the drive, input power cable, motor and motor
cable in short circuit situations and against thermal
overload

Protecting the drive and input power cable in short-circuit situations

Arrange the protection according to the following guidelines.
Distribution
board
1)
2)
1)
Size the fuses according to instructions given in chapter
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.
2)
Circuit breakers which have been tested by ABB with the ACS350 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.
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.

Protecting the motor and motor cable in short-circuit situations

The drive protects the motor and motor cable in a short-circuit situation when the
motor cable is dimensioned according to the nominal current of the drive. No
additional protection devices are needed.
Protecting the drive, motor cable and input power cable against
thermal overload
The drive protects itself and the input and motor cables against thermal overload
when the cables are dimensioned according to the nominal current of the drive. No
additional thermal protection devices are needed.
Circuit diagram
Input cable
Planning the electrical installation 43
Drive
M
3~
M
3~
Technical data
Short-circuit protection
Protect the drive and input
cable with fuses or a
circuit breaker. See
footnotes 1) and 2).
on page 357. The