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 ACS310 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)
1)
Size the fuses according to instructions given in chapter
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.


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.
WARNING! If the drive is connected to multiple motors, a separate thermal
overload switch must be used for protecting each cable and motor. These
devices may require a separate fuse to cut off the short-circuit current.


Protecting the motor against thermal overload

According to regulations, the motor must be protected against thermal overload and
the current must be switched off when overload is detected. The drive includes a
motor thermal protection function that protects the motor and switches off the current
when necessary. It is also possible to connect a motor temperature measurement to
the drive. The user can tune both the thermal model and the temperature
measurement function further by parameters.
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Circuit diagram
Input cable
sales@aotewell.com
Planning the electrical installation 41
Drive
M
3~
Technical data
Industry Automation
Short-circuit protection
Protect the drive and input
cable with fuses. See
footnote 1).
on page 335. The
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